Re: wiring Gecko drivers - possibley bad steps

>
> > Am I correct in
> >this assumption? or is it that it can go down to 200 steps per rev
> >which would be better for me.
> >
> >
> Yes, it can, but I really don't think this is going to fix your

problem.

>
> One thing I would do is connect a set of headphones, with perhaps a

1000 Ohm

> series resistor between the Gecko's +5 VDC and STEP terminals.

Then, listen

> to the tone as you jog the machine into the speed range where it

has a

> problem.
> Does the tone rise and fall like slide whistle (ie. a very clean

tone)

> or like a bunch
> of angry bees (a raspy, buzzing noise with little tone to be

heard)? If

> the former,
> it has to be the motors (unless it is due to the lack of capacitors

or

> the improper
> adjustment of the midband resonance damping). I'm having a problem
> understanding
> why it is crapping out at only 6666 microsteps/second. But, if you

hear

> the buzzing
> noise instead of the clean tone, then your step pulse train is not
> "smooth", ie. the
> timing between step pulses is varying greatly, and this will cause

the

> step motors
> to lose sync.

Would it be funny if he was running something like Turbo-CNC in a DOS
window and just not getting any ramping as Windoz phases in and out ?

Neat trick with the headphones.

I just listen to AM and the soothing whine and whistles from the
noise is enough for me.

Dave