Re: Focuser for MaxEsp3


Howard Dutton
 
Edited

On Mon, Jul 19, 2021 at 12:26 PM, Seven Jones wrote:
The only problem is that the NEMA17 becomes very hot. I've left the Vref already down to 0.5V.
Well DRV8825's are usually Vref x 2, so you probably set 1A.  There are plenty of stepper motors that are rated for < 1A and will get mighty hot or damaged (given enough voltage into the driver for it to do what you're asking.)  That last part about the voltage is due to the fact that's it's impossible to overpower a stepper motor if operating below the rated (design) voltage.

Provide electrical specifications for the motor, also the voltage you're running it at.

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