Halloween is one of America's favorite holidays. This project was designed to be flexible and reusable for other holidays. The circuit is triggered by a Passive Infrared detector to set off a series of bright LED's to resemble a lightning bolt, or other LED props. Add your sound chip and your recorded sound effect will also be triggered. See the complete parts list in the article, add them to the PCB and the preprogrammed chip, you’ll be ready to design your own scary holiday prop.