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 at Disney Research and writes for Make and Boing Boing. He is training for American Ninja Warrior. You can find him at and twitter @johnedgarpark — if you like that sort of thing.