Hi,
I can’t seem to find an answer to my question in the forum.
I understand that the Big Easy Stepper Motor Driver can be used to control stepper motors of a lower voltage than the minimum M+ voltage, by limiting the current on the Vref pin. Ex. I have a stepper motor rated for 3.9V with Imax (per phase) of 600mA. I know I should be able to run the motor at, say 8V, as long as I adjust the current pot. I followed the datasheet for the controller and did the calculations for Vref to find the value that the pot should be set to. According to the motor driver schematic, the pot is supposed to be 10K ohms. But when I read the resistance, it seems it toggles around 3K ohms. Is there a problem or am I missing something? I would like to set the pot BEFORE I hook up my motor so I don’t burn it out.
Thanks
Hello,
We have contacted the manufacturer and asked for the information you requested. We will get back to you as soon as we get a reply.
Please let us know if we can assist you any further in the meantime.
Sincerely,[font=Helvetica Neue, Arial, Helvetica, sans-serif][size=4][highlight=#f8f8f8]
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