A few of us in the labs dabble in hardware hacking, and we were all pretty excited by the debut of the Raspberry Pi. So when we saw that MAKE Magazine was running a contest for creative uses of the Pi, we figured we'd better enter. As it happens, I had picked up a handsome vintage voltmeter at Uncommon Objects during a recent trip to Austin, and had been toying with the idea of making it Pi-enabled. With this competition for inspiration I decided to take the plunge.