# Quefrency Rev. 2 & Sinc Rev. 1

## Build Compatibility
This build guide is exclusively for Quefrency Rev. 2 and Sinc! They both have pre-soldered components. If you need the Quefrency Rev. 1 PCBs, see [Quefrency Rev. 1 Build Guide](https://docs.keeb.io/docs/quefrency-rev1-build-guide/).

## Videos of Builds
Here are some cool folks who have built these keyboards! Give them a look to see how they do it.
+ [FrostyKoala - Prototype Quefrency Rev. 2 Build](https://youtu.be/C-eKjwpLnfI)
+ [FrostyKoala - Prototype Sinc Rev. 1 Build](https://youtu.be/3_U_SxKhygA)
+ [VogonPT - Prototype Sinc Rev.1 Build Stream](https://youtu.be/zpeZihPfzIU?t=40)

## Parts List
Now you've watched some cool videos and feel inspired! Get your parts:
+ PCBs:
+ [Set of Quefrency Rev. 2 PCBs](https://keeb.io/products/quefrency-rev-2-60-65-split-staggered-keyboard)
+ [Set of Sinc Rev. 1 PCBs](https://keeb.io/products/sinc-split-staggered-75-keyboard)
+ Plates:
+ [Plates for Quefrency Rev. 2](https://keeb.io/products/quefrency-rev-2-60-65-split-staggered-keyboard)
+ [Plates for Sinc Rev. 1](https://keeb.io/products/sinc-split-staggered-75-keyboard)
+ 1 [TRRS cable](https://keeb.io/products/trrs-cable)
+ Switches (MX-compatible ones)
+ Optional parts
+ [2u PCB mount MX stabilizers](https://keeb.io/products/cherry-mx-stabilizer) if using 2u/2.25u/2.75u keys
+ [Rotary Encoder](https://keeb.io/products/rotary-encoder-ec11) and [Knob](https://keeb.io/products/rotary-encoder-knob-ec11)

## Build Steps Summary
1. Prepare components
2. Add 2u stabilizers to PCB
3. Add switches
4. Optional Stuff!
+ Solder rotary encoder (optional)
+ Solder in-switch LEDs (optional)
+ Note: For Kalih Box switches, LEDs must be installed before the switches.
5. Assemble!
+ insert standoffs into middle layer (optional)
+ Screw standoffs into switch plate
+ attach bottom plate using screws
6. Re-Programing Board Note
7. Rejoice!
8. Glossary

## Prepare Components
Have your soldering iron, solder and, if you feel accident prone with your solders (it's ok! Happens to the best of us!), a solder remover.

Some individuals may want to lubricate their switches. If you'd like to, go ahead and do that now before starting the process. For further details on that, go [here](https://www.maketecheasier.com/how-to-lubricate-keyboard-switches/).

TODO: make keebio version of the 'how to' on the aforementioned page.

Get a playlist of some jams you like and get started!

## Add 2u stabilizers to PCB
Add the 2u stabilizers into the PCB. The stab wire will be on the bottom side of the switch for everywhere except for the bottom row. On the bottom row, the stab wire will be above the switch. Do this before installing the switch plate and switches, as stabilizers can not be removed after the switches have been soldered in.


Afterwards, fit the plate over the stabilizer(s).

## Add Switches
Now on to the exciting part: putting the switches in the switch plate and solder.

:::note::: For Kailh Box and Kailh Choc switches, there is no cutout to insert in-switch LEDs, so the LEDs must be added *first*. If you're adding LEDs, first do the LED installation step and **then** come back to this step of switch installation.

Add switches into the switch plate. It's a good idea to ad switches to the corners **first** and then solder them before installing the rest of them:

Solder the switches onto the PCB.

Add the rest of the switches and solder them.

## Optional Stuff!

### Solder Rotary Encoder
:::note::: This step can be done after installing the switches. For the prototype plates, the encoders had to be installed first, but for the plates available on the store, the switch cutouts are now large enough to allow the encoders to be installed later.

Install the encoder onto the PCB and solder the 2 pins at the top side of the encoder and the 3 pins at the bottom side. The 2 side legs do not need to be soldered to the PCB.


### Solder in-switch LEDs
Polarity of the in-switch LEDs is important. Match up te longler leg of the LED to the **+** sign of the LED pins on the PCB. The shorter leg will match the **-** sign.

Insert the LED through the switch and PCB:

Bend the LED legs out so it doesn't fall out while soldering the LED in:

Solder the LED legs and then clip the excess length on the legs. Be careful to not damage the resistor next to the LED pads.

Not that some of the switch layout options have the -/+ markings swapped, so make sure to always put the longer leg through the + pad. If you are unsure, plug the PCB in and test the LED before soldering it in.


## Assemble!
Insert a screw through the top of the switch plate and attach a standoff from the bottom side of the plate:


Repeat the process for the rest of the plate.


:::Note::: If you have a middle layer, *now* is the time to insert it around the standoffs.

Put bottom plate on and add screws:

## Re-Programming Board Note
Oh, looking to re-program your board? Never fear! Come look [here](https://docs.keeb.io/docs/flashing-firmware/).

## Rejoice!
You have a keyboard! Savor this moment of victorious keyboard construction.

## Glossary
Woohoo! If you're looking here, you're going to learn some new words.

*LED* - Light-emitting diode. These are great if you want to jazz up your keyboard with [dancing](https://docs.keeb.io/docs/lighting-options) [lights](https://docs.keeb.io/docs/adding-rgb-underglow).

*PCB* - "Printed Circuit Board" is what that stands for. This holds all the info that makes a keyboard work.

*Rotary Encoder* - This is a part that takes information to the computer from being pivoted left and right. With an attached knob, you'll be able to input some sliding scale info.

*Stabilizers* - Stabs, for short, provide support to a larger keycap

*Stand-offs* - These pieces attach to screws and allow space to be created between the keyboard pieces

*TRRS cable* - This will let your split keyboard sides to talk with one another. The acronym stands for tip ring ring sleeve. Usually used for audio, but in the context, is needed to connect split keyboards.

*What do you mean, Re-Program?* - This note is talking about the information on your keyboard's PCB telling your computer what button you're pressing.

If you have questions about tools to accomplish this with, we have a [page](https://docs.keeb.io/docs/soldering-tools/) for you that you're welcome to visit!