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Can TMC2100 drive Nema17 stepper ?

Posted by DaveOB 
Can TMC2100 drive Nema17 stepper ?
April 27, 2017 05:50PM

Considering the TMC2100 driver for my i3 that has Nema17 1.7A steppers.

I see the specs on the TMC2100 drivers are :
I see the specs of the TMC2100 list :
Default Vref is 0.65v, Max 1.3V,Min 0.
Default Current is 0.5a, Max current is 1A ... does this mean that I can not run my steppers using the TMC2100 driver ?
Re: Can TMC2100 drive Nema17 stepper ?
April 27, 2017 06:41PM
It means you cant achieve maximum torque with those steppers and drivers.

If it will work depends on the friction involved on each motor/axis and the torque delivered at the current provided.

easiest just to try it...
Re: Can TMC2100 drive Nema17 stepper ?
April 27, 2017 06:51PM
My experience is that they might work but there is a sweet spot at which they will work, but you can be just fractionally either side of that spot and they wont work. There is a thread about them.

If the current is too low the torque is not enough and they skip steps, if its too high they get too hot and skip steps.

Simon Khoury

Co-founder of [www.precisionpiezo.co.uk] Accurate, repeatable, versatile Z-Probes
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