I'm attempting to build a circuit that will sense DC in a line, send a monopulse to a reciever to turn on a remote LED. Then when the DC is no longer present, the remote LED should turn off. The range is only about 6 ft. I'm trying to make this as small as possible. I'm familiar with electronics and wiring, but not the components necessary to make this happen.
New to PICS, currently attempting to figure it out. Do I need to have the pic plugged into a computer for the system to work? I understand they need to be programmed but once they are programmed do they stay with computer? Is there a good book out there that I can read to become less naive about microcontrollers.