Infrared Proximity Sensor

Detects an object entering its infrared beam and outputs a digital signal, with an onboard potentiometer setting how far out it triggers. Fast, cheap and needs only one pin, which makes it the workhorse for obstacle detection on robots, object counting on a conveyor and simple presence detection. Detection distance depends heavily on target colour: light and glossy surfaces trigger from much further away than matt black ones. Single digital pin, extremely simple to use; Adjustable trigger distance via potentiometer; Faster response than ultrasonic sensing; Indicator LED assists setup and alignment