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'[EE]: Infrared Receiver Module - Pinout please!'
2001\01\04@233322 by Bala Chandar

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I have bought an infrared receiver module for remote control experiments
using 16F84A. But the pinout details are not available. The part number
seems to be TK69. There is no manufacturer's name or logo on the module.

The dimensions of the plastic portion are 12mm x 10mm x 4mm. It's dark brown
/ black in color and has 3 pins as shown in the ASCII art below.

I searched for info using Google and Altavista but to no avail.

Can someone tell me whether the pinout I have shown is correct? (This is
based on a similar looking module in Digikey catalog).

Thanks & Regards,
Bala


  _________  Infrared sensor module
  |   _   |  Numbers printed on the top:
  |  | |  |  TK69   931
  |  | |  |  TSOP  1738
  |  | |  |
  |  | |  |  Front view showing the area
  |__|_|__|  receiving the IR signal
   | |   |
   | |   |
   | |   |
   | |   |
   | |   |
   | |   |
Gnd        Output
    +5V

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2001\01\05@005941 by Dan Michaels

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Bala Chandar wrote:
>I have bought an infrared receiver module for remote control experiments
>using 16F84A. But the pinout details are not available. The part number
>seems to be TK69. There is no manufacturer's name or logo on the module.
.........

{Quote hidden}

I am sure there will be immediate flak from several other
piclisters for "suggesting" this, but try hooking it up using
a 1-2K resistor in series with the lead you believe to be +5v.

If correctly connected, the chip probably will function.
If incorrectly connected, the resistor will help protect its
little plastic behind. If there is a queasy feeling in your
stomach, use a larger value R.

may the luck be with you,
- dan michaels

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2001\01\05@011905 by uter van ooijen & floortje hanneman

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> >   _________  Infrared sensor module
> >   |   _   |  Numbers printed on the top:
> >   |  | |  |  TK69   931
> >   |  | |  |  TSOP  1738
> >   |  | |  |
> >   |  | |  |  Front view showing the area
> >   |__|_|__|  receiving the IR signal
> >    | |   |
> >    | |   |
> >    | |   |
> >    | |   |
> >    | |   |
> >    | |   |
> >Gnd        Output
> >     +5V

Above pinout is corrcet. Output is open-drain with internal 100k pull-up.
Type number is TSOP 1738 (for 38 KHz IR modulated signal, suitable for
'continuous transmission', unlike TSOP18xx). Manufactured by Vishay
Telefunken. I had no trouble finding the datasheet using google. These
components are quite cheap here in Holland (< $2 a piece).
Wouter

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2001\01\05@013743 by Bala Chandar

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Thanks a lot, Dan and Wouter.

Quite often, getting info on components is much faster through knowledgeable
and helpful Piclisters than even Google!

Wouter, here in India (Bombay), this  infrared receiver module is even
cheaper. I bought it for Rupees 40 which when converted, is around US$ 0.83!


I tested the module. It's working fine and is quite sensitive too.

Thanks once again!

Regards,
Bala

> {Original Message removed}

2001\01\05@022238 by Roman Black

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Hi Bala, I replace these in VCRs and TVs every
week. Because the exact parts are not always
available, I have to find substitutes.
I have a simple procedure for finding the
correct pins, it always works and never
damages the unit.

Usually the GND pin is the left or middle pin,
looking from the front. Get a +5v DC regulated
supply. Important!

Connect the 5v through a 1k resistor to limit
current if you get the pins wrong. Connect a LED
to +5v and another 1k resistor, the output
pulls the pin low and will light the led.

You need a VCR/TV remote to test it, as it
needs 40kHz modulated infrared.

Just connect the pins in every combination until
it works, takes about 20 seconds. I clip the
GND lead on with a spring clip, and hold the
other two leads in my hands. Very easy.







Bala Chandar wrote:
{Quote hidden}

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2001\01\05@102924 by Olin Lathrop

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{Quote hidden}

Two comments:

1  -  Look at the pinout of similar modules made by mainstream
manufacturers.  Chances are most will have the same pinout because they all
want to be replacements for the others.

2  -  Toss this one and buy one that comes with a spec sheet.  How much is
$2 of your time worth?


*****************************************************************
Olin Lathrop, embedded systems consultant in Devens Massachusetts
(978) 772-3129, .....olinKILLspamspam.....embedinc.com, http://www.embedinc.com

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2001\01\05@111701 by Steven J. Devine

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----- Original Message ----- From: "Olin Lathrop" <olin_piclistspamspam_OUTEMBEDINC.COM>
> 2  -  Toss this one and buy one that comes with a spec sheet.  How much is
> $2 of your time worth?

Probably about $2.

The real question is, how much is your research time worth?  
(but then, he already has it working based on his other posts, I'm just being a wise guy)

Steve

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2001\01\06@024017 by Bala Chandar

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Roman Black wrote:
{Quote hidden}

What I appreciate in Roman's posts is that, many of them contain practical
tips and useful info which make things that much easier for others whose
experience might be limited.

Thanks Roman! When I come across a sensor module for which I don't know the
pinout, with your safe and foolproof method, I should be able to find that
in a jiffy!

Regards,
Bala

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2001\01\06@025051 by Roman Black

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You're welcome! Nice to be appreciated.
:o)
-Roman




Bala Chandar wrote:
> What I appreciate in Roman's posts is that, many of them contain practical
> tips and useful info which make things that much easier for others whose
> experience might be limited.
>
> Thanks Roman! When I come across a sensor module for which I don't know the
> pinout, with your safe and foolproof method, I should be able to find that
> in a jiffy!

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2001\01\06@045525 by Bala Chandar

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> -----Original Message-----
> From: Olin Lathrop [spamBeGoneolin_piclistspamBeGonespamEMBEDINC.COM]
> Sent: Friday, January 05, 2001 8:57 PM
> To: TakeThisOuTPICLISTEraseMEspamspam_OUTMITVMA.MIT.EDU
> Subject: Re: [EE]: Infrared Receiver Module - Pinout please!
>
> Two comments:
>
> 1  -  Look at the pinout of similar modules made by mainstream
> manufacturers.  Chances are most will have the same pinout
> because they all want to be replacements for the others.

Good suggestion, and that's what I did first. I looked at Digikey catalog to
get an idea. But I wanted to be sure before proceeding further.

> 2  -  Toss this one and buy one that comes with a spec sheet.
>  How much is $2 of your time worth?
>
You have a point in saying that it's not worth buying a component without a
spec sheet. But in this case, I had to do it for two reasons: 1. While
phototransistors are freely available, infrared sensor modules are hard to
come by (here in Bombay, India).

2. I was confident of getting the required information through a Web search
or through helpful Piclisters. And I was not disappointed!

Regards,
Bala

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