Okay, I was thinking last night about a possible mod, and have some questions.My idea was to use an old VU meter or analog voltage meter as a processor usage meter to put on the front bezel of my ...

But [Jim’s] Python serial terminal (available in this git repository) allows you to specify multiple devices as command line arguments. You can even use wildcards to monitor every USB connection.

So I'm trying to detect through Visual Basic 6.0 when a voltage change occurs on one of the pins of the serial/parallel port. The whole thing is pretty simple; no data transfer/handshaking/etc ...