Is there some simple circuit I can build to just broadcast whatever RF I want useing something like a 555 Timer, some resistors, pots, capacitors, random coil of wire, etc?
And is there an easy way to pick it up and have the MCU do something when it picks up on that RF?
I dont even care if it carries actual data(yet!) I just want to output and pick up on a freq for now... any help? links perhaps?