---
# System prepended metadata

title: 'Group 10 : Improving teleworkers'' experience while traveling thanks to low-tech'
tags: [2018_MAKRAC template]

---

---
tags: 2018_MAKRAC template
---




# Group 10 : Improving teleworkers' experience while traveling thanks to low-tech
 

## FIX OUR FUTURE WITH DIGITAL FABRICATION


##### Group "10"
##### Tutor "Tom Hebrard"
###### Participants : Emeline KLEINMANN-DUKIC, Nicolas RAMOFF, Syeada ASIMA
***
## Welcome to your HackMD note !


:::success
**This document is a logbook that will help you lead your project.**

Use it as a collaborative tool to work as a team on your project, you can work on it together and at the same time : **take the time to complete it regularly and accurately.**

You have **at least** to complete all **yellow fields** like this one:
:::warning
...
:::

:::danger
This document will allow you to share your work with your tutors and will be the basis for **evaluating your work.**
:::

:::danger
**All *lorem ipsum* text must be replaced by your own content!**
:::

If you don't know how to write a markdown note here is a [documentation](https://hackmd.io/features#Introduction) and a [tutorial](https://www.markdowntutorial.com/) to learn the Markdown syntax.

To edit this document you can choose between **edit mode, view mode or split display mode**, by clicking on these icons at the top of the screen :
![](https://i.imgur.com/psakTJa.png)

:::info
📸 We will ask you to add a lot of **images** in this document, don't panic, [it's very simple](https://hackmd.io/s/features#Image-Upload): 

- You can upload an image simply by clicking on the picture button in the toolbar
- Alternatively, you can **drag-n-drop** an image into the editor. 
- Even **pasting images** is possible!
:::

***
# P1. Prototype!
:::info
The goal of this phase is to define & materialize 3 relevant product proposals according to the subject given.
:::

:::danger
Your prototype must be a physical object : diagrams, images, drawings and 3D files etc. will not be considered as prototypes.
:::

### Ressources

Here is a short list of useful websites and softwares for prototyping things.

:::success
- [instructables.com](https://www.instructables.com/): A great website with tutorials for (almost) everything
- [makezine.com](https://makezine.com/projects/): A well known magazine with tons of cool projects
- [thingiverse.com](https://www.thingiverse.com/) The world's largest 3D printing commmunity, with loads of projects
- [hackaday.com](https://hackaday.com/): If you are a bit hacker or want to become one, this site is for you!
- [wikifab.org](https://wikifab.org/wiki/Accueil): Just like instructables, but *en français*
- [Slicer](https://apps.autodesk.com/FUSION/en/Detail/Index?id=8699194120463301363&os=Win64&appLang=en) : A software to convert 3D models (.stl files) into laser-cutted slices, a great tool to build cardboard objects. 
- [Make a box](https://makeabox.io/) : A website to create boxes that can be laser cutted
- [Makercase](http://www.makercase.com/) : Another laser cutted boxes website
- [templatemaker.nl](https://www.templatemaker.nl/) : To create quiclky paper objects.
- [Sculptris](http://pixologic.com/sculptris/) : A 3D sculpting tool, a fun way to create 3D models for 3D printing or laser cutting.
- ...
:::

## Define & prototype 3 proposals

### Proposal n°1 : LED Travel Communicator

##### Actors
:::warning
- FOR WHOM? Describe who is your target, what are their values and principles
*For teleworkers who would like to communicate for basic necessities where Google translate isn’t functional or they do not have access to internet or their electrical devices are out of charge.*
 *Values and principles : adventure, open-minded, curiosity, inclusion, discover*
-  BY WHO? Describe who you are
 	*A team passionate about low-techs and travel that will facilitate your life abroad*
- WITH WHOM? Describe the others actors or communitues involved, or whom you would like to involve and how to weave them in.
	*Partnerships with companies : our object can be include in a kit offered to teleworkers
Partnerships with travel influencers : will prove in live the use of our object*

:::

##### Context 
:::warning
- WHY? Tell what you want to change and what are your goals. Describe what you will consider as a success
	*When you experience teleworking while traveling, you will need some tools as a Sim card, a plug, a place to crash, … But sometimes, because of the language barrier you don’t benefit from the freedom that you’d like because you don’t think that in remote places such as small islands you will find a way to explain what you need to work. Some dialects are not referenced in Google Translate. This small object will take away your fear to not be able of working because local people can’t understand what you need.*
- WHEN? Define the key moments and the periodicity
 *We hope that our product can be used for people who would like to communicate for basic necessities when they do not have access to the internet or their electrical devices are out of charge. Sometimes some people would like to change their scenery and go to remote places to work from it might happen that they do not know how to communicate with locals. Through this device,they can  communicate to access basic needs (food, shelter, directions). We hope that they can use this product whenever they need/want.*
- WHERE? Identify and describe the spaces and how they are used
*We hope our products can be used by anyone travelling to places where they do not know the local language to communicate and receive assistance through the use of simple pictures that would be displayed on a screen through a simple command. Nowadays a lot of teleworkers go to  remote places where not a particular common language is used but certaain dialects of languages like : remotes Islands, countryside of some countries : in Tanzania for instance. Having access to pictures to communicate would be useful.*
:::


##### Features
:::warning
- WHAT? Describe what concrete offering will result
 	*The user would be able to communicate basic ideas/needs thanks to enlightened pictograms.*
- HOW? Define the key actions, clarify the give/get relationships and how the actors connects.
 	*A teleworker is at a remote location and does not understand the local language and also and has no access to internet and there is no charge in their phone/tablets etc. To solve this communication problem, he/she can use our product and sovle their problem by following the steps provided below:
•	1) The teleworker types out the word they need on the search bar
•	2) The screen shows up the icon
•	3) He/she then can show the icon to the person they are trying to communicate to*

:::

##### Usage scenario

Describe use cases  
How will users access your service? 
*Our product will be sold  in traveling shops and offered to teleworkers by companies. It is a sustainable tool so they can keep it during all their travel. 
Since it would be a portable device, depending on what we come up with as a team, we might sell them through shops or through online platforms.*

Describe quickly the usage scenario, and add a drawing for each steps :

:::warning
**Linda, a businesswoman from the US is in Kunming, China and she is teleworking while she is travelling. As she was walking around the city,her phone shows a notification for a scheduled group meeting but she does not know where she can get WiFi,therefore she goes to the nearest store:**
![Girl remembers a meeting](https://i.imgur.com/EsZH82A.jpg)

:::


:::warning
**Linda goes in the store and looks for someone to ask where she can find a place with WiFi to work at.But no one understands her and her phone does not have enough data to go use for group call over the internet.  :**
![Girl looking around the street for places with WiFi](https://i.imgur.com/7v0MjXH.jpg)

:::

:::warning
**Linda therefore takes out the LED Translator and types in the word 'WiFi', the WiFi icon is shown the screen and she shows it to the shopkeeper.The shopkeeper recognizes the icon and points to a near by restaurant and he tells his neighbour about Linda wanting to use the internet.:**
![Shopkeeper helps girl](https://i.imgur.com/7qjL8DI.jpg)

:::


:::warning
**Action 3:Linda thanks the shopkeeper and goes to the retaurant which he pointed to. Linda arrives and shows the screen with the 'WiFi' icon, the staff recognizes the icon and shares the WiFi password with her.When Linda is done using the device, she turns the device off and thanks the server**
![Girl gets Wifi at the restaurant](https://i.imgur.com/PakeXGE.jpg)

:::

:::warning
**Linda was able to have access to WiFi and get her work done even when she did not speak the local language**
![Girl can join the online meeting using wifi](https://i.imgur.com/U1qQ34q.jpg)

:::


##### Benchmark

List concurrents and relative projects and describe how they relate or differentiate to your project
:::warning
*   Hiroglif - The Ultimate Travel Communication Tool : same idea with an app but how can you do if you don’t have anymore battery on your phone ? Not specialised in work communication
*   Google Translate, Linguee, other translation tools, apps or websites : only work with Internet, not designed for dialects of the world
*  We are expecting existing tutorials that can help you to materialize your proposal. You can search on youtube.com, instructables.com, thingiverse.com, etc.

There are different types of softwares and devices available, but ours would be different as it would be low-tech and easy to use.








