Introduction - If you have any usage issues, please Google them yourself
Than 8 switch outputs Port B of the PIC18F2550 is used. Power gets the circuit from the USB port. Power supply is separate from the microcontroller and the computer galvanically. switching signals USB socket intended as a virtual serial port COM4. To turn on the first load, send “E1″ to turn off “A1″ This can be done with any terminal program. Or even easier with a BAT file. ECHO E3> COM4 This turn of the third load.