PC’s used to have RS-232 ports to connect things like mice, modems, printers, etc. Then technology moved on to USB. RS-232 had a maximum distance of 50′, and USB is 9′ (USB 3.0) to 16′ (USB 2.0). If you really need to send data a long distance, RS-422 might be the trick. It uses two … Continue reading Long Distance Serial with RS-422