:::

##### Ressources

We are expecting existing tutorials that can help you to materialize your proposal. You can search on youtube.com, instructables.com, thingiverse.com, etc.
:::warning
*  [LCD (Liquid Crystal Display) © GPL3+](https://create.arduino.cc/projecthub/microBob/lcd-liquid-crystal-display-e72c74?ref=platform&ref_id=424_trending___&offset=106)
  This video could be used as guide on how we can link LED screen to Arduino for our project and display texts.
*   [MULTIPLE PUSH BUTTONS ON ONE ARDUINO INPUT](https://www.the-diy-life.com/multiple-push-buttons-on-one-arduino-input/)
This video can help us connect multiple push buttons to arduino board

:::

***

##### Prototype description
:::danger
Your prototype must be **a physical object** : images, drawings, diagrams and 3D files will not be considered as prototypes.
:::

Describe here the materials and tools you've used to build your prototype. 
You can use rough materials, such as paper, cardboard, clay, lego or repurpose existing objects.
:::warning
- Paper cardboard
- Plastic carton
- Scotch tape
- Scissor
- Pen
- Pencil
- Eraser
:::



##### Prototype pictures
Insert at least one main picture and two detail pictures of your prototype.
:warning: <span style="color:red">**Drawings, illustrations and other images are not allowed.**</span>
:::warning

Drag-n-drop 3 pictures below :


![Prototype of LED Language Communicator device face side](https://i.imgur.com/pxFSE7F.jpg)
![Side picture of the prototype ](https://i.imgur.com/4RA1yjN.jpg)
![Picture of the prototype closed](https://i.imgur.com/gdSY8TZ.jpg)



:::

##### Prototype video
Use your smartphone to make a short video (30s) showing your prototype in use, and post it on the Slack channel of your group.

* * *

### Proposal n°2 : A portable working space that blocks outside noise
##### Actors
:::warning
- **FOR WHOM?** For teleworkers are regularly solicitated for calls or visio-conferences and want to travel cheap at the same time, in places that can be crowded (hostels) or windy. Their values and principles are adventure, dynamism, trustable workers
- **BY WHO?** A team passionate about low-techs and travel that will facilitate your life abroad
- **WITH WHOM?** We want to establish three kinds of partnerships:  
Partnerships with companies : our object can be include in a kit offered to teleworkers
Partnerships with travel influencers : will prove in live the use of our object
Partnerships with hostels and tourist companies abroad : they can sell our product to teleworkers

:::

##### Context 
:::warning
- **WHY? Tell what you want to change and what are your goals. Describe what you will consider as a success**
Because it’s not always simple to find a quiet space when you are traveling for not much money, because sometimes you didn’t plan to work but you are on a windy expedition and an important client is calling you.
- **WHEN? Define the key moments and the periodicity**
Moments of your life when you are tired with your routine and you want more adventure but you still have to work. In those times, our tool can help you almost everyday when ever you recieve a phone call.
- **WHERE? Identify and describe the spaces and how they are used**
Our product can be used at public places such as at airports, or in other crowded/noisy  places like hostels or in windy places.
:::


##### Features
:::warning
- **WHAT? Describe what concrete offering will result**
A portable working space that will provide a peaceful working place thanks to isolation 
- **HOW? Define the key actions, clarify the give/get relationships and how the actors connects.**
1) Someone from work is calling you
2) Deploy your working space that fits in your backpack in 2 seconds
3) Pursue the call in a peaceful place 

:::

##### Usage scenario

Describe use cases  
How will users access your service? 

Describe quickly the usage scenario, and add a drawing for each steps :

:::warning
**Initial context:**
![](https://i.imgur.com/um9xPYC.jpg)

*Salomé has decided to telework while she travels. This month, she is located in Rhajastan. She is about to take a 3-days trip in the Thar desert. Even if it's really windy and there is no infrastructure, she doesn't care because she takes our portable working space with her*
:::

:::warning
**Action 1:**
![](https://i.imgur.com/4t0Jm9H.jpg)

*During her expedition, Salomé gets a call of her boss, she tells her that she will call back in a minute. *
:::

:::warning
**Action 2:**
![](https://i.imgur.com/Qen942j.jpg)

*Salome takes the deployable working space out of her backpack, deploys it and prepare it to recieve the call*
:::

:::warning
**Resolving situation:**
![](https://i.imgur.com/6Y7Xmdr.jpg)

*Salomé takes place and put the light on in her portable working place, she is super happy to call her boss away from the noise of the wind.*
:::

##### Benchmark

List concurrents and relative projects and describe how they relate or differentiate to your project
:::warning
*   WindBlocker : a tool used in your earphones or phone to block external noises in particular wind noises. WindBlocker do not enable to work in a corporate space for visio conferences : http://www.windblocker.com/
*   Working spaces implemented abroad : in some countries there are coffee shops or hostels where you can call in peace. But there are not available everywhere or right away : you have to plan your call
*   Tents : in a way, tents are also a competitor but sometimes they do not block strong noises. We can use their technology to improve it.
*   Underweatherpods : https://undertheweatherpods.com/
:::

##### Ressources

We are expecting existing tutorials that can help you to materialize your proposal. You can search on youtube.com, instructables.com, thingiverse.com, etc.
:::warning
*   2sec deployable tents, https://www.dailymotion.com/video/xdhgkn, we can inspire ourself for the deployable technology
*   Pop-up tent, https://www.youtube.com/watch?v=BFV59O24h08, our working space could look like this
*   ...
:::

***

##### Prototype description
:::danger
Your prototype must be **a physical object** : images, drawings, diagrams and 3D files will not be considered as prototypes.
:::

Describe here the materials and tools you've used to build your prototype. 
You can use rough materials, such as paper, cardboard, clay, lego or repurpose existing objects.
:::warning
- cardboard
- little LED
- scissors
:::



##### Prototype pictures

Insert at least one main picture and two detail pictures of your prototype.
:warning: <span style="color:red">**Drawings, illustrations and other images are not allowed.**</span>
:::warning

Drag-n-drop 3 pictures below :
![](https://i.imgur.com/ZNG6inv.jpg) ![](https://i.imgur.com/0Ql7ZjG.jpg) ![](https://i.imgur.com/R1hLLwB.jpg)



:::

##### Prototype video
Use your smartphone to make a short video (30s) showing your prototype in use, and post it on the Slack channel of your group.

***


### Proposal n°2 : A portable battery for electronic devices powered by solar or mechanical energy 

##### Actors
:::warning
- FOR WHOM? 
Our target is teleworkers who have no access to a source of electric power but need to charge small electronic devices
- BY WHO? Describe who you are A team passionate about low-techs and travel that will facilitate your life abroad
- WITH WHOM? 
Could make partnership with solar panel producers.
With hostels, to sell them to people going in the outback.

:::

##### Context 
:::warning
- WHY? 
Want it to be easier to charge devices anywhere.
Also want people to be less reliant on power sources.
Promote reusable energy.
A success is if people use our product and it allows them to work away from their office, while promoting a more responsible consumption of electricity.
- WHEN? Define the key moments and the periodicity
Periodicity is any moment of the day when you are in a remote location.
Or also any moment of the day when you choose to use renewable energy instead of electric power.
- WHERE? Identify and describe the spaces and how they are used
Used anywhere in the world. Most useful in very remote places, or simply away from power sources.
:::


##### Features
:::warning
- WHAT? Describe what concrete offering will result
Provide power for small electronic devices (smartphone, camera, kindle…)
- HOW? Define the key actions, clarify the give/get relationships and how the actors connects.
Charge the battery by exposing it to sunlight or by manually turning its handle repetitively. Plug in your electronic device.
:::

##### Usage scenario

Describe use cases  
How will users access your service? 

Describe quickly the usage scenario, and add a drawing for each steps :

:::warning
**Initial context:**
(insert drawing here)![](https://i.imgur.com/gEO6vMN.jpg)


*User is in an environment with nowhere to charge her electronic device but needs it charged anyways*
:::

:::warning
**Action 1:**
(insert drawing here)![](https://i.imgur.com/7ZLEDMb.jpg)

*She pulls out her portable charger and puts it in the sunlight.
After a little while, the charger is ready to work.
*
:::

:::warning
**Action 1A:**
![](https://i.imgur.com/8Vq4HKt.jpg)

*Alternatively, if it is dark outside, she can use the crank to power up the charger manually.  *
:::

:::warning
**Action 2:**
![](https://i.imgur.com/8BsFx8G.jpg)

*She plugs her phone into the charger, which charges up the phone’s battery *
:::

:::warning
**Resolving situation:**
![](https://i.imgur.com/LV4btv0.jpg)

*The user’s phone or other device is now charged! No energy from a non-renewable source has been used.*
:::

##### Benchmark

List concurrents and relative projects and describe how they relate or differentiate to your project
:::warning
There already are a variety of portable batteries available on the market.
There also are a lot of solar powered portable chargers available. They are so plentiful that listing them would be pointless.

