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About audihere

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  1. Steve, could you elaborate on that a little? I understand the comparator and voltage ref, but then you "feed this out and then back in to the capture pin"? Do you mean out of the comparator out pin, or internally? Is the capture pin you're referring to, part of the Capture Compare, PWM module? If you're running at 5V, what do you set your voltage ref to for the comparator? Thanks, Chris
  2. Alain, thanks for ruling out the schmitt trigger. I didn't know the Futabas has such a low voltage signal. I do remember scoping one out and noticing it seemed strangly low, so that must not have just been my imagination. Chris
  3. Ya, I used the "Directly gate Timer1 with the comparator?" on a 16F677, but I'd have to jump up to I 12F683 for that feature I think. Right now, I have it working in the software pseudo-gating Timer1 with the comparator. Since I'm not doing anything else at all during that time, it almost seems overkill to let the PIC gate the timer, as I'd only maybe get a couple micro-seconds better accuracy since my loop is only a couple lines long. Missed frames is obviously a problem, but what about frames that are too short? I'm thinking that if a short frame comes in, say 8ms, but the pulse width
  4. Hi, I'm wondering if anyone has any advice on how to best/most reliably/most accurately measure Rx pulse with on a PIC? - Obviously, a Port I/O TTL bit test? - Port I/O with Schmitt Trigger? Would that be better? - IOC Port input? - Use the comparator input so that voltage trigger level could be set arbitrarily? - Directly gate Timer1 with the comparator? - Did I forget anything? This would be for just a single channel device. I'd like to measure the pulse width, then do a bunch of operations to it, but I'm wonder if there is a preferred way of doing that? I've been using the com
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