Fourth grade burglar alarm that uses 2 sensors
Here was one cool burglar alarm from today. There is a motion sensor to detect motion at the door. The kids were challenged to use the tilt sensor too. This team put some cams in front of the door. They are connected via an axle and an elaborate structure to a tilt sensor outside the house. Another team successfully made the motor close the door when a burglar is detected. Not easy! Having the Resource Kits available this year made huge difference in what the kids came up with.
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