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Zio Rotary Encoder Sensor (101905)


This is a U-Shaped infrared sensor that can be used to detect the rotational speed of a motor mounted on a robot. This reading can be used to adjust the motor speed if it is too fast or too slow, and to calculate the robot’s real-world travel speed. Using a pair of these sensors, we can also measure the robot’s rotation, enabling navigation based on dead-reckoning methods.


  • U-Shaped Sensor Gap: 5mm
  • Output Signal Explaination: when the IR beam is unobstructed (not blocked by the encoder disc) it outputs a logic-LOW level(0); when blocked it outputs HIGH Level(1).
  • IR Signal Trigger: SN74LVC1G14 Single Schmitt-Trigger Inverter
  • Dimension: 32x 14mm
  • Weight: 1.9g


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Zio Rotary Encoder Sensor (101905)

  • Product Code: 101905
  • Availability: In Stock
  • $2.99

Tags: other, sensors