Doubling the pusle count

[Darrel Taylor]

I think if there are antenna's (a.k.a. long wires) hooked up to the option pins, the internal pull-ups may not be good enough. Small jumpers or dip switches should be ok though. No problem adding external pull-ups if desired. Or you can tie them directly to VDD or VSS.

With the IdleState pin left open, the program will assume the input idles HIGH, with negative going pulses, which is the opposite of the 0-12-0 polaraity described before. So I'd start with that pin grounded.

The Invert input should be left open, without any wires, since that circuit uses the NPN transistor that inverts the output. It was just an option available for anyone else that might pick up the code from the forum. The output follows the same polarity as the input Idlestate, so there shouldn't be a need to change it with that circuit.

When you programmed the chip, did you uncomment the ANSEL line?
I was using a 12F629, but I think you're using a 675.
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[malc-c]

Thanks for the feedback.

I did see you note on the use of the chip, and missed it completely when I programed the ver3 of the code ! Bu99er !!!

With the ansel line remmed out and using a 12F675 - how would that effect the way the unit performed... (Brian - if you are reading this I'll send a new PIC to you if I screwed up !!)

[Darrel Taylor]

With the ansel line remmed out and using a 12F675 - how would that effect the way the unit performed

Without it, there won't be a performance.
The digital Input latches are disabled while in analog mode. So it can't see the pulses, or the options.

Sorry, I should have left it un-commented.

[malc-c]

[sware] beep beep beeeeeP [/sware]

I thought as much... I'll re-code and send him a replacement PIC

Next time I'll wear my glasses !!

[Darrel Taylor]

HI Malcolm,

Stumbled across this thread again.
Just wondering if he ever got it working?
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[malc-c]

Hi Darrel,

I sent a couple of PICs to him and I think that from memory he was not able to get it working and gave up in the end. Thanks for the interest and your support with the original code

[Darrel Taylor]

Bummer.
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