Photo Encoder Kit, Motor Speed Sensor Module Circuit
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Prices updated: 12 Oct 2026
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About this product
A photo encoder kit with an optical sensor circuit for detecting motor speed and rotation. The sensor reads the passage of slots or markings on a rotating disc and outputs pulses that a microcontroller can count. It is used in DIY motor speed measurement, robot wheel odometry and motion feedback projects.
Specifications
- Sensor type
- Optical photo encoder
- Function
- Motor speed sensing
- Output
- Digital pulses
Frequently asked questions
How do I connect the encoder module to a microcontroller?
Connect the module's power and ground pins to the supply specified on its labels, then connect the output pulse pin to a digital input on your microcontroller. Check the pin labels on your module before wiring.
What is needed for the encoder to measure speed?
The sensor needs a rotating disc with slots or markings that pass through its optical gap. Counting the pulses over time gives the rotational speed, and the number of slots per revolution sets the resolution.
