I use it as an easy voltage tester for various hardware projects. I wrote an app that can do GPIO input (the built in only does output) so I can check which par

I use it as an easy voltage tester for various hardware projects. I wrote an app that can do GPIO input (the built in only does output) so I can check which parts of a given circuit I'm building are high or low at a given time. Basically like a parallel multimeter.