The latest Circuit Playground board, the Adafruit Circuit Playground Express comes equipped with an onboard IR transmitter and receiver! This can be used to communicate with TVs and other household devices. You can also use infrared remote controls to control your Circuit Playground Express. You can use another Circuit Playground Express as a remote to control your CPX, and you can even send simple messages between Circuit Playgrounds. By measuring the raw reflected IR light bouncing off of nearby objects you can make a simple proximity sensor!


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