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Split mini

tamago324·split-mini·rev0.02/split-mini/split-mini.kicad_pcb

Split mini PCB layout, top view — open source RP2040/RP2350 board by tamago324
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About the Split mini PCB

Split mini is an open source RP2040/RP2350 PCB design by tamago324, published on GitHub. It is a 2-layer board measuring 99.8 × 83.7 mm, with 38 components from 5 distinct parts.

Its main chip is the Seeed Studio XIAO SAMD21, from the RP2040/RP2350 family. By type, the board carries 18 switches, 18 diodes, 1 IC and 1 connector.

It belongs with the keyboards designs in this gallery.

From the project

36 key split keyboard

XIAO RP2040 を使用 KLE https://kbplate.ai03.com/ でプレートデータを作成 width: 16.5 * height: 17.5

左右分割キーボード 狭ピッチ キーキャップは専用のものを使う (底面が16mmのやつを使うことにする) 親指は Choc もつけられる

Split mini, from the project README
From the project README

Main components on the Split mini

Seeed Studio XIAO SAMD21

Split mini bill of materials (BOM)

38 components, 5 distinct parts.

QtyPartRefs
1
Seeed Studio XIAO SAMD21
U1
1
MJ-4PP-9
J1
15
SW_PUSH
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +7
3
SW_PUSH
SW16, SW17, SW18
18
D
D1, D2, D3, D4, D5, D6, D7, D8 +10

Split mini design files

The KiCad project lives in the tamago324/split-mini repository on GitHub; these links point at the commit this page was built from.

Split mini: common questions

What microcontroller does the Split mini use?

The Split mini is built around the Seeed Studio XIAO SAMD21, from the RP2040/RP2350 family.

How big is the Split mini PCB?

The Split mini measures 99.8 × 83.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Split mini?

38 components, from 5 distinct parts. The full bill of materials is listed on this page.

Where can I download the Split mini design files?

From the tamago324/split-mini repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Split mini design in my own project?

The repository has no license, so all rights stay with tamago324. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Split mini 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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