How to Use Rotary Encoders on the Arduino - Ultimate Guide to the Arduino #25

Rotary encoders are commonly used as dials for volume control, menu navigation, and more. Learn how they work, how to connect them with switch de-bouncing, and how to program them with interrupts on the Arduino.
This is tutorial #25 in the Ultimate Guide to the Arduino, a complete video course on the Arduino microcontroller with 45 lessons that are designed to teach anyone how to master the Arduino at any skill level. Visit our UA-cam channel page to watch the entire series!
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[@dystopian-me]

this work really well BUT just for anti clockwise, for closkwise debounce not much effect

[@PacTel54321]

Thank you for this tutorial. I have a rotary encoder based speed control that operates open loop; I.E. there is no way to tell what the setting is except from the motor it is driving. I intend to sniff the encoder signals and monitor them with a counter for feedback on the speed setting. This tutorial will help me get stated. An FYI; you could possibly damage the Schmitt trigger (CMOS IC) if too large a capacitor is connected to the inputs; upon power-down the caps will discharge into internal protection diodes because they become forward biased (VCC becomes GND). Check the data sheet on the part.

[@Leftypounder-fz2rb]

A very well done, useful video. Thank you.

[@woolfy02]

cool project! Makes me want to dig out my box of electronics and start making things again. lol

[@Mr123bohemian]

Thank you, I have question, I want to use a 4 relay using 4 hall effect sensors to activate them individually, it's for fuel injection system, I'm just finding it hard to find anything on this, your help would be very much appreciated, I'm a newbie to all of this, kind regards

[@t1d100]

Nice

[@PhG1961]

Nice and very usefull!