Similarly, there are quite a few hand crank portable chargers.
However, there are less products that offer both ways of charging them. One of them, by Aytech Solutions, is available on Amazon https://www.amazon.com/Charger-Hand-Crank-Portable-Flashlight-Waterproof/dp/B07L69PL83

*   ...
:::

##### Ressources

We are expecting existing tutorials that can help you to materialize your proposal. You can search on youtube.com, instructables.com, thingiverse.com, etc.
:::warning
Tutorial to build your own solar panel
https://www.youtube.com/watch?v=6_3gK83bePQ

Making a battery from used cells (if we decide to go that way)
https://www.youtube.com/watch?v=TY7FwffZ5vc

DIY from Low-Tech Lab : https://wiki.lowtechlab.org/wiki/Lampe_solaire_%C3%A0_batteries_lithium_r%C3%A9cup%C3%A9r%C3%A9es

:::

* * *

##### Prototype description
:::danger
Your prototype must be **a physical object** : images, drawings, diagrams and 3D files will not be considered as prototypes.
:::

Describe here the materials and tools you've used to build your prototype. 
You can use rough materials, such as paper, cardboard, clay, lego or repurpose existing objects.
:::warning
- Wood
- Laser cutter
- Paper
- Pen
- Scotch tape
- Cardboard

:::



##### Prototype pictures

Insert at least one main picture and two detail pictures of your prototype.
:warning: <span style="color:red">**Drawings, illustrations and other images are not allowed.**</span>
:::warning

Drag-n-drop 3 pictures below :

![](https://i.imgur.com/fsn4V8I.jpg)
 ![](https://i.imgur.com/hcRsuvF.jpg)
 ![](https://i.imgur.com/XFuQ7yk.jpg)

:::

##### Prototype video
Use your smartphone to make a short video (30s) showing your prototype in use, and post it on the Slack channel of your group.

* * *

### Choose the most promising proposal
Compare the three proposals and select the one you think is the most relevant with regard to these 4 criterias:

- Is this proposal relevant to the course theme? (Fix our future with digital fabrication)
- Is this proposal relevant to the group's subject?
- Can I materialize this proposal on a scale of 1:1 at the makers' lab?
- Does my proposal respond to a real need?

At the next meeting you will argue your choice with your tutor, she / he will choose the proposal you will develop in the next phases.

:::warning
**GreenCharge : the low-tech portable charging suitcase**
:::

:::warning
**Describe below why you selected this project:**
(insert drawing here)
*We decided to give up the idea of the deployable working space because the need is less strong than for battery and the need of translation. We highly hesitated between the translation object and the low-tech charger because in both cases we will have to make a tutorial and a documentation of a simple stuff. W>e thought that low-tech was more represented in the charger because when it comes to pictograms, the most low-tech object already exists : it's a book !*
:::

* * *

### Define your dream product

You and your tutor have chosen the best proposal, before testing it with users you need to refine this proposal.

:::warning
- What is the purpose of your product? 
*The Greencharger aims at recharging electronical devices while traveling in a sustainable way.*
:::

:::warning
- What problem do you want to solve with it?
*When you telework while traveling you often have to do the choice between adventure and work as you can't go in places that are too much remote. Indeed, you can't take the risk to not being able to charge your working devices. Thanks to Greencharge, you will be able to charge your device anywhere in a sustainable way so that you won't have to do this choice anymore and be frustrated in your journey.*
:::


:::warning
- What features your product will have to achieve this objective? Rank the features in order of importance
    - battery 
    - solar pannels
    - manual charging mode
    - working tools
    - storing place
    
:::

* * *

### Make a more testable version of your prototype

Make a more testable version of your first prototype.

:::danger
Keep the first version of your prototype as is and make a brand new one.
:::


Insert at least one main picture and two detail pictures of your prototype.
:warning: <span style="color:red">**Drawings, illustrations and other images are not allowed.**</span>
:::warning

Drag-n-drop 3 pictures below :

![](https://i.imgur.com/WBvzHQJ.jpg)


 ![](https://i.imgur.com/h8PJczs.jpg)
 
 
![](https://i.imgur.com/OkuUCzX.jpg)

:::


* * *

# P2. Test!
:::info
The goal of this phase is to improve your prototype using end-users feedback.
:::
:::danger
**Negative user feedback doesn't means your proposal is bad** : do not give up and analyse what are the pain points to solve in a new version.
:::
## Test and iterate your proposal

### 1. Test protocol

Write below your test ptotocol :

:::warning
**Write here the ideal user profile (persona):**
*The ideal user profile is someone that is teleworking and traveling in the same time. It is also someone who is concerned about the future of our planet and is attracted by green techs. It's also someone who dreams to discover more places, more remote, but that is scared not being able to charge his working devices if he or she goes to an advenure. This is this profile that we are looking for to test our product.*
:::

:::warning
**Write here the goal of your test:**
*The goal of the test is :*
1) to validate the need : we want to make sure that the need exists by asking a series of question before speaking about our product and before showing our prototype
2) to improve the idea : we want to shortly introduce our project so that the ideal user could quickly brainstorm about what features he would like in such a product. We will do that before showing the prototype so that he won't be influenced by it
3) to improve the user experience : by showing him the prototype and ask him how he would use it
4) to improve the design : as it is an object made for travelers this is important
5) to test our features : we want to analyze if they are at the right place, if they are releavant, etc ...
:::

:::warning
**Describe here the main feature you want to test:**
- the global aspect : does the idea of a suitcase is relevant 
 - the manual charging mode 
 - the solar panels
 - the adequation between our product and the tools used by teleworkers while they travel
:::

:::warning
**Tell who will be conducting the tests (at least two persons per test):**
*Syeada, Emeline and Nicolas will conduct the tests, each one of them interviewing two different ideal users. In deed, each user will be interviewed twice by two different persons.*
:::

:::warning
**List and clearly describe all the actions that the user will have to perform to test your product according to your usage scenario:**

- open the suitcase
- put your device on charge
- charge your device manually
- charge your device thanks to solar energy
- write some notes during a call while your phone is charging
:::

:::warning
**Full test questions and protocol :**

***I - Validating the need***
1. Have you already been in a situation while traveling where you can’t charge your working devices (no plugs, no power, not the good convertor, …).
1. Are you sensitive to sustainable development ? 
1. Are you using portable chargers while you travel ?

***II - Presentation and test of our project*** 
We decided to create GreenCharge, a low-tech portable charging suitcase. It will enables you to keep working even when you go on adventures in remote places where there is no power. Unlike portable chargers, it’s a low tech device, less harmful for our planet ! Moreover, it’s not only an electronc device, it’s a work experience thanks to its features.
1. What features will you expect in such a project ?
2. How would you imagine it ?

***III - Test of our prototype***
We show the video of our prototype and test the user
1. Is something unclear to you ?
1. Can you explain to us how it works ?
1. Will you be able to open the suitcase ?
1. Will you be able to charge your phone ?
1. Will you be able to charge your phone manually ?
1. Will you be able to charge your phone thanks to solar panels ?
1. Will you be able to take some notes while you charge it ?
1. What do you think of the design ?
1. How would you improve this prototype ?
:::

---
### 2. First test

#### User 1

:::warning
- Name : Marion
- Age : 28
- Occupation : Designer
- Phone number : +33 7 87 14 76 65
- Context of the meeting (where, with who, etc.) Online on Zoom with Nico
- Duration of the meeting 30min
:::
##### User feedback

:::warning
Note here at least 3 issues raised by the user:
- Too large
- Ugly
- User already posesses a similar product that she prefers
:::

:::warning
Note positive, neutral and negative feedback
Positive : environmental consciousness is a good aspect. Should explore that. Target consumers sensitive to it.
Neutra: NA
Negative: Looks very bad, would never carry a bag with a massive solar panel on it. Cannot replace a traditional travel bag, except a traveler can't afford to carry extra weight so would not take a second bag with her. 

