First Connection/communication whining noise

K8200 3D Printer K8200 - Assembly and user manual
1

Hi,

On first communication I went to manual control and moved the x, y and z axes around which worked but there is a whining noise
from the XXXXcontroller boardXXXXX (incorrect it was the motors). Is this normal behavior?

Thanks

2

If it’s coming from the board that is not normal.

After you move any of the motors they will make a whine for a little while because they will lock and hold their position.
In the manual section of the software there is a button “Turn Motors Off” click on that to see if the whining stops.

3

Thanks WrongWay for the quick response.

I went back a step or two and checked the voltage across ground and the test pins on the stepper motor boards.
they all vary 0.42V to 0.48V - Alas I’m using my best steak knife to adjust the pot. Maybe pay to get the correct implement and get these all reading the same voltage.

Like you said when I hit Turn off Motor the whining stops. Also if I do a random combination of moves sometimes it’s whining and other
times not. I feel a bit more confident to proceed on with the calibration - I’ll report back if anything changes.

TH

4

[quote=“tyharness”]Thanks WrongWay for the quick response.

I went back a step or two and checked the voltage across ground and the test pins on the stepper motor boards.
they all vary 0.42V to 0.48V - Alas I’m using my best steak knife to adjust the pot. Maybe pay to get the correct implement and get these all reading the same voltage.

Like you said when I hit Turn off Motor the whining stops. Also if I do a random combination of moves sometimes it’s whining and other
times not. I feel a bit more confident to proceed on with the calibration - I’ll report back if anything changes.

TH[/quote]

Do yourself a favor and set the stepper drivers to 0.55V instead of 0.425v.
The motors will run better then. Many users find the motors loosing steps at 0.425v.

Are you shure it is the board that makes the noise?
At least the x stepper motor is quite near the board if it’s mounted on the frame.

5

thanks ichbinsnur

Yep it’s my xmotor that whines rather than the controller board. I’ve increased the stepper motor driver voltage up to 0.55V

All the motors whine but the Xmotor is louder for some reason. I assume once I get going with a real job they’ll be no reason to
hold the x axis for an excessive period of time so I guess I wont notice it as much.