Infrared Emitters and Detectors

Side-looking Infrared Emitters and IR Detectors. These simple devices operate at 940nm and work well for generic IR systems including remote control and touch-less object sensing. Using a simple ADC on any microcontroller will allow variable readings to be collected from the detector. The emitter is driven up to 50mA with a current limiting resistor as with any LED device. The detect is a NPN transistor that is biased by incoming IR light.


We've seen these used for distance sensing, tv remotes and object sensing so these are the Swiss Army knife of sensors and a great piece to add to any starters kit.

Here's a link to hooking them up:
http://www.reconnsworld.com/ir_ultrasonic_basicirdetectemit.html

And heres one to know which way around they go:
http://www.kpsec.freeuk.com/components/led.htm

Read the detector with an analog read and you can do easy distance measuring - albeit rather prone to interference

• IR Emitter (Clear)
• IR Detector (Tinted pink)

• IR Schematic - Basic object detection schematic
• Seattle Robotics - Infrared object detection
• Robot Room - Excellent website with lots of goodies