I've got a strange setup:
Background: I'm building a wireless binary transmitter with a couple of low powered CB radios. I've re-soldered the activator button and microphone on one; that sends two different tones (1500hz for 1, 1000hz for 0); this end of the setup runs beautifully with my Arduino.
My issue is with the receiving end: I've tried reading directly from the speaker pins using analogRead, but can't see any difference in the values from before the sounds are received, to after.
My question: how can I patch my way into the speaker on the second CB to Arduino so that I can read the tone/pitch value?
Sort of what I have:
simulate this circuit – Schematic created using CircuitLab