Re: faster steppers

Hi Ian,

OK, that sounds like a good way. Always wanted a tach. One could
attach a relective stripe and use a photo detector and PIC to figure
RPM. I need to get around to that (useful on mill too)!

Alan KM6VV

Ian Wright wrote:

>
> Hi Alan,
>
> I was measuring the motor speed mechanically with an r.p.m. meter. It works
> a bit like a speedometer in that it has a shaft which you couple to the
> rotating object - in this case by pushing a rubber cone on the end of it
> against the centre of the motor pulley - and the needle is then taken round
> the dial to indicate speed in one of 3 ranges. There is a lock facility so
> you can hold the reading until you can get the meter to where you can read
> it clearly. So, what I am measuring is the actual speed I get when driving
> the motors from EMC.
>
> Ian
> --
> Ian W. Wright
> Sheffield UK
> www.iw63.freeserve.co.uk
> ----- Original Message -----
> From: "Alan Marconett KM6VV" <KM6VV@...>
>
> > Henrik, Ian, list,
> >
> > How were you using a rate generator to MEASURE the maximum steprate?
> > Just by feeding the driver with a square wave? I've been trying to use
>