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stepstick trimpot not working

Posted by waste

waste

stepstick trimpot not working
June 02, 2012 07:22AM

Registered: 12 years ago
Posts: 65

I have a stepstick that its trimpot doesnt seem to respond when I turn it. the motor turns but the current doesnt increase. It seems like its in a minimum

is this a broken trimpot, a broken stepstick or just something that im doing wrong??

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waste

Re: stepstick trimpot not working
June 04, 2012 02:34PM

Registered: 12 years ago
Posts: 65

I managed to measure the pot, it was working corectly and the values were ok.

so this doesnt really make sense.

Its definately the stepstick, as I tried the same stepstick in different positions on my board and in all positions the pot was not responding

the stepsticks powers the motors, it just powers it an a very low value

is there any way to test anything??

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Traumflug

Re: stepstick trimpot not working
June 05, 2012 08:17AM

Registered: 13 years ago
Posts: 7,616

The Sanguinololu page has instructions on how to measure the reference voltage. This should work for a StepStick, too, but I have no idea where the test point is. [reprap.org]

Generation 7 Electronics	Teacup Firmware	RepRap DIY

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DeuxVis

Re: stepstick trimpot not working
June 19, 2012 07:18AM

Admin
Registered: 12 years ago
Posts: 2,569

Traumflug Wrote:
-------------------------------------------------------
> The Sanguinololu page has instructions on how to
> measure the reference voltage. This should work
> for a StepStick, too, but I have no idea where the
> test point is.
> [reprap.org]
> _current_limit_configuration

You can use the trimpot as a reference point on the Stepstick too : [reprap.org]

Most of my technical comments should be correct, but is THIS one ?
Anyway, as a rule of thumb, always double check what people write.