Re: [oopic] Quadrature Encoder

I realized this morning that while I mentioned the pulses per revolution, I
didn't mention the revolutions per second, so the pulses per second couldn't
be calculated.

Unfortunately, I haven't tested what the revolutions per second actually
comes out to, but I believe it would be variable depending on the speed I
have set for the motors. Unfortunately, I think that the top speed could be
as fast as 2 rps, which could mean that the pulse rate could be well over
1KHz, and even if my estimate is excessive, I would come close to the 1KHz
rate. What this might mean is that I can measure the pulses per second at a
few low speeds, and figure out a curve of speed setting vs true speed,
though I suspect it won't be linnear.

Which object(s) in what configuration would get me the maximum resolution? I
suppose if I had an oWord filling with a pulse count each second, that might
be easiest, but it appears that there are a couple of pulse counting
options.

ooPIC Tech Support wrote:
>
> What is your motor speed? The ooPIC can handle up to about a 1KHz rate
> but might get sketchy past that, especially if as you say, you have a
> lot of objects running. From the sounds of it, this encoder will soon
> outstrip the ooPIC's ability to keep up. Try it and see what kind of
> results that you get.
>
> DLC
>
> Shaggy wrote:
>> I'm using an OOPic board and have a pair of motors with quadrature
>> encoders.
>> These put out a pulse rate of 624 pulses/output shaft revolution. From
>> looking at the OOPic documentation, that looks like a pretty high pulse
>> rate
>> to be counting. I hope to return either speed or distance traveled out
>> the
>> serial port. I have all the serial port code worked out, so that all I
>> really need is a way to turn that pulse rate into something useful.
>> Either a
>> pulses per second rate would work, or a number of pulses in the last
>> second
>> (leaving the division up to the receiver and not on the OOPic). I figured
>> somebody on here would have either a suggestion or some example code I
>> could
>> use for that. This is only one piece of a larger project, and I am
>> getting a
>> bit tight on memory, but not excessively so....yet.
>
> --
> ------------------------------------------------------
> Dennis Clark ooPIC Tech Support
> www.oopic.com
> ------------------------------------------------------
>
>

--
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