i dont have tsop 1838 available right now.
but i do have ir led pair.
can i use them somehow to read remote control signals to with d help of arduino.?
plz help.
The TSOP1838 has a IR receiver and decoder inside.
Connecting a TSOP1838 to an Arduino is possible. The Arduino can detect the protocol for volume up, tv on, and so on.
As far as I know, receiving the 'raw' modulated IR data from remote controls has not been done with an Arduino. I think it should be possible.
A ir led pair contains many times a ir led and a phototransistor.
Like this one, Infrared Emitters and Detectors - SEN-00241 - SparkFun Electronics
If you use your own protocol, you might be able to transmit data from one Arduino to another.
But I think you need to amplify the signal from the phototransistor, and it will perhaps only work at a distance of 5cm (2 inch) or less.
:~