My partner and I are thinking about making a sensor that detects movement. We are thinking about installing it in a door frame or beside a wall, when something or someone trespasses the alarm goes off. The alarm will send a signal to somewhere like a phone telling the owner. We tried to make the code, but found out it is actually pretty hard finding the right code and connecting it to the alarm. We are going to try and find different ways to make it.
interesting idea, is this based on the microbit moving or something else?