https://forum.arduino.cc/t/detecting-when-power-is-on-to-a-record-player/220284
detecting when power is on, to a record player. - General Electronics - Arduino Forum
Mar 17, 2014 - Hi I have a record player that when I turn it on the arduino is aware, I will then transmit IR codes to my reciever mute TV etc. But I am at a loos what device...
power is on