IR sensor

Hi friends.. i need one more help from you.. i needed IR sensor circuit diagram.. i am using IR sensor in my project. i have IR led and IR reciever.. using this how can i build circuit to get logic HIGH or LOW output.. pleaze mention circuit diagram.. see to that it should be as simplest as possible.. becuse as i said its a part of my project.. also distance may be 10 cm or so.. please spend some time for me... THANK you.....

@ sunil1990
where u want to use this circuit ru want to use this for interruption to detect someone is crossing the ir beam like room light controller project

yea buddy.. exactly for the same purpose... can you help please.. ?

Hi friends.. i need one more help from you.. i needed IR sensor circuit diagram.. i am using IR sensor in my project. i have IR led and IR reciever.. using this how can i build circuit to get logic HIGH or LOW output.. pleaze mention circuit diagram.. see to that it should be as simplest as possible.. becuse as i said its a part of my project.. also distance may be 10 cm or so.. please spend some time for me... THANK you.....

sunil1990

I am also on the same task..the diode and phototransistor comes in different sizes like 3mm,5mm...

the blue or white one is Tx,Black one is Rx

in Tx: the longer pin(anode) must be connected to supply and shorter (cathode) to ground

in Rx: The longer one is emitter which must be grounded and the shorter one is collector which acts as output....

555 Timer is used as a pulse stretcher...

the blue or white one is Tx,Black one is Rx

in Tx: the longer pin(anode) must be connected to supply and shorter (cathode) to ground

in Rx: The longer one is emitter which must be grounded and the shorter one is collector which acts as output....

555 Timer is used as a pulse stretcher...

faiz_ahmed

Yeah always dont judge the pins with their lengths, it differs from mfrs to mfrs Try to check in with there respective datasheets.

[Topic moved to Electronics forum]

@ sunil1990
u can use this long range circuit

http://pcbheaven.com/circuitpages/Long_Range_IR_Beam_Break_Detector/

http://www.extremecircuits.net/2010/05/long-range-ir-transmitter.html