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# System prepended metadata

title: 'Seminar week 3: Framing open hardware projects'

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# Seminar week 3: Framing open hardware projects

[Back to overview]()

[Link to the lesson](https://hackmd.io/AHVevvT-SbOY2jq4FYdieg?both#What-are-constants-in-projects)

## Participants
|initials| name | discord user |
|----|---|---|
| MM | Miguel F. Marrero Tarrau| mmtarrau|
|IS| Ivan Santana | ischingx|
| NA | Nemo Andrea | sandcrawler|
|sr| Sara Reichert| sarara|
|TH| Tom Hommes| Tom3000
|S| Sanli |
|AP| Alice Peck | Alicee|
|IW| Ivo Wieling |Ivo
|LD| Laura Dinkla |
|ME| Mohammad Ebrahimi|moeb8001|
|VK | Vincent Kranendonk | vincent_kranendonk |
|PO|Pepe Ocampo | |
|JN| Jannes Nelissen ||
|NH| Nanami Hashimoto|

## Icebreaker

Who is vegetarian or vegan? Who can eat anything?



## Exercise 1: Create a first value proposition
:::warning  
Add comments down here
::: 
::: spoiler IS
https://hackmd.io/2yG9CwaJScaNzMj2p28dfA

::: 


::: spoiler sr
Pose
![](https://i.imgur.com/9pcNHaw.jpg)

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



:::
::: spoiler MM
https://hackmd.io/@M3VcsL8RSjmCZdMQNzeMwA/HyXyNLL1j



::: spoiler NA 
Microtubule lamp project

```
Here’s Moore’s original 6-step value proposition formula:
For: Molecular biologists/scientists/science enthousiasts
Who: Looking for decoration/art
The: microtubule-lamp is a decorative-item
That: Shows off the beauty of a vital protein structure
Unlike: off the shelf novelty lights
Our product: Has a novel subject and unique PCB
```

Minimal music player project

```
Here’s Moore’s original 6-step value proposition formula:
For: (caretakers of) people with cognitive or physical disabilities preventing traditional music player operation
Who: People who want to enjoy music
The: minimal-music-player is a music-player
That: Prioritises easy of operation, spotify integration, and admin management 
Unlike: Traditional spotify players that are full featured, but complex for operator.
Our product: Is geared for use in disability care institutes
```
:::


::: spoiler PO
## Automated microscope

### Jobs
– Analysis of Pap tests in rural communities’ health centers, where there is a
lack of specialized doctors and technicians (pathologists).
– Not the main focus but it could be used to diagnose many more diseases de-
tactable by brightfield microscopy or by fluorescence microscopy.
### Pains
– High cost for expanding regular infrastructure for cervical cancer screening.
– Lack of cytotechnologists and pathologists in public health centers.
### Gains
– Wide coverage of Pap test.
– High specificity and sensitivity values.
– Low waiting time for results.
### Product features and specs
for some projects) This is like the core concept of your solution, key features and
specs.
– Low cost.
– Automated Pap smear analysis.
– XY slide scanning and autofocus functionalities.
– Low user dependency.
– Fluorescence microscopy.
### Pain relievers
– Low cost device that could be massified to improve coverage in rural and low
resource settings.
– It could considerably reduce the needs for in situ specilaists.
### Gain creators
– It could be a cost-effective alternative compared to the conventional scheme to
improve coverage.
– There have been reports of Neural networks achieving parameters (specificity/sensitivty)
comparable to those associated with specilaists.
– The analysis could be done in situ and throw results in few minutes.
:::
## Excercise 2: Prioritize your target specs and features
:::warning  
Add comments down here
:::
::: spoiler MM
https://hackmd.io/@M3VcsL8RSjmCZdMQNzeMwA/HyXyNLL1j
::: spoiler sr
![](https://i.imgur.com/jvc0Ffq.jpg)
Green = need to have
Blue =
Pink = nice to have
:::


::: spoiler NA
**Microtubule lamp project**

Must have
1. MOSFET drivers for light sources
2. Single USB-C port for programming and power
3. A compact PCB

Should have
1. Circuit protection against shorts
2. Safe, reliable code
3. Low energy draw
4. Low cost (target <60 euro)

Could have
1. Plugin API
2. Sensor stemma port
3. Embedded temp and humidity sensor
4. Capacitive sensors

Won't have
1. High power LED drivers
2. Mobile app
3. Displays

**Minimal Music Player**

Must have
1. Display for interface
2. Large, accessible buttons
3. Wireless connectivity

Should have
1. Mechanically robust construction
2. Admin features (lock mode)
3. Night mode (turn off at night)
4. Sub 200 euro pricetag
5. Raspberry Pi as single processor

Could have
1. Web interface for config
2. Simple custom PCBs for improved assembly
3. Automatic display dimming through light sensor

Won't have
1. Built-in speakers
2. Many hardware variants (i.e. alternate versions)

:::
:::spoiler IS
https://hackmd.io/eXoZF0puTMG09R4Ki_Liow?view
:::


::: spoiler PO
**Automated microscope**

Must have
- Low cost (<500 EU).
- XY scanning.
- Autofocus.
- Low user dependency.
- Automated Pap smear analysis.

Should have
- Fluorescence capability.

Could have
- Possibility for changing microscope objectives in an easy manner.

Won't have
- Variety of filters for fluorescence microscopy.
:::

:::spoiler IW
Muscow
M
basic interface - speed - compression - tension
SolidWorks/STEP/STL cad files / bill of materials
Electronic scheme Arduino Uno shield 
Software Arduino + library files
Aliexpress 24v actuator, 300mm stroke
Aliexpress caliper
max 5000N (load cell and actuator)
S
calibration program
assembly description
trouble shooting doc
PCB CAD file (not available, now closed source eagle files)
C
3-point bending
high power actuator
high frequency serial interface
Higher load 
W
linux/ android/ apple interface
Other arduino boards

:::

## Exercise 3: Frame your next iteration 
:::warning  
Add comments down here
:::

::: spoiler sr
design first layout of the board with limited parts 
:::

::: spoiler NA
**Microtubule lamp**

Goal: generate the 3D printable 'sculpture' part of the design and from that generate a set of dimensions (a frame if you will 😉) that everything should fit within.

**Minimal music player**

For this project there are two objectives currently, to be worked on this week.
1. Small tweaks to software
2. Generate proper setup experience and documentation
:::

:::spoiler IS
The goal is to design the wireless sensor network ensuring proper communication between the nodes and the coordinator.
:::


:::spoiler PO
The goal is designing a new PCB (there is already a first design that had some issues) for connecting several components; step motors, lighting, limit switches, etc.
:::
:::spoiler IW
The goals are...
-Work out the license type and find potential issues involved
-Make electronic scheme with bom pointing to available parts.
-(Develop a shield-kit (solder yourself) for Arduino that can be made available.)
-(Make a video while assembling the system)

:::
## Exercise 4 (Optional): Generate an assignment
:::warning  
Add comments down here
:::

Alice: Provide the exercises upfront due to time conflict with classes.(Pepe also suggested to provide lessons on Fridays to have the weekends to also look into the lessons.)

## Feedback
### How do you find the material
not very useful: 
long:
Very basic:
to the point: 
very advanced:

### Other remarks:

### What topics or aspects were you expecting that we missed?