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Holiday Notice: Elecrow will be on holiday from May 1-4. You can still place orders during this time. PCB & PCBA orders will be processed from May 4th, and product orders will start shipping from May 5th. Enjoy the holidays!
Use this module to measure the velocity of wheels or motors. With a light, laser or Infrared emitter and receiver, this module would be help in DIY applications such as mobile robot.