IR Receiver pinout recovery help

IR Receiver pinout

Hello everyone.

I have got two IR receiver modules (both 3 pins). But none of them contain neither the manufacturer name nor the part number. (And same condition goes for all the modules available to me)

HOW CAN I DETERMINE THE Vin, Gnd and Vout OF THE THESE RECEIVER MODULES.

??

Plz help as the submission date of project is really looming over my head.

Thankyou

IR Receiver pinout

Consider the fact, that an IR receiver as any IC has substrate diodes, that allow to identify the power supply pins in most cases.
You only need an ohmmeter respectively a multimeter with diode tester function.

By the way, where did you get the parts? In a food market?

Thankyou very much sir for posting a reply with help. I tried diode testing with the multimeter and following are the results.

Out of all combinations, 1 combination is showing a resistance of around 750 ohms and one is showing around 560 ohms. In both combinations, the middle pin is common (and multimeter's red probe, i.e. the probe OTHER than the the COMMON was attached to it)

In my guess the common pin is GND. The other pin of the combination of 750 ohm is Vin and the third pin is Vout.

Plz correct me if I am wrong.

How does it look like? Does it look like this:

**broken link removed**

or does it look like this:



or is it some other exotic module

Why wouldn't you look at the spec sheet? If you don't have a part number, was the part removed from another board? If so, look on the board. From there you should be able to figure out the pinout.

Most probably posting the sensor snapps will solve your problems. Good luck

The first picture posted by our friend "miredox" is the module under question. Whats its pin-out??

Then the pinout will be this:
**broken link removed**

Hi everyone -

New guy, but hope to be a contributing member soon.

Working on a project to record IR codes sent from a Sony camera remote (Sony Ex-1). I purchased an IR receiver from a surplus electronics store without the benefit of a data sheet, so I'm not sure what it was pulled from and not sure which pins are which.

**broken link removed**

**broken link removed**

Ohmmeter gives me these readings:

Pin 1(ohmmeter anode) to Pin 2(ohmmeter cathode) = 733 ohms
Pin 1(ohmmeter anode) to Pin 3(ohmmeter cathode) = 946 ohms

All other anode, cathode, and pin combination's return no reading from the ohmmeter.

I have a feeling that I might be able to determine the pin layout just based on the mini-pcb shown in the rear shot, but I wouldn't know where to start.

Thanks for any help!

John

edit: Based on the older posts from khansaab21 and miredox, since my readings are the reverse of those by khansaab21, Pin 1 should be 5+ as it is common, therefore Pin 2 should be ground with the lower resistance, and Pin 3 should be SIGNAL. My understanding is that an IR receiver directs voltage to ground when IR is detected, so these deductions seem to make sense, but confirmation would be great...

Added after 3 hours 6 minutes:

lol...

Wired as above: 5v to Pin 1, Grd to Pin 2, and signal to Pin 3

The IR receiver became VERY hot to the touch and the air was filled with that ominous electrical burning smell. Mmm mmm, fresh baked electronics.

Going to go out on a limb and say that wasn't the correct wiring.

Resistance between Pins 1 and 2 is now 207 ohms... Looks another trip to the surplus store is in order.

Can anyone give me some feedback on this? danke

I used the following methodology to determine the correct pin out by trial and error.
Let the pins be be numbered 1, 2 and 3. Since there are 3 pins therefore here could be 8 possible combinations. And trust me, it really isnt hard trying all those 8 out if you have a major goal to achieve.
Now,
-Connect 1 to Vcc, 2 to Gnd and output to 3. (Where output is a led with current limiting resistor. Since the output of usually available modules is normally high, therefore LED will be glowing). Point a TV remote at the module and press a button. If you have the correct configuration, then the LED will start blinking(very rapidly and you have to watch very closely but still it is very visible)

If the LED doesnt blink then swap the power pins and again try the same method. If that doesnt work as well try a different combination. But ultimately you will find what you need.

Note:
As far as I remeber, the module you are using has the following pin out.
1 - Output
2 - Gnd
3 - Vcc

But you still need to check.

Thanks for the tip, khansaab21. That's the exact type of process I was looking for. I'll have another go at it after I go back to the shop tomorrow (and buy more than one IR module...).

The pinout configuration that you describe is how I had originally hooked it up, but I was not getting any readings back into the Arduino Mega. Still could have been a pin issue, but methinks the issue lies with the code.

Thanks again.

checkout my post below:
http://birbilis.spaces.live.com/blog/cns!2335BBEF59B92C54!1497.entry

(if anyone knows how to enter a URL at a post, please let me know to edit this message)