EerieEyes is a fairly simple circuit that, when turned on and put in the dark provides an eerie pair of eyes staring out from the darkness. We’re certainly not the first people to have this idea, but we’re pretty sure that we’re the first to build one on an AVR, and offer it up open source/open hardware.
We hope to be able to expand the firmware available here. Right now, EerieEyes blinks, and if you connect a Peizo or Vibrating motor up to the extension pads, it’ll buzz. There’s an ISP header available for onboard programming, and it also provides a breakout for all 5 GPIO pins.