HardLabs

Sha MX

skarrmann·sha·kicad/mx/sha-mx.kicad_pcb

Sha MX PCB layout, top view — open source RP2040/RP2350 board by skarrmann

About the Sha MX PCB

Sha MX is an open source RP2040/RP2350 PCB design by skarrmann, published on GitHub under the MIT license. It is a 2-layer board measuring 266 × 76 mm, with 101 components from 3 distinct parts.

Its main chip is the RP2040-Zero, from the RP2040/RP2350 family. By type, the board carries 50 switches, 50 diodes and 1 IC.

It belongs with the keyboards designs in this gallery.

From the project

50 key ortholinear keyboard with self-encasing PCB.

Sha is a 50 key ortholinear keyboard, powered by either a Waveshare RP2040-Zero or Waveshare RP2040-Matrix.

gerbers: Gerber files for PCB manufacturing graphics: Source assets for PCB silkscreen kicad: KiCad project files (schematics and PCB designs) kicad-libraries: KiCad components and footprints images: Images for project documentation firmware: Firmware files

Sha MX, from the project README
From the project README

Main components on the Sha MX

RP2040-Zero

Sha MX bill of materials (BOM)

101 components, 3 distinct parts.

QtyPartRefs
1
RP2040-Zero
U1
50
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +42
50
D
D1, D2, D3, D4, D5, D6, D7, D8 +42

Sha MX design files

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

Sha MX: common questions

What microcontroller does the Sha MX use?

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

How big is the Sha MX PCB?

The Sha MX measures 266 × 76 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Sha MX?

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

Where can I download the Sha MX design files?

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

Can I use the Sha MX design in my own project?

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

Can I test firmware for the Sha MX 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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