When working with special effects, the most important part is timing. So for this Halloween, I am doing a series of projects that use simple DIY sensors to help you automate your Halloween setup. So far we have covered pressure plates and proximity sensors. This week, I am going to show you how to use motion sensors to activate your special effects.
There are a lot of small motion sensor modules that will connect directly to your microcontroller. These output a HIGH signal whenever they detect motion. You can read this with a digitalRead function and then have your microcontroller activate any number of special effects. You can either use a commercial shield or make your own.
Read all about it on MAKE here: / and see the full build here: / And here's the build on Instructables: /