Arduino Basics Rotary Encoders

Rotary encoders are a digital input device that can increment or decrement a value. They are incredibly useful for GUI navigation, user selection, and more. In this video we look at using a standard 5 pin rotary encoder to change the dwell period of a model traffic light.
When the sketch is started the long and short periods are equal and about 2 seconds. While the sketch is running the user can adjust the dwell of the red or green periods to tune their traffic light.

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May I suggest: "10 PCB's for two bucks!"
https://www.youtube.com/watch?v=I2OKvS20MHQ
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Видео Arduino Basics Rotary Encoders канала learnelectronics