Two issues - Loud motors and failing z probe (maestro)

Justin · 2 May 2020, 22:23

Alright, so my first mistake was not properly flashing the board with the latest firmware. I was able to jog the carriage and bed around before I properly flashed and noticed how silent the motors were. Then I flashed with 2.05.1 and the motors are making a noticeable noise. I checked M569 Pnn and it says stealth chop is enabled. Video linked on the imgur album.

Second issue, the first time I ran the bed mesh it came out fine. My bed needed some adjustment so I ran it again, but then it looked way off so I watched it the third time, and the nozzle was being pushed into the bed. The probe was triggering, and the web gui can see it triggering, but its only getting pushed into the bed on specific spots. Though that didn't happen at all on the first mesh. Photos linked in the imgur album below. I think its possible my ezabl may have taken a shit, though I am curious if this is an operator error.

https://imgur.com/gallery/Xw8sPVr

Thanks for your help in advance, loving the duet 2 maestro so far! The web gui is such a nice feature.

Justin · 3 May 2020, 05:04

I solved the crashing issue, I added grounding wires to the rails, and the frame. Though the motors are still louder than I was expecting.

dc42 · 3 May 2020, 18:50

Depending on what firmware you were using before you upgraded, the default setting for maximum stealthChop speed may be different. Originally we left stealthChop enabled even at quite high speeds; however that caused layer shifts for some users, because when using stealthChop the motor can't react to sudden increases in load, such as the nozzle hitting a blob on the print. Now we have it switch to spreadCycle at a much lower speed. That probably accounts for the noise increase.

You can configure the changeover speed using the V parameter of the M569 command, see https://duet3d.dozuki.com/Wiki/Gcode?revisionid=HEAD#Section_M569_Set_motor_driver_direction_enable_polarity_and_step_pulse_timing.

Justin · 3 May 2020, 22:13

@Justin said in Two issues - Loud motors and failing z probe (maestro):

I solved the crashing issue, I added grounding wires to the rails, and the frame. Though the motors are still louder than I was expecting.

Yes! This was the fix. Thanks for the help doc