HardLabs

Mechmidi1

konsumer·mechmidi1·kicad/mechmidi1.kicad_pcb

Mechmidi1 PCB layout, top view — open source RP2040/RP2350 board by konsumer

About the Mechmidi1 PCB

Mechmidi1 is an open source RP2040/RP2350 PCB design by konsumer, published on GitHub. It is a 2-layer board measuring 84.5 × 126.3 mm, with 81 components from 9 distinct parts.

Its main chip is the RP2040_Zero, from the RP2040/RP2350 family. By type, the board carries 22 switches, 21 LEDs, 20 diodes, 1 IC and 1 connector.

It belongs with the keyboards and audio designs in this gallery.

From the project

A versatile USB/classic MIDI controller/sequencer and USB macro-keyboard

You should install these 2 libs, if you want to edit things:

Main components on the Mechmidi1

RP2040_Zero

Mechmidi1 bill of materials (BOM)

81 components, 9 distinct parts.

QtyPartRefs
1
RP2040_Zero
U1
1
interface
J3
20
Keyswitch
S1, S2, S3, S4, S5, S6, S7, S8 +12
1
ROT0
SW1
1
ROT1
SW2
16
TestPoint
T_G1, T_G2, T_G3, T_G4, T_G5, T_G6, T_G7, T_G8 +8
20
WS2812B-2020
LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +12
1
128x64
OLED1
20
1N148
D1, D2, D3, D4, D5, D6, D7, D8 +12

Mechmidi1 design files

The KiCad project lives in the konsumer/mechmidi1 repository on GitHub; these links point at the commit this page was built from.

Mechmidi1: common questions

What microcontroller does the Mechmidi1 use?

The Mechmidi1 is built around the RP2040_Zero, from the RP2040/RP2350 family.

How big is the Mechmidi1 PCB?

The Mechmidi1 measures 84.5 × 126.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mechmidi1?

81 components, from 9 distinct parts. The full bill of materials is listed on this page.

Where can I download the Mechmidi1 design files?

From the konsumer/mechmidi1 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Mechmidi1 design in my own project?

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

Can I test firmware for the Mechmidi1 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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