This weekend I whipped up a breakout board for the Raspberry Pi. The RPio bidirectionally level-shifts the GPIO pins between their 3.3-volt level and a more hobbyist-friendly 5 volts. It also provides more 3.3-volt power than the meager 50mA provided from the RPi’s expansion header. My own Raspberry Pi order isn’t due to be fulfilled until the late Spring, so I’m in no great big hurry to build my own. But if you’re interested in getting one, please let me know.