In this tutorial we only go through the steps of hooking the pad, so you can detect if enough pressure has been applied or not. We will also go through methods to receive variable values by using a capacitor or an analog to digital converter (ADC).
The second design in this tutorial makes use of a capacitor just like in the LDR tutorial. Using this method we can measure the resistance of the pressure pad. If there is no pressure, we will get almost no values. As soon as we apply some pressure, we will get values varying from high as 100,000+ right down to 5,000.
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Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.