HardLabs

Raft21

skksn1230·raft21·KiCad/raft21_PCB.kicad_pcb

Raft21 PCB layout, top view — open source RP2040/RP2350 board by skksn1230

About the Raft21 PCB

Raft21 is an open source RP2040/RP2350 PCB design by skksn1230, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 194.8 × 99.8 mm, with 22 components from 3 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. By type, the board carries 21 switches and 1 IC.

It belongs with the keyboards designs in this gallery.

From the project

Sokutaipu-style DIY keyboard compatible with the Stentura protocol for Japanese machine shorthand

Main components on the Raft21

Pico

Raft21 bill of materials (BOM)

22 components, 3 distinct parts.

QtyPartRefs
1
Pico
U2
4
SW_Push
SW1, SW8, SW14, SW21
17
SW_Push
SW2, SW3, SW4, SW5, SW6, SW7, SW9, SW10 +9

Raft21 design files

The KiCad project lives in the skksn1230/raft21 repository on GitHub; these links point at the commit this page was built from.

Raft21: common questions

What microcontroller does the Raft21 use?

The Raft21 is built around the Pico, from the RP2040/RP2350 family.

How big is the Raft21 PCB?

The Raft21 measures 194.8 × 99.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Raft21?

22 components, from 3 distinct parts. The full bill of materials is listed on this page.

Where can I download the Raft21 design files?

From the skksn1230/raft21 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Raft21 design in my own project?

Yes, under the terms of its GPL-3.0 license, which skksn1230 chose for the repository.

Can I test firmware for the Raft21 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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