Originally Posted by halstaff
The Tenda board gets its signal when you move the jumper from the download position which is the pin on the left and the center pin. Move the jumper to the center pin and the right pin for the signal to get to the audio board from pin0.
I didn't completely digest your reply at the beginning. Let me make sure I understand how it works in broad terms:
Your board has two modes: one for programming the PICAXE, the other for operation after you've programmed the PICAXE. The jumper on the board needs to change position depending on whether you are programming the PICAXE or not.
In the latter mode, the PIR input is used to take the PICAXE program out of the 'idle' state. It sends a command to the Tenda board to make it start playing a tune. This tune has one channel (the right one?) dedicated to the song that the user hears, and uses the other as a 'cue' channel going back to the PICAXE through the op-amp circuitry. When the PICAXE detects the cue on its pin 6 it will perform some action, such as using the servo output to make the jaw wiggle. After some time the PICAXE program goes back to the idle mode, waiting for the next trigger from the PIR connector.
Is this fairly close?