Can Someone To Capture A Few Codes For Me Please...

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opossum
 
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Joined: Fri Oct 26, 2007 12:42 am

Post by opossum »

DIY IR capture that measures pulse time and carrier frequency.

Most DIY and many commercial solutions can not measure carrier frequency and often suffer from poor resolution and jitter.

maltman23
 
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Joined: Fri Jul 13, 2007 4:54 pm

Post by maltman23 »

Thanks for the IR Widget info. That looks really nice! I'm going to have to try building one.

Mitch.

nutt318
 
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Joined: Fri Jan 25, 2008 5:43 pm

Post by nutt318 »

oPossum wrote:DIY IR capture that measures pulse time and carrier frequency.

Most DIY and many commercial solutions can not measure carrier frequency and often suffer from poor resolution and jitter.


Is there a parts list for this project? I download the zip file and it had 4 schematics, I am confused on which one to use. Thanks.

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caitsith2
 
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Joined: Thu Jan 18, 2007 11:21 pm

Post by caitsith2 »

There may be 4 schematics, but there is only one with a matching board file. Use that one.

Your part list for this would be: (note, for this project, I ordered all the parts other than the demodulator through digikey, so I will be referencing those part numbers.)

Code: Select all

Part                    x Quantity      - Digikey part number
QSE157                  x 1             - QSE157
1N4148 Diode            x 2             - 1N4148DICT-ND
1N5231 Zener Diode      x 1             - 1N5231BDICT-ND
10K resistor            x 1             - 10KQBK-ND (min quantity 5 from digikey)
2.2uF ceramic cap       x 1             - 399-4403-ND
Serial port connector   x 1             - 3209FE-ND
8 Pin DIP socket        x 1             - A24807-ND
PIC 12F629 or 12F675    x 1             - PIC12F675-I/P-ND
If you plan on having this PCB made, to run into the same pitfall I did. I didn't expect the holes for the QSE157 to be too small. Also, I couldn't find IR demodulators on digikey, which is why I don't have a part number to list. You can get them from mouser, or if your lucky like I was, anything remote controlled, that is dead, is likely to have one you can salvage.

nutt318
 
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Joined: Fri Jan 25, 2008 5:43 pm

Post by nutt318 »

Thanks for the info BANNED. I may play around with a breadboard first and see if I can get it working one of these days.

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