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the connections MUST be :
15 enable input (active LOW) 1A0
200 ohm top adjusted variable resistance (pot)
Key Features
The sensors in this coin acceptor use the thickness
Force Sensitive Resistor Sensor (Square) made in USA IRF510 the connections MUST be :This is a force sensitive resistor from sparkfun with a square, 1. 75x1. 5" (44 x 38 mm), sensing area. This FSR will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance. When no pressure is being applied to the FSR its resistance will be larger than 1M. This FSR can sense applied force anywhere in the range of 100g 10kg.. Sparkfun force Sensing Resistors (FSR) is a