I'm having some issues with a NEMA 14, DRV8825 build. Basically the motor just judders, unless i turn the motor delay down to 1000 - in which case it turns smoothly, but not always in the same direction!
I've got another setup with a NEMA17 PG27, which works flawlessly so im a bit stumped as to why I can't get the NEMA14 to work!! Am i missing something simple? Grateful for any input!!
Thanks
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but not always in the same direction!
is a tell tale sign that
1: the board wiring to the stepper is wrong.
2: the direction pin has an issue
An incorrect wiring will cause "shudder", which also has an issue with motor moving in one direction/
And that is why 1000 is also an issue - it should change when the stepper is moving correctly
I would look at the schematic for the stepper motor NEMA14 - it should tell you what the stepper wires are in color code, and which below to which coil. Its probable the colors are different.
Regards
Robert
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
I'm having some issues with a NEMA 14, DRV8825 build. Basically the motor just judders, unless i turn the motor delay down to 1000 - in which case it turns smoothly, but not always in the same direction!
I've got another setup with a NEMA17 PG27, which works flawlessly so im a bit stumped as to why I can't get the NEMA14 to work!! Am i missing something simple? Grateful for any input!!
Thanks
What is the current draw on the Nema14? some are higher than the driver board can cope with
also have you looked at adjusting the pot on the board?
but not always in the same direction!
is a tell tale sign that
1: the board wiring to the stepper is wrong.
2: the direction pin has an issue
An incorrect wiring will cause "shudder", which also has an issue with motor moving in one direction/
And that is why 1000 is also an issue - it should change when the stepper is moving correctly
I would look at the schematic for the stepper motor NEMA14 - it should tell you what the stepper wires are in color code, and which below to which coil. Its probable the colors are different.
Regards
Robert