Keyes KY-040 High Performance 360 Degree Rotary Encoder Module

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Description:

Rotation of the rotary encoder may be counted by the positive rotation direction and a reverse direction pulse frequency output during rotation potentiometer not count this rotation count is not limited. With buttons on the rotary encoder can be reset to the initial state, that starts counting from 0.

Specification:

General

ModelKeyes KY-040

MaterialGlass fiber + plastic + iron

CompatibilityArdunio

SunFounder Rotary Encoder Module for Arduino and Raspberry Pi

Application 
The module can count by rotation the pulses output both clockwise and counterclockwise. Different from potentiometer, the counting is unrestricted. It can be restored to the original state by the button on the module, i.e. counting from 0. 

Application 
It is widely applied in fields such as steel, harbor machinery, hoisting machinery, pressure machinery, glass machinery, packaging machinery, etc. 

Component List 
- 1 * Rotary Encoder module 
- 1 * 5-Pin anti-reverse cable 

Rocker Switch - Round w/ Blue LED

These panel-mounting rocker switches have built-in indicator lights to let you know when your switch is engaged. They mount into a 20.2mm diameter hole and are rated up to 16A @ 12v. These simple SPST on-off switches have three terminals, the two that you would normally see plus a ground tab for the blue LED lamp inside. Although these are rated for 12v, the LED works with as little as 5V.