Note here other comments about your meeting with the user
Overall didn't like the idea much.
:::
:::warning
Note here features that needs to be improved/removed/added
Size/weight. Style

:::

***
#### User 2
:::warning
- Name : Gregoire
- Age : 24
- Occupation : Student
- Phone number: +33 7 83 84 99 54
- Context of the meeting (where, with who, etc.):remotely via WhatsApp call with Syeada
- Duration of the meeting: 9 minutes
:::
##### User feedback

:::warning
Note here at least 3 issues raised by the user:
- issue 1
*Durability*
- issue 2
*Weight*
- issue 3
*Size and design*
:::

:::warning
Note positive, neutral and negative feedback
| Positive | Neutral  | Negative |
| -----| --------| --------|
| It would be useful at remote areas and it is using green energy | The user said he would not use it for business travel as he would have easy access to power outlet and usb ports at different places, but might use it while travelling for leisure| The size and weight of the device is not travel friendly|
:::
:::warning
Note here other comments about your meeting with the user
:::
:::warning
The device has to be durable,light and small so that it is travel friendly. 
:::

***
#### User 3
:::warning
- Name : Isolde
- Age : 25
- Occupation : Teleworker for a media
- Phone number : +33 7 69 32 27 05
- Context of the meeting (where, with who, etc.) Tuesday night on messenger video with Emeline
- Duration of the meeting : approx 30'
:::
##### User feedback

:::warning
Note here at least 3 issues raised by the user:
- issue 1 : It's not a good idea to have an additional bag while traveling
- issue 2 : I need to charge my laptop
- issue 3 : I don't need a pen and sheets to take note
:::

:::warning
Note positive, neutral and negative feedback
| Positive | Neutral  | Negative |
| --------| --------| --------|
|It's cool to have a low-tech device !||I don't think it's enough powerful to charge my computer. I don't want to carry an additional bag|
:::
:::warning
Note here other comments about your meeting with the user
:::
:::warning
A lithium battery must be added to be able to charge a computer even if it's less fast than usualy. The idea of the bag has to be rethinked. 
:::

***
### 3. Improve your prototype
Insert below **at least 3 pictures** of your iteration showing your proposal evolution.
:warning: <span style="color:red">**Drawings, illustrations and other images are not allowed.**</span>

:::warning



 ![](https://i.imgur.com/HlUP1h8.jpg)
 
![](https://i.imgur.com/sIUgNhx.jpg)![Uploading file..._zffjaxs7w]()

 
:::
:::warning
Describe the evolution of the prototype:

Prototype is now a small box. Still a solar powered battery, now has a small storage space inside. 
Top side: solar panel and company's logo/name. 
Right side: various ports (USB). 
Inside: two areas. On the left - recycled batteries (from old computers). On the right, storage space with separated compartments. For phone adapters, earphones, keys, coins, pens...
:::

##### Prototype video
Use your smartphone to make a short video (30s) showing your improved prototype in situation of use, and post it on the Slack channel of your group.
***

### 4. Second test
#### User 1

:::warning
- Name: Marion
- Age : 25
- Occupation: Designer
- Phone number :  +33 7 87 14 76 65
- Context of the meeting (where, with who, etc.): Zoom with Syeada
- Duration of the meeting: 12 minutes
:::
##### User feedback

:::warning
Note here at least 3 issues raised by the user:
- Features: What more than just a power bank? 
  *We have to think about the extra value i.e what makes it different*
- Capacity: Can it charge more than a small device?
*She said as most teleworkers mainly use their phones and laptops while working, the biggest thing would be to focus on the ability to charge laptops which would give it an advantage as phones can be recharged through other power banks.*
           


:::

:::warning
Note positive, neutral and negative feedback
| Positive | Neutral  | Negative |
| --------| --------| --------|
| She said its better than the idea of a bag| - | - |
:::
:::warning
Note here other comments about your meeting with the user
:::
:::warning
Note here features that needs to be improved/removed/added:
 - Weight and size has to be minimum to be travel friendly. Design could be improved in terms of the materials used.
 - Charging capacity should be high enough to charge laptops to seem attractive to potential buyers
 
:::

***
#### User 2
:::warning
- Name : Grégoire
- Age : 23
- Occupation : student but former teleworker
- Phone number : +33 7 83 84 99 54
- Context of the meeting (where, with who, etc.) : Whatsapp video on Thursday night with Emeline 
- Duration of the meeting Approx 15'
:::
##### User feedback

:::warning
Note here at least 3 issues raised by the user:
- issue 1 : Where is the manual tool
- issue 2 : I don't want to carry it can I attach it to my bagpack
- issue 3 : I need to charge my laptop
:::

:::warning
Note positive, neutral and negative feedback
| Positive | Neutral  | Negative |
| --------| --------| --------|
|It's much better than the other prototype : the other was more like a gadget, this one seems serious|I don't see the manual tool. I would like to attach it to my bagpack while I walk to attract the sunlights without carrying it. |It's still unclear for me if it will be possible to charge my laptop.|
:::
:::warning
The user is still not really convinced about the product but thinks that with smaller changes it would be much better.
:::
:::warning
* Create a way to attach the charger to the backpack
* Add the manual tool
* It needs to be more efficient for laptops
:::

***
#### User 3
:::warning
- Name : Isolde
- Age : 25
- Occupation : Teleworker for a media
- Phone number : +33 7 69 32 27 05
- Context of the meeting (where, with who, etc.) Thursday afternoon on whatsapp with Nico.
- Duration of the meeting : approx 30'
:::
##### User feedback

:::warning
Note here at least 3 issues raised by the user:
- issue 1 : What if it rains or I fall and I break my solar pannels
- issue 2 : I need to charge also my computer
- issue 3 : Where is the manual tool 
:::

:::warning
Note positive, neutral and negative feedback
| Positive | Neutral  | Negative |
| --------| --------| --------|
|The storing place is nice and the design is much nicer|It would be nice to remove the solar pannel|I don't think it's enough powerful to charge my computer|
:::
:::warning
Note here other comments about your meeting with the user
Isolde seemed surprised in a good way of the new design, this prototype met much more her expectations.
:::
:::warning
Note here features that needs to be improved/removed/added:
* Make the solar pannels removable
* Make the device more efficient : for computers too
* Make it more easy to carry
* Add the manual tool
:::
### 5. Improve your prototype
Insert below **at least 3 pictures** of your iteration showing your proposal evolution.
:warning: <span style="color:red">**Drawings, illustrations and other images are not allowed.**</span>

:::warning


![](https://i.imgur.com/4hmEJ3V.jpg)

![](https://i.imgur.com/2OviwN4.jpg)

![](https://i.imgur.com/WeXBcWp.jpg)

 
:::
:::warning
Describe the evolution of the prototype:

Prototype is now a smaller box. Still a solar powered battery but improved with a lithium battery, still has a small storage space inside, now the sollar pannel is foldable, you can charge the device also manually to go faster and it comes with different types of cables
Top side: solar panel and company's logo/name, whole to insert the manual tool to charge faster 
Front side : Open to charge your devices 
Inside: two areas. On the left - recycled batteries (from old computers). On the right, storage space with separated compartments. For phone adapters, earphones, keys, coins, pens...
:::
##### Prototype video
Use your smartphone to make a short video (30s) showing your improved prototype in situation of use, and post it on the Slack channel of your group.

# P3. Design
## Make your final prototype
:::info
Now that you have defined what is your best proposal it's time to make a greater version of it. You will present it to the jury during the final evaluation alongside the early prototypes made in the previous phase.
:::
:::success
A good prototype is self-explainatory : the user must be able to understand how it works without instructions or user manual. It must be fully functional and sufficiently strong to withstand several demonstrations in real conditions of use.
:::
:::danger
For this phase it is **mandatory** to use at least :
- **Tinkercad** to design in 3D your product
- **Tinkercad Circuits** to design the electronics
- **Adobe XD** to make your prototype interactive.
:::

___
### Roadmap and roles 

#### Roadmap
:::warning
**Here are our steps for this phase :**
1. Get information from solar panel engineer guy : battery and mechanical charger : gearbox, enough energy
1. Look at all the different ways to get 12V and 5V available, information on gearbox and space
1. Improve the prototype following the interview
1. Start the production : this step will be devided in 3 parts :
*  3D Designing 
*  2D Designing
*  Electronic system
:::

:::info
For the production part, it is important to make a list of all the material and tools that we need. 
:::
#### Roles attribution 
:::warning
**Who is going to do what ? :**
* Nicolas will be in charge of designing 3D objects : a system to attach the charger to the backpack to catch the sunlights without moving of the backpack : belt, hooks,..., and a closing and opening system of the charger
* Syeada will be in charge of building the last prototype and drawing the plans for the laser cutting : design of the main box on Illustrator and by hand
* Emeline will be in charge of the technical aspect : reseach on the electronic system (how to produce 2OV thanks to solar pannels linked to a lithium battery)and circuit designing on Thinkercad electronics and by hand  
:::

:::info
As we go further, if someone feels that he or she won't be able to finish his work on time, we will help each other and figure out how can we redistribute the roles.
:::

#### How are our roles connected ?  

:::warning
* Emeline : works on the electronic circuit, needs to know from the engineer the technical aspects of the electronic system
* Syeada : works on the box, needs to know from Emeline the size of the electronicparts, depth on the box depending on the foldable solar panels
* Nico : 3D printed parts, attachment system to a bag, additional prototype, opening and closing system with Syeada
  
:::
___


### Ressources

Here is a short list of useful websites and softwares for prototyping things.

