2 layers304.8 × 116.3 mm
2 layers290 × 112 mm
Keyboard-75percent v1
Baigel/Keyboard-PCBA collection of PCB keyboards that run QMK
- Size
- 290 × 112 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 280
- Nets
- 291
- Pads
- 1,212
- Tracks, vias
- 0, 0
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 3 Mar 2026
- Updated
- 6 Mar 2026
Overview
Keyboard-75percent v1 is an open-source printed circuit board by Baigel, from the Baigel/Keyboard-PCB repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 290 × 112 mm with 280 parts on 291 nets.
It is built around the ATMEGA32U4-AU and SK6812-EC20. Its parts include 84 diodes, 84 inductors, 71 switches, 11 resistors and 7 capacitors. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATMEGA32U4-AU
QFP-44(10x10)-40℃~+85℃ 10bit 16MHz 1KB 2.5KB 2.7V~5.5V 26 32KB 8 Bit AVR Built-in FLASH QFP-44(10x10) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
SK6812-EC20
SMD,2x2mm-40℃~+80℃ 0.65mA 0.65mm 100mcd~200mcd 160mcd~320mcd 160° 1kHz 2000V 2mm 2mm 3.7V~5.5V 460nm~475nm 50mcd~100mcd 520nm~535nm 620nm~630nm 800Kbit/s Built-in power-on reset circuit、Built-in one-way transmission function Semi-transparent lens SMD,2x2mm RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
README
README.mdKeyboard-PCB
A collection of PCB keyboards that run QMK - all in various states of completion
Changes to Make
To PCBs
- Oscillator to C122519
- Oscillator Load Caps to 20pF (including lcsc)
- Fix LEDs LCSC code to be correct (make sure it is C5149201)
- CC pins on USB C should be 5.1k
- Add lcsc C5156480 to sockets
- USB C to C2927038
- Change all diodes to C5345962
- Make sure Ctrl then Win then Alt
- Change Fn to Win
To Firmware:
- Add separate firmware for different boards where relevatn
- Add MacOS firmware versions
Parts
280| Qty | Value | Footprint | References |
|---|---|---|---|
| 84 | 1N4148 | 1N4148W-7:SOD3715X135N | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +68 |
| 84 | SK6812-E | SK6812-E:LED_SK6812-E | L1, L2, L10, L11, L12, L13, L14, L15, L16, L17, L18, L19, L20, L21, L22, L23 +68 |
| 7 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R5, R7, R8, R9, R10, R11 |
| 3 | 1uF | Capacitor_SMD:C_0805_2012Metric | C2, C4, C5 |
| 2 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C1, C3 |
| 2 | 20pF | Capacitor_SMD:C_0805_2012Metric | C6, C7 |
| 2 | 22R | Resistor_SMD:R_0805_2012Metric | R2, R3 |
| 2 | 5.1k | Resistor_SMD:R_0805_2012Metric | R4, R6 |
| 2 | Alt | Switch:Kailh_socket_MX | SW76, SW79 |
| 2 | Ctrl | Switch:Kailh_socket_MX | SW75, SW81 |
| 2 | Shift | Switch:Kailh_socket_MX | SW61, SW72 |
| 1 | '" | Switch:Kailh_socket_MX | SW58 |
| 1 | ,< | Switch:Kailh_socket_MX | SW69 |
| 1 | -_ | Switch:Kailh_socket_MX | SW28 |
| 1 | .> | Switch:Kailh_socket_MX | SW70 |
| 1 | /? | Switch:Kailh_socket_MX | SW71 |
| 1 | 0 | Switch:Kailh_socket_MX | SW27 |
| 1 | 1 | Switch:Kailh_socket_MX | SW18 |
| 1 | 16MHz | Crystal:Crystal_SMD_5032-2Pin_5.0x3.2mm_HandSoldering | Y1 |
| 1 | 2 | Switch:Kailh_socket_MX | SW19 |
| 1 | 3 | Switch:Kailh_socket_MX | SW20 |
| 1 | 4 | Switch:Kailh_socket_MX | SW21 |
| 1 | 5 | Switch:Kailh_socket_MX | SW22 |
| 1 | 500mA | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | F1 |
| 1 | 6 | Switch:Kailh_socket_MX | SW23 |
| 1 | 7 | Switch:Kailh_socket_MX | SW24 |
| 1 | 8 | Switch:Kailh_socket_MX | SW25 |
| 1 | 9 | Switch:Kailh_socket_MX | SW26 |
| 1 | ;: | Switch:Kailh_socket_MX | SW57 |
| 1 | =+ | Switch:Kailh_socket_MX | SW29 |
| 1 | A | Switch:Kailh_socket_MX | SW48 |
| 1 | ATMEGA32U4-AU | Atmega32U4:QFP80P1200X1200X120-44N | U1 |
| 1 | B | Switch:Kailh_socket_MX | SW66 |
| 1 | BkSp | Switch:Kailh_socket_MX | SW30 |
| 1 | C | Switch:Kailh_socket_MX | SW64 |
| 1 | Caps | Switch:Kailh_socket_MX | SW47 |
