HardLabs

Chocolate keyboard

DinosaurPotato534·chocolate-keyboard·pcb/keyboard.kicad_pcb

Chocolate keyboard PCB layout, top view — open source RP2040/RP2350 board by DinosaurPotato534

About the Chocolate keyboard PCB

Chocolate keyboard is an open source RP2040/RP2350 PCB design by DinosaurPotato534, published on GitHub. It is a 2-layer board measuring 389.2 × 209.8 mm, with 218 components from 11 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. Other key parts include the PCA9506BS. By type, the board carries 116 switches, 100 diodes and 2 ICs.

It belongs with the keyboards designs in this gallery.

From the project

I chose the name "Chocolate" as a joke based upon one of my friends keyboards, "Cacao".

I chose the name "Chocolate" as a joke based upon one of my friends keyboards, "Cacao".

This keyboard features a raspberry pi pico, diodes, a GPIO expander, cherry mx switches, and 16 rotary encoders.

Chocolate keyboard, from the project README
From the project README

Main components on the Chocolate keyboard

PicoPCA9506BS

Chocolate keyboard bill of materials (BOM)

218 components, 11 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
Pico
U1
1
PCA9506BS
U3
87
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +79
3
SW_Push
SW29, SW99, SW100
2
SW_Push
SW30, SW43
2
SW_Push
SW44, SW69
2
SW_Push
SW56, SW57
3
SW_Push
SW58, SW70, SW71
1
SW_Push
SW72
16
RotaryEncoder
SW101, SW102, SW103, SW104, SW105, SW106, SW107, SW108 +8
100
D
D1, D2, D3, D4, D5, D6, D7, D8 +92

Chocolate keyboard design files

The KiCad project lives in the DinosaurPotato534/chocolate-keyboard repository on GitHub; these links point at the commit this page was built from.

Chocolate keyboard: common questions

What microcontroller does the Chocolate keyboard use?

The Chocolate keyboard is built around the Pico, from the RP2040/RP2350 family.

How big is the Chocolate keyboard PCB?

The Chocolate keyboard measures 389.2 × 209.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Chocolate keyboard?

218 components, from 11 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 Chocolate keyboard design files?

From the DinosaurPotato534/chocolate-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 Chocolate keyboard design in my own project?

The repository has no license, so all rights stay with DinosaurPotato534. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Chocolate 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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