Amazed ;) IR & Photo-transistor not sensing?

I just picked up IR and photo-transistor which are not sensing well… i have used circuit like this…
Anything i am missing???
i have connected 5V across IR which is showing beam in camera, and 5V across photo-transistor emitter and collector, with 10k resistor at collector, and took my output from collector…
any idea???

What circuit? There is no link.

Aaah :slight_smile: sorry, i missed..
This is the link..

Is there a resistor in series with diode?

By not sensing well you mean that pin 4 (or the collector) is not pulled down? What are the specs of the IR led and the photo transistor? Is the IR led emitting the wavelength that the photo transistor is sensitive to?