So new to the arduino world. Background is, run a Christmas light display. It is a computer based controller that turn on and off 120v outlets. We are looking to add an animatronic aspect controlled by an arduino. I see potentially two options, just not sure on which is easier or better option.
have computer send 120v signal to trigger arduino input. I understand that arduino cannot accept 120v on the input pins. So would have to reduce volts down, somehow.
have arduino plugged into outlet from computer system. Computer system turns on outlet> powering up arduino > arduino triggers events on startup.
Any help is appreciated.