Hi Robert. I have made a focuser with an Arduino Pro Micro + DRV8825 (firmware 330). Everything works well, but I find it strange that, at the end of any movement, a sound can be heard in the motor/driver. Is this normal? Can something be modified in the code? I'm sending a video where you can hear it. https://drive.google.com/file/d/1jHl46D0PQObOcBcNFsVWoxEjMIYNci-5/view?usp=drive_link
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Hi Carlos
That noise is coming from the stepper motor, and is related to the current setting on the DRV8825. Very Very small changes on the POT of the DRV8825 can reduce it a little. I did have that issue on one of my controllers. In my case I adjusted the current to reduce the sound.
i believe it is caused by the current being too low, and the stepper driver DRV8825 has the motor coils oscillating between steps, vibrating between the steps.
Do you use micro-stepping?
Eventually I gave up adjustung the POT and just replaced the DRV8825 driver chip
Regards
Robert
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Hi Robert. I have made a focuser with an Arduino Pro Micro + DRV8825 (firmware 330). Everything works well, but I find it strange that, at the end of any movement, a sound can be heard in the motor/driver. Is this normal? Can something be modified in the code? I'm sending a video where you can hear it.
https://drive.google.com/file/d/1jHl46D0PQObOcBcNFsVWoxEjMIYNci-5/view?usp=drive_link
Hi Carlos
That noise is coming from the stepper motor, and is related to the current setting on the DRV8825. Very Very small changes on the POT of the DRV8825 can reduce it a little. I did have that issue on one of my controllers. In my case I adjusted the current to reduce the sound.
i believe it is caused by the current being too low, and the stepper driver DRV8825 has the motor coils oscillating between steps, vibrating between the steps.
Do you use micro-stepping?
Eventually I gave up adjustung the POT and just replaced the DRV8825 driver chip
Regards
Robert