Security Plate, a pressure plate detecting the weight changes with light sensor built with LEGO Mindstorms EV3
A phone holder that rings an alarm when the phone is picked up. It is a plate, lying on rubber wheel, that changes its height, based on the weight of the object placed on top. The color sensor detects these changes and rings the alarm. With some fine tuning, this robot can even act as a weighing machine.
- 08 Feb 2019