IR detection using IR LED

[Jaydu1904]

Hi friends, I have a doubt...
I am building a IR sensor circuit, n can I use IR LED for the detection of reflected IR waves??

please visit the link **broken link removed**
for circuit diagram. also if I cant use that, pls suggest the modified circuit...

thanks.

 

[MikeMl]

Yes, but you will get much better sensitivity if you use an IR phototransistor like a LTR-3208E