| 1 | D | Switch:Kailh_socket_MX | SW50 |
| 1 | Del | Switch:Kailh_socket_MX | SW16 |
| 1 | Down | Switch:Kailh_socket_MX | SW83 |
| 1 | E | Switch:Kailh_socket_MX | SW35 |
| 1 | ESC | Switch:Kailh_socket_MX | SW1 |
| 1 | End | Switch:Kailh_socket_MX | SW46 |
| 1 | Enter | Switch:Kailh_socket_MX | SW59 |
| 1 | F | Switch:Kailh_socket_MX | SW51 |
| 1 | F1 | Switch:Kailh_socket_MX | SW2 |
| 1 | F10 | Switch:Kailh_socket_MX | SW11 |
| 1 | F11 | Switch:Kailh_socket_MX | SW12 |
| 1 | F12 | Switch:Kailh_socket_MX | SW13 |
| 1 | F2 | Switch:Kailh_socket_MX | SW3 |
| 1 | F3 | Switch:Kailh_socket_MX | SW4 |
| 1 | F4 | Switch:Kailh_socket_MX | SW5 |
| 1 | F5 | Switch:Kailh_socket_MX | SW6 |
| 1 | F6 | Switch:Kailh_socket_MX | SW7 |
| 1 | F7 | Switch:Kailh_socket_MX | SW8 |
| 1 | F8 | Switch:Kailh_socket_MX | SW9 |
| 1 | F9 | Switch:Kailh_socket_MX | SW10 |
| 1 | Fn | Switch:Kailh_socket_MX | SW80 |
| 1 | G | Switch:Kailh_socket_MX | SW52 |
| 1 | GND | TestPoint:TestPoint_Pad_D2.0mm | TP2 |
| 1 | H | Switch:Kailh_socket_MX | SW53 |
| 1 | Home | Switch:Kailh_socket_MX | SW31 |
| 1 | I | Switch:Kailh_socket_MX | SW40 |
| 1 | J | Switch:Kailh_socket_MX | SW54 |
| 1 | K | Switch:Kailh_socket_MX | SW55 |
| 1 | L | Switch:Kailh_socket_MX | SW56 |
| 1 | Left | Switch:Kailh_socket_MX | SW82 |
| 1 | M | Switch:Kailh_socket_MX | SW68 |
| 1 | N | Switch:Kailh_socket_MX | SW67 |
| 1 | O | Switch:Kailh_socket_MX | SW41 |
| 1 | P | Switch:Kailh_socket_MX | SW42 |
| 1 | PgDn | Switch:Kailh_socket_MX | SW74 |
| 1 | PgUp | Switch:Kailh_socket_MX | SW60 |
| 1 | PrtSc | Switch:Kailh_socket_MX | SW14 |
| 1 | Q | Switch:Kailh_socket_MX | SW33 |
| 1 | R | Switch:Kailh_socket_MX | SW36 |
| 1 | Right | Switch:Kailh_socket_MX | SW84 |
| 1 | S | Switch:Kailh_socket_MX | SW49 |
| 1 | ScrLk | Switch:Kailh_socket_MX | SW15 |
| 1 | Space | Switch:Kailh_socket_MX | SW78 |
| 1 | Super | Switch:Kailh_socket_MX | SW77 |
The 261 most common of 280 parts.
More from Baigel/Keyboard-PCB
3- 2 layers305 × 116 mm
- 2 layers65.1 × 38 mm
Similar boards
- 4 layers81.2 × 96.6 mm
- 6 layers66 × 66 mm
PD240W kicad
theohg/PD240W
PD240W is a complete hardware and firmware project converting USB-C Power Delivery into a programmable 240W (48V 5A) bench power supply, featuring C++ code for Raspberry Pi Pico, custom PCB Gerbers, and a 3D-printable…
299 parts125 - 2 layers88.9 × 50.8 mm
BLDC BIZ CARD
ageppert/Brushless-Motor-Biz-Card
A brushless motor and driver built in to a business card form-factor for learning and experimenting!
82 parts38MIT - 2 layers233.2 × 147.7 mm
ErgoSHIFT rgb
mizma/ergoSHIFT
11 button leverless controller with shifted home position
84 parts19CC-BY-SA-4.0 - 2 layers154.5 × 105.5 mm
Seismos 5CoreStencil
ReSummit/Seismos
A split keyboard that evolves the concept of the Zebra keyboard, but fancier
100 parts18GPL-3.0 - 4 layers25.6 × 23.6 mm
CANNONBALL
user-will/PCB_CANNONBALL
An ESP32-C3 dev board with more sensors and features then you could know what to do with
61 parts14 - 2 layers108 × 55 mm
- 2 layers99 × 99 mm
Questions
How big is the Keyboard-75percent v1 PCB?
It measures 290 × 112 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Keyboard-75percent v1 use?
280 parts, built around the ATMEGA32U4-AU and SK6812-EC20. 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 Keyboard-75percent v1 KiCad files?
From the Baigel/Keyboard-PCB repository on GitHub, at the commit this page was made from: the board is 75 Percent Keyboard RGB v1/Keyboard-75percent-v1/Keyboard-75percent-v1.kicad_pcb and its schematic 60 Percent Keyboard v1/Keyboard-60percent-v1/Key_Switches.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keyboard-75percent v1 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).