xmas-box: Arduino/ioBridge internet controlled Christmas lights and music show

Step 5 FM Transmitter

I was hoping to find a Belkin TuneCast II since I have found a lot of information online (including this instructable) but I had to settle with the PPA Digital FM Transmitter and it worked out pretty well! The only modifications I had to do were to desolder the stereo mini plug and connect 2 wires coming from the WAVE shield speaker output and desolder the mini barrel plug to connect power directly from the Arduino.

I'm powering the FM transmitter with the 5v coming out from the Arduino. This would probably not be a good idea if I was powering the Arduino with a 9v battery but since I'm using a wall wart I'm not too concerned.

I am bypassing the ON/OFF switch by connecting a 2N2222 transistor connected to a 10k resistor coming from a digital output from the Arduino. To turn on I just send a fast HIGH/delay/LOW and that's all I need to start the FM transmitter.

I also soldered a wire as an antenna to the ground of the battery power pin.