You may have seen ghost hunters on TV, investigating paranormal activity (or like us, you may have heard it from hiding behind the sofa while the programme's been on). Did you know that you can use your HIDIOT to build the same type of equipment that ghost hunters use to track down bumps in the night? This battery powered halloween project is easy to build within 30 minutes, and is great for kids and adults.
Sometimes you want things to only happen when the world around you changes. In electronics, we use sensors to detect these changes. In this post we're going to look at a couple of sensors, how they work and we'll show you how to use one with your HIDIOT.