Toy Hack: LED Sensor Stress Toy

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Today we "hacked" a foam squeeze toy, adding an LED diode and homemade pressure sensing circuit through a hole drilled down the center of the toy. The pressure sensor consists of two square pieces of velostat, which increase the flow of electrical current when pressed together to complete the circuit, and reduce the flow with less pressure. By adding a velostat switch to our circuit, weโ€™re able to change the brightness/speed of the blinking LED when squeezing the toy!

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