Plip unit recoding

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sleepy0905
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Plip unit recoding

Post by sleepy0905 » Wed May 17, 2006 5:19 pm

Hi has anyone any advice or tips i have used the info from the rbwsmith site.
http://www.rwbsmith.plus.com/citroen2/plip/

But i followed the instructions and it did not work can anyone help.
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Post by Way2go » Wed May 17, 2006 6:12 pm

I recoded mine from the info on this page & it worked fine:

http://www.tramontana.co.hu/citroen/body/body.php

See if your recoding info is the same as this info.

The transcribing table is useful to get it right.
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sleepy0905
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Post by sleepy0905 » Wed May 17, 2006 6:18 pm

Thanks i will check that now as i have just printed the page. :D

"EDIT" Well i have just checked and double checked everthing and it is correct so i either have a dead receiver or a dead transmitter but the keyfob led is lighting up fine so i would say its the receiver. :cry:
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Post by Way2go » Wed May 17, 2006 7:04 pm

Do you have or have you got access to an oscilloscope?

If so you could 'scope across the output LED (not the red) and check you have an output pulse train. Then you could 'scope the relevant parts of the receiver to see where the signal is lost.

First of all though I take it that you observed the following 'wobbly' bit:

"noting that low should become open and vice versa; high remains unmodified"
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Post by sleepy0905 » Wed May 17, 2006 7:07 pm

Yes i do have a scope so i will have a look at this option and see if i can see what is happening. Looks like an evening in the Lab for me some time soon to have a play then. :roll:

Oh yes and i have observed the wobbly bit.
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Post by Vanny » Wed May 17, 2006 9:01 pm

if you have a digital camera or a cemera phone you can use the view finder of the camera to detect infrared signals, and for older plips and TV remotes you can usually count the pattern and thus the code for each function :D

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Post by ed4ferrets » Wed May 17, 2006 9:34 pm

Vanny how does the viewfinder thingy work please, sounds interesting? :?
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Post by sleepy0905 » Wed May 17, 2006 10:08 pm

Thanks vanny just checked and the keyfob is working ok so it must be the receiver unit :?
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Post by AndersDK » Wed May 17, 2006 10:48 pm

Sleepy -

I believe Bob Smith included the datasheet for the receiver/transmitter IC used ?
Its easy to check if it works given the luck you have access to a scope. My best bet though is that you have a dry solder joint in either unit.

Note that it is no guarantee the sender is transmitting with the visual red LED. This LED is in parallel to the IR led which may still have a dry solder joint - or the max current resistor may have gone open circuit.
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Post by sleepy0905 » Wed May 17, 2006 10:51 pm

hi checked the keyfob and that is working ok so i have now to check the receiver with the scope.
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