:::success
- [instructables.com](https://www.instructables.com/): A great website with tutorials for (almost) everything
- [makezine.com](https://makezine.com/projects/): A well known magazine with tons of cool projects
- [thingiverse.com](https://www.thingiverse.com/) The world's largest 3D printing commmunity, with loads of projects
- [hackaday.com](https://hackaday.com/): If you are a bit hacker or want to become one, this site is for you!
- [wikifab.org](https://wikifab.org/wiki/Accueil): Just like instructables, but *en français*
- [Slicer](https://apps.autodesk.com/FUSION/en/Detail/Index?id=8699194120463301363&os=Win64&appLang=en) : A software to convert 3D models (.stl files) into laser-cutted slices, a great tool to build cardboard objects. 
- [Make a box](https://makeabox.io/) : A website to create boxes that can be laser cutted
- [Makercase](http://www.makercase.com/) : Another laser cutted boxes website
- [templatemaker.nl](https://www.templatemaker.nl/) : To create quiclky paper objects that can be cutted with the laser cutter.
- [Sculptris](http://pixologic.com/sculptris/) : A 3D sculpting tool, a fun way to create 3D models for 3D printing or laser cutting.

:::

Note in the section below all the projects and tools you've find to help you for the conception and fabrication of your final prototype.
:::warning
*   **Solar panel lamp**
https://wiki.lowtechlab.org/wiki/Lampe_solaire_%C3%A0_batteries_lithium_r%C3%A9cup%C3%A9r%C3%A9es : describing how using old computer batteries to produce energy
*   **Solar charged battery powered Arduino** https://create.arduino.cc/projecthub/igorF2/solar-charged-battery-powered-arduino-uno-645d89, it showed us how a circuit using solar panels is built
*  **Solar panel charger** 
https://www.amazon.fr/Foldable-portable-Panneau-solaire-Charger/dp/B01F2YLLLA, an inspiration for the design and the materials of the solar panel
*   ...
:::

### Demonstrator design
#### Drawing

:::info
Start by taking a sheet of paper and draw the global shape of your demonstrator, then explode it into the parts that compose it and draw them one by one.
:::

Drag-n-drop below the pictures of your drawings, don't forget to write a caption for each image :

:::warning
![](https://i.imgur.com/TJfP1q2.jpg)


Main picture : global drawing of the GreenCharger
:::

:::warning
![](https://i.imgur.com/rfZ3Vyb.jpg)

Part 1 
Solar panels : they are sued in fabric cut by a laser cutter. The stitching marks enable it to be foldable.

:::

:::warning
![](https://i.imgur.com/jpyPBQx.jpg)

Part 2 
Box and drawer : the electronic components and the storing space will be ther. The box is made of wood and cut by the laser cutter.
:::


:::warning
![](https://i.imgur.com/KlX5UmN.jpg)
Part 3 
Electronic circuit 
:::

 
___
### Means of fabrication

:::info
Now that you have designed your final prototype it's time to build it! Take the time to fill accuratly the following section to have a good overview of the building process.
:::

#### Tools

List below what tools you need for building the project: 
:::warning
* Laser cutter to create the box
* 3D printer for the attaches, the opening system
* Cutting pliers for the electronic circuit
* Glue gun for the box and the electronic components
* Gloves to protect your hand while you assembly the components
* Access to Adobe Illustrator
* Material for laser cutting the Solar Box and its related components- Wood and a choice of material- Polyester,cotton,softshell,Alcantara,Felt

:::

#### BOM (Bill Of Materials)
List in the table below all the elements you need to build your demonstrator (replace the exemples with your parts) : 
:::warning
|Part number| Part name   | Material /description    | Dimensions |Quantity |
|-----------| ----------- | ------------------------ | --------   |-----    |
|1          | Solar panels | Monocrystalline silicon / 7W each              | 240 x 140 mm | 4      |
|2          | Charge and discharge regulator  | Mini Li-ion USB Arduino TP4056                    | 15x37    mm | 4      |
|3          | Batteries from computer batteries     | 18650 lithium batteries                | 18x65x18 mm | 4      |
|4          | Tension boosters | DC/DC booster MT3608        | 17x37 mm        | 4       |
| 5        | Batteries support                     | Rovtop 18650        | 75x80x20 mm    | 1
| 6      | USB and USB-C port                     | Rovtop 18650        | 70x40x20 mm    | 1
| 7    | Box & Drawer  |  Wood 3mm thickness   |  123x100  cm   | 1
| 8    |  Solar Panel Flap |  Strong and waterproof fabric   |  64.621x100  cm   | 1
|9| Filament | Filament for 3D printer: ABS, PLA... | NA | 1
| 10        | Red and black eletric wires                   |       | 350cm each   | 1x2
| 11           |Sewing thread             |         | 300cm    | 1
| 12           |Iron coil             |         |     | 1

:::
:::success
Once you have decided what features to prototype and how, ask on slack the makers’ lab manager of your campus. He will give you some technical feedback and will tell you the material you need. Do not expect the makers’ lab managers to tell you what to build!
:::

___
### Conception

- Using **TinkerCAD** to design 3D parts.
:::warning
Exterior view of the device (without solar panels)

 ![](https://i.imgur.com/RPXuScG.png)

 
Close-up of the back attachment piece 
![](https://i.imgur.com/SrPC8tZ.png)

 The closure mechanism 
![](https://i.imgur.com/Yrx59Nn.png)


 (optional) Pen holder
![](https://i.imgur.com/qN0GlrX.png) 

 (optional) Cable holder
![](https://i.imgur.com/9fnqTOG.png) 

 (optional) Carabiner
 ![](https://i.imgur.com/eqGqGOJ.png) 
 
  (optional) Bag attachment for carabiner
 ![](https://i.imgur.com/eZqL357.png) 





:::

:::warning
There are several pieces, so there also are several tinkercad links
https://www.tinkercad.com/things/0fcf8Be5mIn-final-prototype-final-outside
https://www.tinkercad.com/things/cJHDKfe5e4u-back-attachment-ring
https://www.tinkercad.com/things/39u3lz5vYEF-closure-mechanism
https://www.tinkercad.com/things/4TMUMGT5Fjm-pen-holder
https://www.tinkercad.com/things/6K4U7yPpgbK-cable-holder
https://www.tinkercad.com/things/9ereF2Ncq2m-carabiner
https://www.tinkercad.com/things/16ikw8aQIyc-bag-attachment
:::
- Our electronic circuit
:::warning
As our electronic components of our project were not available on neither Thinkercad circuits or circuito, we drew it and also made a scheme 
![](https://i.imgur.com/lch0ibN.png)

:::
- Using **Illustrator** to design our box
:::warning

### Creating the Solar Box & Drawer 
* Create the shape of the artbox,
 The artboard dimension is 1060mm x 450 mm 
![Creating the box](https://i.imgur.com/I0Zkzi5.png)


* Create the shape of the box and the drawer. 
Size is W is 260 mm, L is 160 mm, H is 62 mm 
![Create the shape of the box and the lids. Size is W is 260 mm, H is 160 mm, H is 62 mm](https://i.imgur.com/SJ5hqFG.png)



* Creating the panels of the box (longer side) 
Size W is 260 mm ,H is 62 cm 
![ Creating the panels of the box (longer side) Size W is 260 mm ,H is 62 cm](https://i.imgur.com/0NTnOKC.png)

* Creating the side panels on the shorter side of the box 
![Creating the side panels on the shorter side of the box](https://i.imgur.com/b5qRcrh.png)

