I want monitoring working copuple water pump with arduino. ( input high or low ) Water pump runing on 220V, arduino input is 5V.
I know the couple options but I was wondering if there any smaller and cheaper components to get from 220V to 5V signal.
- First, of course, relay but I held it for several hours days :confused:
- Second 220V led signal bulb and light sensors, maybe little converter 220V to 5V :o :)
Is there any opto coupler 220V.. probably not
Thanks for your ideas