Halloween Light Show – Parallel Port Relay Controller Based
Check out this cool Parallel Port Relay Controller Based Halloween Light Show it shows what some creative thinking and a bit of code and hardware can produce. “The most important thing you are gonna need is the controller. There are many out there, but for this tutorial (its easiest and cheapest) we are gonna use the kit74 parallel relay board. 30$, 35$ assembled. This circuit is going to interface