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2 layers220 × 97.5 mmMidi, the printed circuit board in 3D

this is for Half life week 3 where i learn how to turn circuts into sound by creating a Midi Keyboard

Size
220 × 97.5 mm
Copper layers
2
Thickness
1.6 mm
Parts
9
Nets
71
Pads
116
Tracks, vias
97, 0
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
22 Oct 2026
Updated
26 Oct 2026

Overview

Midi is an open-source printed circuit board by CtrlAltSleep, from the CtrlAltSleep/Midi-Keyboard repository on GitHub. It is a 2-layer board of 220 × 97.5 mm with 9 parts on 71 nets, routed with 97 tracks and 0 vias.

It belongs with the audio and music boards and the RP2040 boards of this library.

README

README.md

Midi-Keyboard

this is for Half life week 3 where i learn how to turn circuits into sound by creating a Midi Keyboard. this was made in KICad software and i designed it to be as simple as possible to understand for begginers

here are images people might find necessary to understand Screenshot_2026-10-25_16-53-18 Screenshot_2026-10-25_18-06-47 Screenshot_2026-10-25_18-28-17 Screenshot_2026-10-25_18-28-01

Parts

9
QtyValueFootprintReferences
8SW_PushButton_Switch_THT:SW_PUSH_6mm_H4.3mmSW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8
1RaspberryPi_PicoModule:RaspberryPi_Pico_Common_UnspecifiedA1

Questions

How big is the Midi PCB?

It measures 220 × 97.5 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Midi use?

9 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 CtrlAltSleep/Midi-Keyboard repository on GitHub, at the commit this page was made from: the board is midi.kicad_pcb and its schematic 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 CtrlAltSleep before reusing the design.

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