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dc42
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debojitk
Hi,
Thanks a lot for your suggestion.
Matching with my spec I found Nema 17 2.1 Ohm bipolar. It says the input voltage should be 2.8 volt.
I read that for DRV8825 the Vmot( min ) is >4v. So how this driver would be able to drive this stepper. I am confused here. Please help.
Thanks,
Debojit
I hadn't seen that part of the datasheet, perhaps they added it in a later revision. I think that limitation is to avoid the known problem with DRV8825 drivers. So pick a different type of driver.
I was reading through some blogs and post and found that there is a pot to adjust Vref which is related to output current. To keep the current constant it automatically adjusts the voltage to each phase. Could you please confirm if it is the case?
Thanks,
Debojit.