Custom keyboard

HACKERHSB1453·custom_keyboard·my-kkeb/my-kkeb.kicad_pcb

About the Custom keyboard PCB

Custom keyboard is an open source RP2040/RP2350 PCB design by HACKERHSB1453, published on GitHub. It is a 2-layer board measuring 178.2 × 127.1 mm, with 267 components from 15 distinct parts.

Its main chip is the RaspberryPi_Pico, from the RP2040/RP2350 family. Other key parts include the MCP23017X-X-SO and ER_OLEDM0.91_1X-I2C. By type, the board carries 113 diodes, 10 resistors, 8 connectors, 8 capacitors, 7 ICs and 7 switches.

It belongs with the keyboards designs in this gallery.

From the project

A 113-key modular mechanical keyboard, split into 5 boards that connect with magnetic pogo pins. It is designed in KiCad (PCB) and Fusion (case) for Hack Club's KEEB program.

1. PCBs: upload each zip from my-kkeb/export/fab/ to JLCPCB as a separate order (5 boards). 2. Case: print the Case and Plate files from case/. I plan to use JLC3DP in black resin. 3. Parts: see bom.csv 4. Firmware: not done yet

Custom keyboard, from the project README — From the project README

Main components on the Custom keyboard

MCP23017X-X-SO ER_OLEDM0.91_1X-I2C RaspberryPi_Pico

Custom keyboard bill of materials (BOM)

267 components, 15 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
4	MCP23017X-X-SO MCP23017x-x-SO	SOIC-28W_7.5x17.9mm_P1.27mm	U1, U2, U3, U4
3	ER_OLEDM0.91_1X-I2C ER_OLEDM0.91_1x-I2C	ER_OLEDM0.91_1x-I2C	U5, U6, U7
1	RaspberryPi_Pico	RaspberryPi_Pico_Common_Unspecified	A1
3	CONN_01X04 Conn_01x04	PogoMag_1x04_P2.54mm_RightAngle_Mirror	J3, J6, J7
3	CONN_01X04 Conn_01x04	PogoMag_1x04_P2.54mm_RightAngle	J4, J8, J9
1	Type_C	USB_C_Receptacle_HRO_TYPE-C-31-M-12_4Pin_Fixed	J5
1	TypeC	USB_C_Receptacle_HRO_TYPE-C-31-M-12_4Pin_Fixed	J11
113	MX_SW_HS	SW_MX_HS_CPG151101S11_1u_PinSwap	MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +105
3	MX_stab	STAB_MX_P_2u	S1, S3, S5
4	RotaryEncoder_Switch	ROT_Alps_EC11E-Switch	SW1, SW2, SW3, SW4
113	1N4148	D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2, D3, D4, D5, D6, D7, D8 +105
4	100NF 100nF	C_0603_1608Metric	C1, C3, C5, C7
4	10UF 10uF	C_0805_2012Metric	C2, C4, C6, C8
2	2.2K 2.2k	R_0603_1608Metric	R1, R2
8	100	R_0603_1608Metric	R3, R4, R7, R8, R9, R10, R11, R12

Custom keyboard design files

The KiCad project lives in the HACKERHSB1453/custom_keyboard repository on GitHub; these links point at the commit this page was built from.

Custom keyboard: common questions

What microcontroller does the Custom keyboard use?

The Custom keyboard is built around the RaspberryPi_Pico, from the RP2040/RP2350 family.

How big is the Custom keyboard PCB?

The Custom keyboard measures 178.2 × 127.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Custom keyboard?

267 components, from 15 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Custom keyboard design files?

From the HACKERHSB1453/custom_keyboard repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Custom keyboard design in my own project?

The repository has no license, so all rights stay with HACKERHSB1453. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Custom keyboard without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.