Re: [APML] Stepper motor speed controller?

[George Anderson <tillerman1@videotron.ca>]

Hi Brian

Trust me, I have seen a lot worse moves than what happened to you. Watch
out for crazy glue near optics. It outgases as it cures and will cause a
bloom (fog) to harden on optical surfaces (ok, any surface). Watch an
episode of CSI to see how they use crazy glue in a fuming chamber to get
fingerprints.
You have the right photo for the potentiometer, now you just need to
find out the correct value. If there are no visible markings on the body
then you will have to go the multimeter route as someone else has
suggested.
If you find out the value and cannot find one which is the same size
physicaly you can always add a few inches of wire and run the leads to
the outside of the case and mount the pot there. You are not dealing
with very high frequencies and the little bit of capacitance from the
wires won't cause you any grief.
As someone else has suggested see if there are any ham radio operators
nearby, you might be able to swap some viewing time for some
soldering/meter time.

George Anderson
Montreal Canada

Clear skies and good health

Brian larmay wrote:
> 
> Hi George,
> 
> > Hi Brian
> >
> > You may be able to just replace the potentiometer in
> > the drive
> > controller if it is just the shaft that was snapped
> > off.
> 
> Well originally it was just the shaft that just broke
> off..
> I tried supergluing a piece of allen wrench in there,
> but then it froze the insides of the dial by the
> excess glue.
> What a bonehead move!
> A few choice words did not fix it.
> Im currently looking up what a potentiometer is.
> So far it looks like the dial that im referring to.
> In fact it looks like this:
> 
> http://images.google.com/imgres?imgurl=http://www.technolab.org/Bilder/pic-hako/Hako441a.JPG&imgrefurl=http://www.technolab.org/Hako/Katalog-e/Section6.htm&h=226&w=226&sz=13&tbnid=6PpSubPyyDcJ:&tbnh=103&tbnw=103&hl=en&start=18&prev=/images%3Fq%3Dpotentiometer%26svnum%3D10%26hl%3Den%26lr%3D%26sa%3DN
> 
> 2nd row of pictures from the bottom.
> Sorry for the long url.
> 
> > Open the box
> > and see what numbers are written on the pot. You
> > might be able to bodge
> > in an off the shelf pot to replace the broken one.
> > It would be a lot
> > easier than trying to figure out the number of steps
> > for the stepping
> > motor and the gear reduction to the output.
> > Are you guiding in only one axis?
> 
> Yes, only one axis and I manually correct the other.
> 
> Brian
> 
> >
> > George Anderson
> > Montreal Canada
> >
> > Clear skies and good health
> >
> > Brian larmay wrote:
> > >
> > > Thanks guys.....
> > >
> > > I feel like im heading in t
> 
> 
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