Re: TI-H: IR Led problems
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Re: TI-H: IR Led problems
Ground, Positive, and switched. The switched line should go high if IR
loght comes through... If it doesn't, then get a different IR collector...
:)
>Ok...here's the basic circuit i was workin with...
>
>For some reason the detector (which liiks like a clear transistor) has 3
>pins. I can understand why a real transisitor would need 3, but why would
>this? The third pin should have been replaced the IR sensitive part.
>Tell me if you see anything wrong with this...
>
>-- Jon Olson
>
>
>-----Original Message-----
>From: Grant Stockly <gussie@alaska.net>
>To: ti-hardware@lists.ticalc.org <ti-hardware@lists.ticalc.org>
>Date: Tuesday, April 28, 1998 10:42 PM
>Subject: Re: TI-H: IR Led problems
>
>
>>
>>Have you tried checking the schemaitc?
>>
>>>I hapened to be near Radio $hack today, so i decided i'd walk in and see
>>>what overpriced junk i could buy today...for $2.00 i found an IR
>>>LED/Detector pair. I thought "Oh, cool...i can buy one of these and see if
>i
>>>can get a simple IR circuit working. So, i take em home, and start using
>my
>>>trusty alligator clips to hook em up. Unfortunately, i've run into a bit
>of
>>>a problem. No matter how i hook up the detector, i either always get
>current
>>>passing through, or i never get current passing through. It never seems to
>>>be "Only when i'm shining my little IR Led on you that i get light. I'm
>>>thinking it's probably the detector that's dead, but i can't be sure. I'm
>>>slightly angered by this :>
>>>
>>>- Jon Olson
>>>
>>>--
>>>"Nobody will ever need more than 640k RAM!" -- Bill Gates, 1981
>>>"Windows 95 needs at least 8 MB RAM." -- Bill Gates, 1996
>>>"Nobody will ever need Windows 95." -- logical conclusion
>>
>
>Attachment converted: Macintosh HD:schem.JPG (JPEG/JVWR) (0001295C)