2 layers97 × 94.7 mm
ESP32-adapter pan esp3212
pcbreflux/espressif
all espressif stuff will committed here
222 parts608GPL-3.0
2 layers439 × 134 mm
CustomKeyboard Simplified
anvaymathur/CustomKeyboard-1Creating a custom keyboard using the https://keeb.hackclub.com/ guide
- Size
- 439 × 134 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 222
- Nets
- 161
- Pads
- 1,299
- Tracks, vias
- 1,180, 41
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 11 Aug 2026
- Updated
- 26 Oct 2026
Overview
CustomKeyboard Simplified is an open-source printed circuit board by anvaymathur, from the anvaymathur/CustomKeyboard-1 repository on GitHub. It is a 2-layer board of 439 × 134 mm with 222 parts on 161 nets, routed with 1,180 tracks and 41 vias.
Its parts include 113 switches, 105 diodes, 1 capacitor and 1 IC. It belongs with the keyboards and input boards and the RP2040 boards of this library.
README
README.mdAtlas
Atlas is a custom 100% layout keyboard with 104 keys and 1 rotary encoder volume knob. It uses QMK firmware and was built to learn more about custom PCB building and learn tools like KiCad as well as learn and practice soldering.
I built this project to participate in Hack Club's Keeb YSWS and used the guide to build this project.
Features
- 3D Printed Case
- EC11 Rotary Encoder for volume control; press down to mute/unmute your mic.
- 104 Akko V3 Pro Cream Blue 5-pin Switches
- Uses an I/O expander
- Custom PCB
- 6-degree angle to make typing easier
- USB-C Wired Connection
CAD Model
Built to be assembled using 16 M2 screws and brass heat-set inserts. 3 separate parts: the plate for the switches,
the bottom frame, and the top frame. It is further split into 3 parts for the bottom frame, 3 parts for the plate, and 4 parts for the top frame. This allows the parts to be 3D printed.
PCB
Custom PCB Made in KiCad. Some footprints and schematics were from marbastlib.
Firmware
This keyboard uses QMK Firmware (written in C). It has a custom matrix scanning algorithm to use an I/O expander which communicates over SPI protocol.
- Rotary encoder changes volume
- Rotary encoder push button mutes/unmutes mic.
Bill of Materials (BOM)
Here is everything that you will need to make the keyboard: Click here
Thank you and Credits
Thank you for reading this. I would like to credit @aahan-1105 for helping me throughout this process and for introducing me to this project.
Parts
222| Qty | Value | Footprint | References |
|---|---|---|---|
| 105 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D10, D11, D12, D13, D14, D15, D16, D17, D18, D100, D101, D102, D103, D104, D105 +89 |
| 104 | SW_Push_45deg | PCM_marbastlib-mx:SW_MX_HS_CPG151101S11_1u | SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW100, SW101, SW102, SW103, SW104, SW105 +88 |
| 4 | MX_stab | PCM_marbastlib-mx:STAB_MX_P_2u | S1, S2, S6, S7 |
| 2 | MX_stab | PCM_marbastlib-mx:STAB_MX_P_2.25u | S3, S5 |
| 1 | C-0.1uF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C1 |
| 1 | LOGO | LOGO | G*** |
| 1 | MCP23S17x-x-SO | Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm | U1 |
| 1 | MX_stab | PCM_marbastlib-mx:STAB_MX_P_2.75u | S4 |
| 1 | MX_stab | PCM_marbastlib-mx:STAB_MX_P_6.25u | S8 |
| 1 | RaspberryPi_Pico | Module:RaspberryPi_Pico_Common_Unspecified | A1 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW1 |
Similar boards
- 2 layers25.4 × 33 mm
Pegboard
vsfteam/vsf
Versaloon Software Framework -- a tiny preemptive-capable event-driven incremental software framework for embedded systems
222 parts341Apache-2.0 - 2 layers364.4 × 167.3 mm
- 2 layers176 × 189.6 mm
8x8
miliar/saiboard
An open-source, wooden electronic Go board that integrates with KataGo.
222 parts48GPL-3.0 - 2 layers100 × 100 mm
- 2 layers100 × 100 mm
Zxuno1010
UzixLS/zxuno1010-board
10x10cm PCB variant of ZX-UNO project for G738/G706 enclosure
222 parts23MIT - 2 layers340.5 × 144 mm
- 2 layers236 × 128 mm
TrebleSynth
profdc9/TrebleSynth
A Raspberry Pi Pico miniature synth keyboard inspired by analog keyboard with analog controls and MIDI
222 parts11
Questions
How big is the CustomKeyboard Simplified PCB?
It measures 439 × 134 mm and has 2 copper layers, 1.6 mm thick.
What parts does the CustomKeyboard Simplified use?
222 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the CustomKeyboard Simplified KiCad files?
From the anvaymathur/CustomKeyboard-1 repository on GitHub, at the commit this page was made from: the board is KiCad/CustomKeyboard-Simplified.kicad_pcb and its schematic KiCad/CustomKeyboard-Simplified.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CustomKeyboard Simplified design in my own project?
Its repository states no licence, so its author keeps all rights: ask anvaymathur before reusing the design.