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I have make a remote control car
Product worked well for my Linux pc, no drivers needed, simple installation.
Rotary Encoder Module
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The Rotary Encoder Module Brick Sensor is a rotary input device (as in knob) that provides an indication of how much the knob has been rotated AND what direction it is rotating in. This Brick Sensor is a great device for stepper and servo motor control. You could also use it to control devices like digital potentiometers.
M274 360 rotary Degree encoder, is an incremental electro-mechanical device that converts the angular position or motion of a shaft or axle to digital code. The output of incremental encoders provides information about the motion of the shaft, which is typically further processed in processor/controllers into information such as speed, distance, and position.
read more : What are Rotary Encoders? Construction & Working
| Model | KY-040 | 
| Cycles per revolution (CPR) | 20 | 
| Working voltage | 0 – 5V | 
| Material | PCB + Brass | 
| Dimensions | 3 x 2 x 1cms | 
| Weight | 25 grams |