On the electronics and interfacing side of things, [John] utilises the Arduino pro micro for its copious analog inputs and USB functionality. A nice feature of this board is that it’s based on ...

Once you’ve got your stencil ready to go, you can combine it with a 3D printed jig to hold the PCB while you apply the solder paste.

Those include tutorials for the Arduino Nano, Raspberry Pi Pico, and Micro:bit boards. However, if you’re done with this part, the company says the CrowPi 3 supports Raspberry Pi OS, Ubuntu, CentOS, ...