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USER GUIDE FOR 8ch IR sensor Array USER GUIDE FOR 8 Channel IR Sensor Array Fig 1 8ch IR sensor Array. Introduction This sensor module has 8 IR LED/phototransistor pairs mounted on a 0.375″ pitch, making it a great detector for a line-following robot. Pairs of LEDs are arranged in series to halve current consumption, and a MOSFET allows the LEDs to be turned off for additional sensing or power-savings options. Each sensor provides a separate analog voltage output. Features Operating voltage: 5.0 V Supply current: 100 mA Output format: 8 Analog and Digital voltages Output voltage range: 0 V to Supplied voltage Optimal sensing distance: 0.125″ (3 mm) Maximum recommended sensing distance: 0.25″ (6 mm) The module is a convenient carrier for eight IR emitter and receiver pairs evenly spaced at intervals of 0.375″ (9.525 mm). | K-IMAGINATIONS| www.kimaginations.com USER GUIDE FOR 8ch IR sensor Array Explanation: First we see basic working of IR pair using LM324. LM324 is used as a comparator here. We give a reference voltage to its input using a 10k pot. When the voltage across the receiver is less than this reference voltage, the comparator gives low output and when the voltage is more than the reference point, the comparator gives a high output. Arrangement of this is given in below fig 2.This figure show the arrangement of single channel, for 8 channel repeat the same. In our circuit there are 8 analog or 8 digital output are available. Fig.2 single channel IR. Pin Description Pin Number 1 2 3 5 Pin Name S1 to S8 ( Right side) S1 to S8 (Left side) GND VCC Description Digital Output of sensor Analog output of Sensor Ground Pin Vcc Supply Voltage Applications In Line follower robot In Obstacle detection. Ordering Information K-IMAGINATIONS, Pune 9960860390 E-mail us at:[email protected] , [email protected] | K-IMAGINATIONS| www.kimaginations.com