[SOLVED] want to build ir receiver of 38khz

[hiten09]

i wants to build a IR receiver which can receive the IR beam of 38khz and the detection output colud be shown by led,further i want to connect this to microcontroller , just like an obstacle finder or like visitor counter please attach the schematic.
i had made the transmitter with 555 ic.

 

[tpetar]

Did you search edaboard and internet first to find this ? Or you just throw your wish into magic board ?

 

[hiten09]

ya i had searched but didnt got any workable idea thats why i am trying here. i thought people here are for helping each others rather than commenting on anyone's need.

 

[tpetar]

TX must be IR or can be laser ? I can show you simplest circuit for that immune from daylight and room lights. No need for NE555 for that purpose.

Parts cost about 1-3eur

 

[hiten09]

i made IR transmitter i am attaching its circuit

 

[hiten09]

now the problem is the ir receiver circuit that i got with this circuit is not working and i am unable to find the fault, so i you say i will attach the circuit that i am having with me or if you have any other idea then pls share it here

 

[tpetar]

First IR is not good for long distance, better use simple laser pointer diode on one side and my RX circuit on other side.


Use middle circuit. at NC put photo transistor.

When laser beam break, then you get output from optocoupler. You can use this as alarm, counter,.....


Its immune from daylight,....

For TX use cheap laser pointer, in some tube. Beam can be sean only with some smoke or spray like on movies.

 

[hiten09]

it seems very tough i didnt used them before.. isnt there any method by using tsop1738 for IR Receiver?

 

[tpetar]

Photo transistor is simple its like LE diode. You can use IRE5,...

 

[hiten09]

but i had already made the transmitter

 

[varunme]

I too looking for the same and found

TSOP1738 when used as a Beam Break Detector - Blogs - Electronic Circuits Projects Diagrams Free

please post here if you find some simpler ones

 

[hiten09]

varunme
the link shows 3 other link and all of the are already removed files do you have that file with you?

 

[varunme]

see the attached file

 

[hiten09]

i had tried this circuit today in evening it doesnt works

 

[varunme]

**broken link removed**

 

[hiten09]

i am not getting

 

[varunme]

i am not getting

means ?

 

[hiten09]

means the link shows many video and it doesnt shows anything about ir receiver

 

[varunme]

this image is inside the page

https://4.bp.blogspot.com/_KBlvp5i4...0/ArduinoHeartbeatSensor-Circuit-Diagram1.jpg
its using phototransistor,
i too want to check the one with phototransistor

 

[hiten09]

but this is transmitter, i am asking about receiver