Todbot is at it again. Here’s a creepy, simple, and effective Halloween effect — a pair of glowing eyeballs that look back and forth at your victims. It’s made with two ping pong balls, two BlinkM programmable LEDs, three servomotors, and an Arduino microcontroller. Stick ti in a pumpkin, or better yet, incorporate it into your costume, and you’ve got maximum spookiness.

Head to the todbot blog for more info, and to download the Arduino sketch.

In the Maker Shed:



Arduino Duemilanove

Blinkm Row

BlinkM – Smart LED

John Edgar Park

John Edgar Park

John Edgar Park likes to make things and tell people about it. He works in CG animation at DisneyToon Studios and writes for Make, Boing Boing, and other places online and in print. You can find him at and twitter @johnedgarpark — if you like that sort of thing.