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SparkFun

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Rotary encoders can be used similarly to potentiometers. The difference being that an encoder has full rotation without limits (It just goes round and round)...

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Rotary encoders can be used similarly to potentiometers. The difference being that an encoder has full rotation without limits (It just goes round and round). They output gray code so that you can tell how much and in which direction the encoder has been turned. They're great for navigating menu screens and things like that.

This encoder is especially cool because it has a common anode RGB LED built in, as well as a push-button. This version has an updated material that is heat resistant and slightly changed dimensions, but should still work well with our rotary encoder breakout board.

Jargon buster

Plain-language definitions for the technical terms used above.

breakout
A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
encoder
An encoder is a sensor that converts the rotation or position of a shaft, knob or dial into electrical signals, reporting movement as incremental steps and direction, or as an absolute position. It is used to track how far something has turned, which matters for precise positioning, speed control, repeatable movement, or using a rotary knob as an input.
LED
A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
RGB
Short for red, green and blue, the three primary colours of light that are mixed in varying amounts to make a wide range of colours. In electronics RGB can refer to an LED or pixel that blends these three colours, or to a colour signal or interface that carries separate red, green and blue channels.

EC12PLRGBSDVBF-D Rotary Encoder Datasheet

Datasheet · 422.3 KB · Click any page to view full size

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EC12PLRGBSDVBF-D Dimensional Drawing

Mechanical Drawings · 229.0 KB · Click any page to view full size

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SparkFun Rotary Encoder Illuminated RGB Datasheet

Datasheet · 485.9 KB · Click any page to view full size

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SparkFun Rotary Encoder Illuminated RGB Dimensional Drawing

Mechanical Drawings · 111.1 KB · Click any page to view full size

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Supplier page — sparkfun.com

Supplier Description · 420.4 KB · Click any page to view full size

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