Sharp Distance Measuring Sensor unit 10 to 80 cm – GP2Y0A21YK0F

Sharp Distance Measuring Sensor unit 10 to 80 cm made by Sharp. Part # GP2Y0A21YK has an analog output that varies from 3.1V at 10 cm to 0.4V at 80 cm. The sensor has a Japanese Solderless Terminal (JST) Connector. Sharp GP2Y0A21YK Infrared Proximity Sensor 10-80 cm is a distance measuring sensor unit, composed of an integrated combination of PSD (position sensitive detector) , IRED (infrared emitting diode) and signal processing circuit. The variety of the reflectivity of the object, the environmental temperature and the operating duration are not influenced easily to the distance detection because of adopting the triangulation method. This device outputs the voltage corresponding to the detection distance. So this sensor can also be used as a proximity sensor.

To use, connect the black wire to ground, red wire to 5V and white wire to the analog input. The analog voltage out will range from 3V when an object is only 4″ (10 cm) away and 0.4V when the object is 32″ (80 cm) away.

Note: This sensor draws current in large, short bursts, and the manufacturer recommends putting a 10 µF capacitor or larger across power and ground close to the sensor to stabilize the power supply line

Specifications:

Model	GP2Y0A21YK0F (10 to 80 cm)
Operating Voltage Range	4.5~5.5V
Distance measuring range (cm)	10 ~ 80 cm
Screw Holes	37mm apart, 3 mm diameter.
Connecting cable length (cm)	15
Length (mm)	44
Width (mm)	18
Height (mm)	13
Weight (gm)	4

Package Includes :

• 1 x Sharp Distance Measuring Sensor unit 10 to 80 cm.
• 1 x Connecting cable.

Useful Links:

• Sharp GP2Y0A21YK Datasheet