2 layers142.5 × 106.4 mm
2 layers87 × 120 mm
- Size
- 87 × 120 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 34
- Nets
- 32
- Pads
- 122
- Tracks, vias
- 212, 10
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 22 Oct 2026
- Updated
- 29 Oct 2026
Overview
MIDI is an open-source printed circuit board by Cryptoblade9623, from the Cryptoblade9623/MIDI-Macropad repository on GitHub. It is a 2-layer board of 87 × 120 mm with 34 parts on 32 nets, routed with 212 tracks and 10 vias.
Its parts include 12 diodes, 7 switches, 1 IC and 1 connector. It belongs with the audio and music boards and the ESP32 boards of this library.
README
README.mdMIDI-Macropad
A MIDI macropad with 6 mechanical switches, per-key RGB, a rotary encoder and 7 capacitive touch keys.
It is powered using a 2000mah battery and a TP4056 module. It is controlled by a Waveshare ESP32-S3-Zero. It can turn on and off using a rocker switch.
This is a project for Half-Life at Hack club. This project's guide was made by Kai Pereira.
I have made my adjustments from the original project like adding more switches, more LEDs, making a themed case and making it battery powered.
As I already have the keycaps and rocker switches and I will buy the lights and case myself, I will not include them in the Half-Life BOM, but they will be located in the readme for anyone who wants to make it from scratch.
The files will include all 3D models used ( 3D printed parts and separate models online that i used for designing ), KiCad files and firmware.
I tried to write as much code as I could without the use of LLMs and I almost finished but I had to use AI to code the capacitive touch keys section because I couldn't find documentation for that anywhere.
Everything but the capacitive touch keys section is code written/typed by hand.
The images below are screenshots of: what the project should look like after finished, PCB 3D models, offboard wired components, KiCad PCB and KiCad schematics in that order.
Parts
34| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | LOGO | Crypto:Quaver | G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G***, G*** |
| 6 | D | Diode_SMD:D_SOD-123 | D7, D8, D9, D10, D11, D12 |
| 6 | LED | marbastlib-mx:LED_MX_6028R | D1, D2, D3, D4, D5, D6 |
| 6 | SW_Push | marbastlib-mx:SW_MX_HS_CPG151101S11_1u | SW1, SW2, SW3, SW4, SW5, SW6 |
| 1 | Conn_01x07_Pin | Crypto:Capacitive_PADS_7_25mm | J1 |
| 1 | LOGO | Starbie:Half Life Logo | G*** |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW7 |
| 1 | Waveshare ESP32-S3-ZERO | Hackclub Footprints:Waveshare ESP32-S3-Zero | U1 |
Questions
How big is the MIDI PCB?
It measures 87 × 120 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MIDI use?
34 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the MIDI KiCad files?
From the Cryptoblade9623/MIDI-Macropad repository on GitHub, at the commit this page was made from: the board is Files/KiCad/MIDI.kicad_pcb and its schematic Files/KiCad/MIDI.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MIDI design in my own project?
Its repository states no licence, so its author keeps all rights: ask Cryptoblade9623 before reusing the design.
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