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Sneaky Uses for Everyday Things
Wireless remote alarm sensor: Make different types of alarms and sensors with a cheap remote control car.
You will need: RC car, watch batteries, buzzer, wire, LEDs, seltzer tablet, universal AC adapter.
Inexpensive radio-controlled cars have many sneaky adaptation possibilities. We’ll use the cheap single-function type of radio-controlled toy car — the type that continuously travels forward once it’s turned on until you actuate its remote control, causing it to back up and turn. You can modify the transmitter to a more compact size, and for use as an alarm trigger. You’ll also modify the receiver to activate other devices, such as lights and buzzers.
1. The transmitter is always in the Off ...
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