If you are looking to build a macropad with 9 mechanical switches and a raspberry pi pico inside this is the case you need. The design is a remix of VOID9 Macropad (based on the pro micro) and the Pico Armour case.

I've printed it myself and it fits perfectly, details for this build, instructions on how to set up the Pi Pico and the code itself are available from my blog: [http://blog.4dcu.be/diy/2021/04/05/Macropad.html](http://blog.4dcu.be/diy/2021/04/05/Macropad.html)

More recently I've also programmed it as a MIDI device, if that is something you want to play with check out this post

Other items required:

• 9x Mechanical switch (tested with Gateron and Kailh)
• 9x 1.8 mm Led (optional)
• 9x 82 Ohm Resistor (optional)
• a set of suited keycaps (e.g. numerical keys)
• 1x Raspberry Pi Pico, with CircuitPython
• 4x M3 bolt (1 cm)
• Wire
• Soldering equipment: Iron, solder and a third-hand tool
• Hot Glue Gun