* Creating the USB port on the box panel

Size W is 12.1mm, H is 4.51mm ![Creating the USB port on the box panel
Size W is 12.1mm, H is 4.51mm](https://i.imgur.com/gflmEZr.png)


* Rotating the USB port.
![Rotating the USB port](https://i.imgur.com/TajWcUW.png)

* Press alt and continue  clicking  on the shapes to get the elipses shape.Then create an oval shape for the C-cable. Size W is 8.5 mm and H is 2.7 mm
![Press alt and continue  clicking  on the shapes to get the elipses shape.Then create an oval shape for the C-cable.
Size W is 8.5 mm and H is 2.7 mm](https://i.imgur.com/9eKNBhz.png)

 * Creating the drawer  bottom
 Like the previous step of creating the bottom part of the box, you will choose the rectangle tool.Double click on the rectangle tool and the option to change the size will show up. Put in the size as shown below.
 Size W is 252 mm, H is 156 mm ![Creating the drawer  bottom
 Size W is 252 mm, H is 156 mm ](https://i.imgur.com/vn48JWa.png)

 * Create the side panels for the drawer (longer side) by using the rectangle tool.
To create the side panel (long part for the back side), again choose the rectangle tool and double click on the rectangle icon to open the option to change the size, put in the measurement as provided  below. 
Size W is 252 mm, H is 54 mm  and your side panel is created. ![Create the side panels for the drawer by using the rectangle tool.
 Size W is 252 mm, H is 54 mm](https://i.imgur.com/os6Hqgq.png)

* Create the side panels for the drawer (shorter side) by using the rectangle tool.Similarly you again choose the rectangle tool and double click it to change the measurements. This will create the smaller side panels that will go on to the sides of the drawer. The measurement of the side panels are below.
 Size is W is156mm,H is 54mm![Create the side panels for the drawer (shorter side) by using the rectangle tool.
Size is W is156mm,H is 54mm](https://i.imgur.com/O6DlzNr.png)

* As one side panel is created, you can turn the shape to face the drawer bottom part. Do this by double clicking the rotate function, put 90 degree as the angle and press okay to turn it. 
![Double click the rotate function, put 90 degree and press okay to turn it](https://i.imgur.com/oD2TDtb.png)

* Select the same shape and copy the shape by double clicking the rotate function, this time using 180 degree then press copy, to flip the shape of the new rectangle.Now, you hav both the panels for the sides.![Select the same shape and copy the shape by double clicking the rotate function, this time using 180 degree then press okay, to flip the shape.](https://i.imgur.com/eMPBETi.png)

* Create the inner partition for the drawer by using the rectangle tool. For this, like in the previous steps, double click the rectangle tool, put in the measurements as shown below. This is the part that will be inside the box and act as a partition to create two compartments. One for the electronics and one empty space to store your things.
Size W is 153 mm,H is 51 mm
![Create the inner partition for the drawer by using the rectangle tool.
Size W is 153 mm,H is 51 mm](https://i.imgur.com/berXN8X.png)

* To create an opening on the drawer and the box, create a line of 37mm to measure the distance then add a circle of size W of 12 mm, H of 12 mm on both the panels using the elipses tool. This is found by using alt and clicking the shape tool until the elipses shape is found. Care should be taken that they are on the same side.![To create an opening on the drawer and the box, create a line of 37mm to measure the distance then add a circle of size W of 12 mm, H of 12 mm on both the panels.Care should be taken that they are on the same side.](https://i.imgur.com/K0WrYs9.png)

* Once you put the shapes into the panel,  you use the Shape tool to create a shape with the hole on the side.This will merge the shapes together.

![](https://i.imgur.com/9vmfmRU.png)

* Then select the whole file by selecting the first cursor tool and drag it across the shapes you have created and then go to View-Guides- Make Guides (this means that the file will only be visible in illustrator) and all the shapes becomes blue.
 ![Then select the whole file and go to View-Guides- Make Guides (this means that the file will only be visible in illustrator) and all the shapes becomes blue](https://i.imgur.com/ihmucWn.png)


* After selecting the Guide, it will look like this.![Shapes will be in blue](https://i.imgur.com/cl4sP6Q.png)


* Then use the pen tool to outline the shapes. ![Using the pen tool to outline the circle.](https://i.imgur.com/w4iSDXs.png)

* After compelting outlining all the shapes, deactivate the 'Make Guides' by going to View-Guides- Hide Guides.![Deactivate the 'Make Guides' by going to View-Guides- Hide Guides after outlinging the shapes.](https://i.imgur.com/maZaHUP.png)


* Select all the shapes and then click the outline tool and change the color to red.
![Select all the shapes and then click the outline tool and change the color to red](https://i.imgur.com/l9fprJw.png)



* Select the shapes and change the Stroke Weight to 0.001 mm.
![Stroke Weight to 0.001 mm.](https://i.imgur.com/fdTZYAn.png)

* Save File

* To print the file press Control+P or go to Files-Print
* Then in the options select Preference
* Select your printer and sent to the Job Control Center, arrange your materials and press play to to print out the pieces.

### Creating the Fabric Portion, the cover with solar panels

* Create a new file, by pressing Cntrl+n
![](https://i.imgur.com/QglgNVY.png)

* For the top Lid and Solar panel flaps:
Size of Artboard : W is 700 mm, H is 750 mm
![](https://i.imgur.com/G5AtZM9.png)

* Create the back side of the solar panel where the panels will sit on
![](https://i.imgur.com/q8lGqeO.png)

* Choose the rectangle tool. Create the rectangle. Size: W is 260 mm, H is 640 mm
![](https://i.imgur.com/nm3MSPo.png)

* Again choose the rectangle tool. Create the rectangle. Size: W is 260 mm, H is 140 mm
![](https://i.imgur.com/HUpjyAl.png)

* Copy the shapes for 3 more times, by using the same rectangle tool or by using the rotating tool. It is easy to click the rectangle tool and create the rectangle shape of the same dimension therefore it has what has been done here.
![](https://i.imgur.com/meXTHyL.png)

* Then similarly,we create more rectangles, this time the size W is 250 mm, H is 130 mm
![](https://i.imgur.com/5irmmLO.png)

* Then we lay the shorter rectangle shape onto the bigger one on the center.
![](https://i.imgur.com/OH8AIaC.png)

* After all the rectangles are laid on top of each other![](https://i.imgur.com/5XXwlj0.png)


* Choose the Shape Building option. We use this to merge the two shapes.
Select the one rectangle.Like this and use the Shape tool
![](https://i.imgur.com/2VqMJj5.png)
![](https://i.imgur.com/5KEV0lP.png)


* Then once completed, you will have smaller pieces of rectangles resulted due to using the shape builder. You can delete them.
* ![](https://i.imgur.com/CghuFCA.png)

* Then we select the whole document 
![](https://i.imgur.com/ekSEDhu.png)

* Then go to View- Guides-Make Guides
![](https://i.imgur.com/v0BwQH0.png)

* It creates the shapes into blue.
![](https://i.imgur.com/lPHHcLY.png)

* Now take the pen tool and outline the shapes.
![](https://i.imgur.com/FSBK3eF.png)

* Once done, go to View-Guides-Hide Guide
![](https://i.imgur.com/PSZQQBb.png)

* Then go to colors and select red- R:255
![](https://i.imgur.com/yu4QRnc.png)

* Then change the stroke weight to 0.001 mm. This is very important.![](https://i.imgur.com/b7vHPZF.png)

* Save File.

* To print the file press Control+P or go to Files-Print
* Then in the options select Preference
* Select your printer and sent to the Job Control Center, arrange your materials and press play to to print out the pieces.

 **CARE SHOULBE BE TAKEN WHILE OPERATING THE LASER CUTTING MACHINE**
 
 **USE LASER CUTTING SAFE MATERIAL**
 
 :::




___
### Building process

Describe below the building steps of your demonstrator and insert a picture for each step :

:::warning
### For the Box and Drawer portion
#### **Step one** : Assemble the laser cut box

* Once the wood part and the fabric parts are laser cut and ready for assembling. 
 Use glue or other choice of adhesive to  attach the parts of the box.

