The MCP_POT library implements access to MCP digital potentiometers. These devices have 1 or 2 potentiometers, 10 KΩ, 50 KΩ and 100 KΩ and communicates over SPI. The library supports both hardware SPI ...
Arduino test code is run to see if the sensors are working properly, with built-in LED flashing when the sensor is triggered, and turning off when the sensor is released. The testing of the keys ...