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USB controlled relay withou µC?

Hello everybody, I've seen many posts about people who made a remote control switch with a microcontroller. My question is simple but the answer is possible not easy: can you remote control a switch by PC without using a microcontroller?

NachoMahma6 years ago
. Yes. One method is to use a serial port to drive a transistor and/or relay - see RS-232, serial communication, serial port, &c.