4 layers277.2 × 107.5 mm
Katia
ikajdan/katia
A split keyboard with 6 by 3 column staggered keys and 3 thumb keys, based on the Crkbrd design
230 parts33CERN-OHL-P-2.0
2 layers288.1 × 97.6 mm
Keyboard
cho0h5/keyboard61461-key mechanical keyboard
- Size
- 288.1 × 97.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 161
- Nets
- 120
- Pads
- 852
- Tracks, vias
- 907, 149
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 5 Nov 2025
- Updated
- 12 Dec 2025
Overview
Keyboard is an open-source printed circuit board by cho0h5, from the cho0h5/keyboard61 repository on GitHub. It is a 2-layer board of 288.1 × 97.6 mm with 161 parts on 120 nets, routed with 907 tracks and 149 vias.
It is built around the RP2040, W25Q128JVSIQ and ABM8-272-T3. Its parts include 62 switches, 61 diodes, 16 capacitors, 7 resistors and 3 ICs. It belongs with the keyboards and input boards and the RP2040 boards of this library.
Main components
3
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
ABM8-272-T3
SMD3225-4P-40℃~+85℃ 10pF 12MHz 50Ω SMD crystal oscillator ±30ppm ±30ppm SMD3225-4P Crystals ROHSAbraconCrystals
README
README.mdKeyboard Project
Schematic
PCB Layout
3D Rendering
Actual Photos
3D Models Used
- Cherry MX Switch: ConstantinoSchillebeeckx/cherry-mx-switch
- DSA Keycap: anhthang/dsa-keycap
Parts
161| Qty | Value | Footprint | References |
|---|---|---|---|
| 61 | D | Diode_SMD:Nexperia_CFP3_SOD-123W | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +45 |
| 46 | SW_Push | PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_Plated_1.00u | SW1, SW2, SW10, SW11, SW12, SW13, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23, SW24, SW25 +30 |
| 10 | 100n | Capacitor_SMD:C_0402_1005Metric | C19, C20, C21, C22, C23, C24, C25, C26, C27, C30 |
| 7 | SW_Push | PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_Plated_1.25u | SW54, SW55, SW56, SW58, SW59, SW60, SW61 |
| 2 | 10u | Capacitor_SMD:C_0805_2012Metric | C17, C18 |
| 2 | 15p | Capacitor_SMD:C_0402_1005Metric | C31, C32 |
| 2 | 1k | Resistor_SMD:R_0402_1005Metric | R11, R12 |
| 2 | 1u | Capacitor_SMD:C_0402_1005Metric | C28, C29 |
| 2 | 27 | Resistor_SMD:R_0402_1005Metric | R8, R9 |
| 2 | 5K1 | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | SW_Push | PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_Plated_1.50u | SW15, SW28 |
| 2 | SW_Push | PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_Plated_2.25u | SW41, SW42 |
| 1 | ABM8-272-T3 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y2 |
| 1 | DNF | Resistor_SMD:R_0402_1005Metric | R10 |
| 1 | NCP1117-3.3_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | RP2040 | RP2040_minimal:RP2040-QFN-56 | U6 |
| 1 | SW_Push | PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_Plated_6.25u | SW57 |
| 1 | SW_Push | PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_Plated_2.75u | SW53 |
| 1 | SW_Push | PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_Plated_2.00u | SW14 |
| 1 | SW_Push | PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_Plated_1.75u | SW29 |
| 1 | SW_SPST | Button_Switch_SMD:SW_SPST_SKQG_WithoutStem | SW62 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4085 | J2 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U5 |
The 151 most common of 161 parts.
Questions
How big is the Keyboard PCB?
It measures 288.1 × 97.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Keyboard use?
161 parts, built around the RP2040, W25Q128JVSIQ and ABM8-272-T3. 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 KiCad files?
From the cho0h5/keyboard61 repository on GitHub, at the commit this page was made from: the board is kicad/keyboard.kicad_pcb and its schematic kicad/keyboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keyboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask cho0h5 before reusing the design.
Similar boards
- 4 layers51.8 × 20 mm
Sample target
alvarop/swd2usbc
Have you ever wanted to debug your device over USB-C? Sometimes there's not enough room for a JTAG/SWD connector, or even Tag-Connect pads!
57 parts29CC0-1.0 - 4 layers61.8 × 79.6 mm
- 4 layers40 × 58.5 mm
- 2 layers174 × 111 mm
Pedalboard hw
pedalboard/pedalboard-hw
pedalboard audio midi processor open hardware
169 parts14CERN-OHL-P-2.0 - 2 layers110 × 52 mm
- 2 layers62 × 47 mm
- 2 layers100 × 86 mm
Deflection amp 3
Thinkpad4by3/chibitron
Electrostatic CRT driver designed from the ground up for performance, versatility and ease-of-manufacturability
202 parts6