Halloween

Flashback: Haunted House Controller

Flashback: Haunted House Controller

For the last 12 years, I’ve been perfecting my technique of scaring kids. This project shows you how to build a tool I use in my haunted houses: a relay board that switches on electrical devices in time to an audio file that’s playing on a laptop, connected via parallel port. Using this setup, you can write code that synchronizes lights, motors, fog machines, pumps, laser pointers, and other devices to cues in a spooky soundtrack.