![Box and drawer are of wood, use appropriate adhesive to attach them as shown in the picture below](https://i.imgur.com/wjr92GY.jpg)



#### **step two** : Assemble the laser cut drawer

![Box and drawer are of wood, use appropriate adhesive to attach them as shown in the picture below.](https://i.imgur.com/kV57Nnn.jpg)

### For the Fabric portion
* Take the solar panel and attach them by using your choice of adhesive or by sewing.
![Take the solar panel and attach them by using your choice of adhesive or by sewing.](https://i.imgur.com/GOsZk0j.jpg)

* Attach sewn solar panel and the frame that is made of fabric by sewing it on the larger piece of material as shown in the picture.
![Attach sewn solar panel and the frame that is made of fabric by sewing it on the larger piece of material as shown in the picture](https://i.imgur.com/oKaC1Yo.jpg)

* Once the solar panels are attached to the biger fabric piece, attach the big fabric piece on to the box like shown.


![Attachign the fabric piece with solar panel to the larger piece](https://i.imgur.com/izPCELc.jpg)



:::

:::warning
#### **Step two** : Add necessary 3d printed parts and all optional parts that you may decide to use.
In order to have a better idea of how the device should appear, you can look at this 3D model.
[final prototype model](https://www.tinkercad.com/things/0fcf8Be5mIn-final-prototype-final-outside)

First, build and assemble the box and drawer using the laser cutter.
When this is done, you can start integrating the 3D parts.

- Attachment rings:

You can either screw them in or glue them. Four 3mm holes for standard screws have been designed on each piece, to provide users with both options.
Screwing might be the sturdiest way to install these pieces, although also the most complicated as it requires more material and you have to be sure your screw isn't too long so its tip does not pierce the bottom of the box.
![attachment rings pic](https://cdn.glitch.com/d6d601ef-35a6-49df-ae0e-80508a8b5e8d%2FScreen%20Shot%202020-04-23%20at%2000.36.53.png?v=1587595030962)

- Closing mechanism:

Must be glued onto the device, in front of it, in the middle. 
![closing mechanism location pic](https://cdn.glitch.com/d6d601ef-35a6-49df-ae0e-80508a8b5e8d%2FScreen%20Shot%202020-04-23%20at%2000.48.32.png?v=1587595850912)The longest piece of the four should be in the middle, and make the junction between the drawer and the device's ceiling.
Finding out how to make them fit together should be extremely simple, a bit like assembling four Lego pieces!
The best way to explain the way they should be assembled is to show a picture: ![closing example](https://cdn.glitch.com/d6d601ef-35a6-49df-ae0e-80508a8b5e8d%2FScreen%20Shot%202020-04-22%20at%2020.31.54.png?v=1587581879659)

- Pen, cable holder:

Are supposed to be glued inside the drawer, in its right section, as shown on this picture. ![draw](https://cdn.glitch.com/d6d601ef-35a6-49df-ae0e-80508a8b5e8d%2FScreen%20Shot%202020-04-22%20at%2021.17.50%20copy%202.jpg?v=1587583689112)
You can then use them to attach any cable for instance![cable pic](https://cdn.glitch.com/d6d601ef-35a6-49df-ae0e-80508a8b5e8d%2F30c7ff80b4be03b9f0f9f652d81a5fc0_preview_featured.jpg?v=1587582924132)
If you want to add any other 3D piece or other item to store things inside the Greencharger, you should glue them in the right section of the drawer as well, since the left part will be full with electronics.

- Bag attachment:

Should you wish to use it, the bag attachment is to be installed on a durable piece of fabric (bag, jeans, jacket...) like this: ![bag attachment pic](https://cdn.glitch.com/d6d601ef-35a6-49df-ae0e-80508a8b5e8d%2F414CMRcFsBL.png?v=1587583905651)
It is strong enough to handle the relatively light weight of our device. However, we would not recommend using it to carry heavy objects as its robustness can not replicate an object that is not 3D printed!

:::

:::warning
#### **Step three** : Lithium cells extraction and measures
**1) Extract four cells from our two broken computers' batteries**:

We highly recommand to put on gloves for this step.
One computer battery works with 3 to 6 lithium batteries, so we need two computer batteries to obtain 4 lithium cells.
- Fix the battery on a vice so that it does not move any more, and with the help of a hammer and a chisel open it :
![Battery opening](https://cdn.glitch.com/d6d601ef-35a6-49df-ae0e-80508a8b5e8d%2FLampe_solaire_a%CC%80_batteries_lithium_re%CC%81cupe%CC%81re%CC%81es_R_cup_ration_de_batteries_1_-_Ouverture_batterie.jpg?v=1587579014289)
- Isolate the cells from all the other components in the battery using a pair of wire cutters :
![Battery opening](https://cdn.glitch.com/d6d601ef-35a6-49df-ae0e-80508a8b5e8d%2FLampe_solaire_a%CC%80_batteries_lithium_re%CC%81cupe%CC%81re%CC%81es_R_cup_ration_de_batteries_2_-_De_cortiquer_cellules.jpg?v=1587579010059)
- Do it a second time with the second battery.

**2) Select the four better lithium batteries:**

*Voltage measure:*

We start by measuring the voltage of each cells in order to check if they are working properly. Every cells that have a voltage lower than 3V will not be able to be used in this project and should be recycle.

- Using a multimeter, in DC mode, measure each cells and check the one that are usable ofr the project.
![Voltage measure](https://cdn.glitch.com/d6d601ef-35a6-49df-ae0e-80508a8b5e8d%2F1600px-Lampe_solaire_a%CC%80_batteries_lithium_re%CC%81cupe%CC%81re%CC%81es_Powerbank_simple_IMG_0952.jpg?v=1587654844181)

**Be carreful : If the computer battery seems to have liquid on the outside, do not open the box, lithium is harmful in high dose.**

*Measure the capacity :*

To measure the capacity of a cell, we have to charge it to the maximum and then discharge it. Those cells are lithium based, and need a specific charge and discharge system, ususally the maximal charge is 4,2 V and the minimum is 3V. Going over those limits will damage the cell.

- Use a PowerBank : it will alow you to charge many cells at once with a USB port.
- Charge the cells and wait until the charge is complete (all the light should be on), it will be done in about 24 hours. 
![Charge the cells](https://cdn.glitch.com/d6d601ef-35a6-49df-ae0e-80508a8b5e8d%2FLampe_solaire_batteries_lithium_r_cup_r_es_R_cup_ration_de_batteries_3_-_Charge_batteries.jpg?v=1587654833982)
- The cells will be charge at their maximum (4,2V), now we have to discharge them.
- You should use an Imax B6 : a tool that allow to discharge the cells and check their capacity.

How to use the tool :

-the voltage : it will ask you which type of cells you would like to check, you should choose the lithium one. It will automatically regulate the discharge at 3V minimum.

-the intensity : set to 1A in order to have a quick and secure discharge. In this condition, the discharge should take between 1 hour and 1 hour and half.

- Connect the magnet to the crocodile clips, then connect to the cell, the magnet help to let the current pass through the Imax B6 to the cells. 
![Discharge the cells](https://cdn.glitch.com/d6d601ef-35a6-49df-ae0e-80508a8b5e8d%2FLampe_solaire_batteries_lithium_r_cup_r_es_R_cup_ration_de_batteries_4_-_De_charger_cellules_IMax_.jpg?v=1587654838052)
- Discharge the cells until they are completely empty.
- Note the capacity on the cell. The higher the better.
- Sort your cells by capacity : <1000 mA, between 1000-1300, 1300-1500 and >1800 mA.
- Choose the 4 cells with the best capacities.

The tutorial for 1) and 2) was created by the Low-Tech Lab, don't hestitate to visit their [website](https://wiki.lowtechlab.org/wiki/Accueil) for more inspiration !


:::
:::warning
#### **Step four** : Electronic assembly
![](https://i.imgur.com/UTqamI6.png)
**STEP 1 : Connecting the solar pannels to their charge controllers.**

![Step 1](https://cdn.glitch.com/d6d601ef-35a6-49df-ae0e-80508a8b5e8d%2FCapture%20d%E2%80%99e%CC%81cran%202020-04-22%20a%CC%80%2021.35.48.png?v=1587584169410)
- First you'll have to assemble the solar powered battery charger circuit. This uses the energy from some solar cells to charge the batteries, and boosts the voltage from it to the 5V used by the USB port.
- Solar cells are connected to the input of the lithium battery charger (TP4056), whose output is connected to the 18560 lithium battery.
- With the wire cutter, cut 4 red wires and 4 black wires of 12cm of length. 
- Then connect them with your soldering iron from the solar panel to the charge regulator. The red wire goes to the + of the solar panel to IN+ of the charge controller and the black wire from the - of the solar panel to the IN- of the charge controlelr.
- Repeat this for each solar panel.

