Rob Reynolds over at SparkFun whipped up some singing skulls just in time for Halloween.

Inspired by a recent trip to Disney World and seeing animatronic magic, Rob grabbed a Teensy 3.6, an audio shield, and some plastic skulls and got to making. He created 4 solenoid circuits using mosfets to trigger the singing skulls.  To top it all off, googly eyes were added to the skulls, because googly eyes make everything better.