@lom You can declare global variables in the space outside of functions. Variables declared inside of a function are only visible until the end of the...

Welcome. Starting in the late 70s, I have programmed in several assemblers (6800, 8080/Z80, 8086, PDP-8, PDP-11, VAX), BASIC, FORTRAN, COBOL, Pascal, ...

I just took a closer look at these diodes. The anode should have a longer lead. The cathode should be on the flat side of the diode. These have the fl...

Never mind. Looks like I had the diode in backwards. I thought I had tried turning it before.

Welcome! I am also hoping my grandchildren might get an interest in some of this stuff. I think at least one of them is interested in robotics. He's a...

I also think it's a useful project. I've been thinking about setting up an ESP32 as a hub of sorts to communicate with sensors and controllers using E...