80cm Infrared Proximity Sensor


The 80 cm infrared proximity sensor is a general purpose type distance measuring sensor.

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This sensor SharpGP2Y0A21YK, boasts a small package and very low current consumption, takes a continuous distance reading and returns a corresponding analog voltage with a range of 10cm (4″) to 80cm (30″). It can be used in TVs, personal computers, cars and so on.


  • Grove interface compatible
  • Wide supply voltage range: 2.5V-7V


The sensor is quite small and use a tiny connector called a JST connector. These connectors have three wires: ground, vcc, and the output. Because the sensor fires continuously and don’t need any clocking to initiate a reading, it is easy to interface with any microcontroller.


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