Re: Black box

Ron,

At the risk of being a "dumb" guy, consider this (paraphrased from
Mariss' post):

The clue is doing a simple integration of velocity to calculate
position. Assume a velocity of 2,000 steps per second, Interrupts occur
at 1,000 times a second, therefore the motor moves 2 steps on every INT.
Simply add/sub 2 to/from position register.

Alan KM6VV
PS. Smart is nice, Yeah I'd like a FlashCut Eqv., but that's a LOT of
work. This hardware I can get and USE soon!

PSS. I know, let's get Kerr to give us his! Yeah, that's it! ;>)


ron ginger wrote:

>
> First, maybe we ought to use slightly less offensive terms than 'smart'
> and 'dumb', although I do agree they are a good description. Hope no one
> gets upset by being know as a smart or dumb advocate :-)
>
> I am on the smart box side. If we can get one good implementation of the
> 'messy motion stuff' in the box, then it wont have to be re-wriiten a
> thousand times by everyone else. If Kerr can do it AND the servo drive
> and sell the whole thing for under $200, then the signal piece alone
> should eaisly be about $100.
>
> Will one of you dumb guys please explain how I would program the timer
> generator boards? As far as I have been able to understand the hardware
> can be set to generate a pulse train of some frequency, over a very
> wide range. Ok, but to drive a step motor the number of pulses is more
> important that the frequency. How do I control these timers to get pulse
> count?
>
> If I have to send commands to change the rate to handle the rampup, then
> the PC is still in a time critical loop, and I dont see how this
> hardware has helped much.
>
> Someone plese explain the programming from the start point that I know I
> want to make a move and I have a count of X and Y values to move. On the
> smart box all Id do is output a string like "move xxx yyy" and it would
> happen
>
> ron ginger
>
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