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Description: Infrared proximity sensor made by Sharp. Part # GP2Y0A21YK has an analog output that varies from 3.1V at 10cm to 0.4V at 80cm. The sensor has a Japanese Solderless Terminal (JST) Connector. We recommend purchasing the related pigtail below or soldering wires directly to the back of the module.
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1 of 1 found this helpful:
This sensor gives readings that can be converted in distances very easily. My only concern is that is a little noisy and the measurements are not completely stable, they vary within a 2-3 cm range of the real measurement but is normal considering the low cost of the device. The sensor is good for applications that do not require high precision.