HardLabs

My keyboard

Axel-Jacobsen·my-keyboard·pcb/pcb.kicad_pcb

My keyboard PCB layout, top view — open source RP2040/RP2350 board by Axel-Jacobsen

About the My keyboard PCB

My keyboard is an open source RP2040/RP2350 PCB design by Axel-Jacobsen, published on GitHub. It is a 2-layer board measuring 386.1 × 84.1 mm, with 138 components from 8 distinct parts.

Its main chip is the RP2040-ZERO, from the RP2040/RP2350 family. By type, the board carries 64 switches, 64 diodes, 4 capacitors, 2 ICs, 2 connectors and 2 resistors.

It belongs with the keyboards and dev boards & breakouts designs in this gallery.

From the project

dont worry bout this keyboard

split keyboard, fun to make and fun to have

TODOs ===== [ ] swap to low profile keys [ ] expose scl, sda [ ] tighten up PCB

microcontroller =============== - connection type - wired - pros: no battery, simpler, would be fun to program bluetooth controller - cons: annoying while using - bluetooth: - pros: clean to use - cons: battery is annoying - decision - wired to start[0] - bluetooth will make the project more complicated than necessary - possible options - ATmega32U4 (widely used, looks small) - as raw IC mounted on the PCB (more complicated, so don't do) or as a "hat" on a breakout…

Main components on the My keyboard

RP2040-ZERO

My keyboard bill of materials (BOM)

138 components, 8 distinct parts.

QtyPartRefs
2
RP2040-ZERO
U1, U2
1
L to R
P1
1
R to L
P2
64
SW_SPST
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +56
64
1N5817
D1, D2, D3, D4, D5, D6, D7, D8 +56
2
100nF
C1, C3
2
10µF
C2, C4
2
4700
R1, R2

My keyboard design files

The KiCad project lives in the Axel-Jacobsen/my-keyboard repository on GitHub; these links point at the commit this page was built from.

My keyboard: common questions

What microcontroller does the My keyboard use?

The My keyboard is built around the RP2040-ZERO, from the RP2040/RP2350 family.

How big is the My keyboard PCB?

The My keyboard measures 386.1 × 84.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the My keyboard?

138 components, from 8 distinct parts. The full bill of materials is listed on this page.

Where can I download the My keyboard design files?

From the Axel-Jacobsen/my-keyboard repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

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

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

Can I test firmware for the My 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.

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