Light emitter and sensor module

Forum 2005-2010 (read only) Hardware Interfacing
1

Hey ppl does anybody know of a light emitter and sensor integrated into one component?

2

You can use a normal LED like this, but it has some drawbacks. Have a look at Arduino Playground - LEDSensor and try it out. The originating technical paper about the technique is here: http://www.merl.com/papers/docs/TR2003-35.pdf

Andrew

3

In case you mean two components / one package try the GP2Y0A21YK or the APDS-9102.

Both are reflective sensors but have very different usages and ranges. Can you be more specific about what you want.

4

Thanks for the response ppl. My aim is to build a small line follower bot and i am not sure that mounting an array of LEDs and LDRs on a chassis will give the best results. Just wanted to check whether there was something more efficient ! I think the suggested APDS-9102 could be a good idea!