HardLabs

Modubu

yuburoll·modubu·kicad/modubu.kicad_pcb

Modubu PCB layout, top view — open source RP2040/RP2350 board by yuburoll

About the Modubu PCB

Modubu is an open source RP2040/RP2350 PCB design by yuburoll, published on GitHub under the MIT license. It is a 2-layer board measuring 100 × 92 mm, with 41 components from 4 distinct parts.

Its main chip is the RP2040-Zero, from the RP2040/RP2350 family. By type, the board carries 19 switches, 19 diodes, 2 connectors and 1 IC.

It belongs with the keyboards designs in this gallery.

From the project

semi-staggered 38 key split keyboard under 100x100mm pcb

semi-staggered(half row staggered, half column staggered) 38 key split keyboard under 100x100mm PCB

The name "modubu" is tofu square in Korean.

Started idea on my old sketch and KeeNoard, finished and polished the idea thanks to the great DYA Dash.

(Really surprisingly, I made this similar layout when I don't know about DYA Dash.)

credit for 우주신제품(wujusinjepum), the anonymous who named this keyboard.

Modubu, from the project README
From the project README

Main components on the Modubu

RP2040-Zero

Modubu bill of materials (BOM)

41 components, 4 distinct parts.

QtyPartRefs
1
RP2040-Zero
U1
2
AudioJack4
J1, J2
19
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +11
19
D
D1, D2, D3, D4, D5, D6, D7, D8 +11

Modubu design files

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

Modubu: common questions

What microcontroller does the Modubu use?

The Modubu is built around the RP2040-Zero, from the RP2040/RP2350 family.

How big is the Modubu PCB?

The Modubu measures 100 × 92 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Modubu?

41 components, from 4 distinct parts. The full bill of materials is listed on this page.

Where can I download the Modubu design files?

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

Can I use the Modubu design in my own project?

Yes, under the terms of its MIT license, which yuburoll chose for the repository.

Can I test firmware for the Modubu 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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