Save for the Arduino Nano, it requires pretty basic electronic ... On the software end, the Arduino code is pretty simple, ...

Although a “CommsLink” module providing an RS-232 port was available back in the day, it’s become hard to find, inspiring [James] to design a completely new module based on an Arduino Nano.

The extra lines of code can also interfere with how your ... that the debugger probes are only required for MKR and Nano ...