MAKE flickr photo pool member Zapwizard writes “I don’t have enough money or time to replace my headunit, or buy the Radioshark. So instead I am integrating a iTrip FM transmitter directly into the Mini. The iTrip was wired up, I choose to wire it to +5volts from the USB, as I couldn’t find a reliable source of 3.3volts. A dummy headphone jack allows the iTrip to turn on. Later when I replace my headunit I can just jack into the headphone jack and get straight audio.” Link.