**STEP 2 : Connecting the charge controllers to the batteries.**
![Step 2](https://cdn.glitch.com/d6d601ef-35a6-49df-ae0e-80508a8b5e8d%2FCapture%20d%E2%80%99e%CC%81cran%202020-04-22%20a%CC%80%2022.01.16.png?v=1587585721789)

- Then you will need to cut 4 red wires with the wire cutter of respectively 96 cm, 80 cm, 64 cm and 48cm and 4 black wires of respectively 106, 90, 74 and 58 cm.
- The red wires go from BAT+ of the carge controller and the black wires from the BAT- of the batteries.
- Do that with the 4 charge controllers, one with the 96cm red wire and the 106 black, one with 80 and 90, one with 64 and 64 and one with 48 and 58.
- Insert the solar pannels and the charge/discharge controllers in the fabric by laying down the plain fabric rectangle and put the solar panels
on with spaces according to the following darwing :
![Solar panel assembly 1]https://cdn.glitch.com/d6d601ef-35a6-49df-ae0e-80508a8b5e8d%2Ffullsizeoutput_2624.jpeg?v=1587587196715
- Put the other piece of fabric above and stitch the two pieces of fabric together and all around the solar panels.
- Also put sitching marks under 1 cm of each solar panel so that the material will be foldable.
- Make sure to let enough space to let the wires out of fabirc.
- Glue the solar panel where the wires come from to the top of the box to with the glue gun. Make sure to let the wires go from the front to the back of the
   box before gluing, according to the drawing.
- Pass the wires to the back whole of the drawer and connect the wires from the charge controller to the lithium batteries using your soldering iron. The red wires go to the + of the batteries and the black ones to the minus.

**STEP 3 : Connectiong the batteries to the step-up boosters.**
![Step 3](https://cdn.glitch.com/d6d601ef-35a6-49df-ae0e-80508a8b5e8d%2FCapture%20d%E2%80%99e%CC%81cran%202020-04-22%20a%CC%80%2022.17.45.png?v=1587586692793)
- Then you need to cut 4 red wires of 9cm and 4 black wires of 2cm and connect these wires from the lithium batteries shield to four step-up boosters.
- The red wires go to the + of the shield to the VIN+ of the step up booster, the black from the - to the VIN- of the step-up booster

**STEP 4 : Connecting the step-up boosters to the USB port.**
- Now you can connect the step-up boosters to the USB port with 4 black wires and 4 red wired of 2cm, the red wires going from the VOUT+ to the + of the USB port
the black ones going from the VOUT- to the - of the USB port
- Put the lithium batteries in their shield.

:::

:::warning
* This is how your finished product will look like once it has been assembled.

![](https://i.imgur.com/bVCzOfL.jpg)
![](https://i.imgur.com/u20TQtV.jpg) 
:::


##### Prototype video
Use your smartphone to make a short video (30s) showing your improved prototype, and post it on the Slack channel of your group.
  
---
# P4. Share
:::info
You’re almost there! You’ve a built your final prototype, now it’s time to share your project with the world. During the sharing phase you’ll make your project understandable and makable by everyone.
:::

:::warning
## Team 10

**Team members**:Emeline KLEINMANN-DUKIC, Nicolas RAMOFF, Syeada ASIMA

Emeline was in charge of creating the electronics circuit of GreenCharger and leading the team.

Nicolas designed the 3D features of our porject.

Syeada was in charge of designing the 2D elements : the box, the drawer and the solar panel holder. She was also in charge of taking notes after every meeting with the tutor.

Each member of the team conducted test users to improve our prototypes and we discussed together at each step of the designing process. 

**Topic**: "Improving teleworkers’ experience while traveling thanks to low-tech"

**Description**: Product- The GreenCharger, a solar powered charger made with broken computer batteries

The project was to find a solution to the inconviniences faced by many teleworkers. As most of the teleworkers are working on their electronic deveices, having a stable and a reliable source of power is crutial.
However, it is not always the case when teleworkers tavel to remote locations around the world for their work or simply to travel. Even though we have access to portable chargers that many of us carry, the team decided to create a Solar powered box to help travellers continue using their electronic devices even if they are in the middle of a forest or at in the desert. Telleworkers and travellers can simply carry
our travel friendly device with them and continue with their journey.
Our Solar charger is made of two parts : a box with a drawer and a series of solar flaps. The solar panels are foldable so you can unfold them on your backpack while you travel.  
The drawer is divided into two parts, one part houses the electronical components and the other part is there for users to store their wires and stationery for convinience. The box
also contains two USB ports and a C-cable outlet to charge a laptop.

**Target Users/ End Users**: Teleworkers & Travellers

Our target users were teleworkers that travel all around the world and especially in remote places but sometimes fear to go on an island or a place because there might be no power.
We found out that solutions exist for these users but thanks to our tests we noticed that it's not enough : solar chargers are never enough powerful to charge computers.

**Mockup User Test**: Students & experienced teleworkers

We had three test users.
-Test User 1 : 28 years old, Designer
-Test User 2 : 24 years old, Student
-Test User 3 : 24 years old, Teleworker for a media

-Test User 1 : 28 years old, Designer- Commented that the protoype was bulky, the design was not good looking and already uses a similar product to our prototype

-Test User 2 : 24 years old, Student- Commented that teleworkers and travellers like him prefers things that are durable, lightweight and small in size and design

-Test User 3 : 24 years old, Teleworker for a media- Shared that it would not be appealing to some as it was in the form of a bag (as the the original prototype was a bag instead of a box)
since it would be difficult to carry an additional bag while traveling. The test user also mentioned that they need to charge theri laptop as well
and does not need pen and paper for note taking.

**Iterations**:

Test protocol : 

I - Validating the need
1)Have you already been in a situation while traveling where you can’t charge your working devices (no plugs, no power, not the good convertor, …).
2)Are you sensitive to sustainable development ? 
3)Are you using portable chargers while you travel ?

II - Presentation and test of our project 
4)We decided to create GreenCharge, a low-tech portable charging suitcase. It will enables you to keep working even when you go on adventures in remote places where there is no power. Unlike portable chargers, it’s a low tech device, less harmful for our planet ! Moreover, it’s not only an electronc device, it’s a work experience thanks to its features.
5)What features will you expect in such a project ?
6)How would you imagine it 

III - Test of our prototype 
7)We show the video of our prototype and test the user
8)Is something unclear to you ?
9)Can you explain to us how it works ?
10)Will you be able to open the suitcase ?
11)Will you be able to charge your phone ?
12)Will you be able to charge your phone manually ?
13)Will you be able to charge your phone thanks to solar panels ?
14)Will you be able to take some notes while you charge it ?
15)What do you think of the design ?
16)How would you improve this prototype ?


Taking into all these suggestions, we came up with the idea of the box instead of the bag. The box would safely house the electronical components. We created spreadable solar panelling
so that the extra surface area can charge up the devices at a faster rate than other traditional solar chargers, we also added the C-cable for users to be able to recharge their laptops.
We have created the flaps out of fabric so that users can customize the patterns of their solar box to express their style. The fabric also helps keep the weight of the total device low.
The product that is presented in Glitch is the result of taking account of all the suggestions by our test users.

**Pain Points**: 

We found that some of the products sold online were expensive. Many only charges phones and not laptops.

**Advantages**:

Our product is cheaper than other alternatives, they can be created, customized and printed at the Makerslab at EmLyon r at any place where one has access to
laser printer. Users can customize their product by using the kind of material they like. Users can reuse,recycle materials to create our product which not only
cut down theri costs in developing the product but will be environmentally freindly as well.
GreenCharger runs 100% on solar energy therefore it is favorable to many peopel who are looking to cut down on their energy consumption.

**How our product solves the issues**: 

Our topic was "Improving teleworkers’ experience while traveling thanks to low-tech". As increasign number of people have the flexibilty/are required to telework or are working while travelling to remote parts of the world
the team believes that there should be a way low-tech way for the users to be able to keep usign their devices without worrying about charging their devices when they are travelling.
As our products run on solar panels, users can unfold their box and charge their devices while theyr are sitting under the sun on top of a mountain or at the beach. They do not have to look for a power outlet nor a
coffee shop to recharge their devices. They can trully be mobile all the while being environmentally friendly.

:::

:::warning

[Glitch Documentation Link of GreenCharger](https://glitch.com/~gr10-the-green-charger)
 :::

