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Infrared Emitter and Phototransistor that works for 2-3 feet?

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e1ioan

New Member
Hi,
I was trying to use this pair of Infrared LED and Phototransistor with a Arduino project and so far everything works. The problem is that the distance between the two can't be more than 2-4 inches... Am I doing something wrong? Should I find another solution? Will a brighter IR LED increase the distance, or do I need a more sensitive Phototransistor? Both?

This is what I got:
Matched Infrared Emitter and Phototransistor Detector - RadioShack.com

This is the schematic I'm using:
IR-Detector-Circu&#.jpg


TIA
-ioan
 
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