2021-05-10 (M) Wearable Macro Keyboard BackOfTheHand BotH Coding to recognize IR input

My 3D printer needed some maintenance, and that delayed me. While I waited for prints to cure, I wrote an algorithm to detect finger extension through the infrared sensors. At first, I planned to sense ambient levels, but I realized I only needed to take a reading immediately before I turned on an LED. Testing with a power supply and voltmeter showed that it should be possible to detect finger positions like this, but I wanted to test with a microcontroller to prove that I could see it in code.
Coding for automatic IR recognition

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