This IR compound eye mounted on a pan/tilt assembly can be used by a robot to track movement within 200mm. Designed to fit LMR's universal sensor bracket, this sensor works by shinning IR light onto an object and then tracking the reflected IR. This sensor does not work in bright daylight as sunlight has a lot of IR and blinds the sensor.The IR LEDs can be controlled by a digital output so that ambiant light as well as reflected light can be measured. Your microcontroller needs 4 analog inputs available to use this sensor.
This sensor can be used as a basic distance sensor by measuring the level of infrared light received by the IR sensors when the IR diodes are on and off alternatively. The four IR sensors allow the location of an object edge to be determined more easily than a single sensor.
It can also be used as a simple range finder.4 pairs of IR photo transistors and 4x IR LEDs allow your robot to measure both ambient and reflected IR. It can also be used as a simple range finder. It comes pre-assembled.