@oliof That is a really good idea to rule out different possiblilites. im printing right now but later today i can try that. Thank you so much for your input and support.

@alankilian I might have found the problem.
I checked the resistances of the 5V signal wires
from the breakout board to the stepper drivers again and I found one cable that has infinite resistance.
It seems like it is one of the dir+- cables. So that would explain why the motor is running but cannot change its director.

At first I was expecting it to be the crimps or the connectors, but it appears that even with new crimps the cable is corrupted.

I'm checking in again in the evening and take a new cable, measure the resistances and hope that this solves to problem.

You can find some hardware source here: https://github.com/Duet3D/Duet-2-Hardware

@dc42 I experimented some more and came up with testing routine. Trying to set StealthChop to SpreadCycle at low speed. No luck... Or maybe at 10mm/s is all I can get?

Accel/jerk are halved in comparison to normal operation.

Each testing sequence consists of:

Configuration Homing with tuning Three sets of moves of Y and U separately Each set has different speed - 10, 50 and 100mm/s

It runs five tests with different configuration each:

StealthChop to SpreadCycle with switch at 10.4 mm/s StealthChop to SpreadCycle with switch at 52.1 mm/s StealthChop to SpreadCycle with switch at 93.8 mm/s Pure SpreadCycle Pure StealthChop

I've recorded a routine with first 3 sequences. Every time movement is above switch speed then "clack" happens. Its visibly less noticeable at low setting, but is still there. As it's increased then it gets much worse.

If you could look if I did homing/tuning correctly, please.

I'll proceed to experimenting with different speeds. Previously when I picked different values for M569 and M915 I've got some improvement - clacking was getting less and less visible.

Thanks for your time and input.

Video (last two removed for brevity):
https://youtu.be/yojaNXBJG9s

Macros:
stealthChop.home.g

; Homing and tuning M18 X U Y Z ; Disable motors M17 X U Y Z ; Enable motors G4 P100 ; Wait G91 ; Relative positioning G1 Z5 F1000 H2 ; Lift Z relative to current position G1 X-999 U999 Y-999 F3000 H1 ; Move and Tune G1 X5 U-5 Y5 F6000 H2 ; Go back a few mm G1 X-999 U999 Y-999 F360 H1 ; Move again G1 Z-5 F1000 H2 ; Return Z to previous height G90 ; BLTouch preperation M280 P0 S160 ; Precautionary alarm release M280 P0 S90 ; Ensure the pin is raised ; Home Z using the Z-Probe G91 ; Relative positioning G1 Z10 F1000 H2 ; Lift Z relative to current position G90 ; Absolute positioning G1 X-130 Y-115 F6000 ; Move T0 to probing point, including probe offset G30 ; Probe the bed and set Z to the probe offset G1 Z10 F1000 ; Raise Z off the bed

stealthChop.test.g

; Initial settings var distance = 30 ;mm var speed_high = 100 ;mm/s var speed_high_min = 60 * var.speed_high; var speed_med = 50 ;mm/s var speed_med_min = 60 * var.speed_med; var speed_low = 10 ;mm/s var speed_low_min = 60 * var.speed_low; G1 X-999 U0 Y0 F3000 ; Prepare for test G4 P1000 ; Test Low Speed while iterations < 3 G1 U{var.distance/4} F{var.speed_low_min} G1 U{-(var.distance/4)} F{var.speed_low_min} while iterations < 3 G1 Y{var.distance/4} F{var.speed_low_min} G1 Y{-(var.distance/4)} F{var.speed_low_min} ; Test Medium Speed while iterations < 3 G1 U{var.distance/2} F{var.speed_med_min} G1 U{-(var.distance/2)} F{var.speed_med_min} while iterations < 3 G1 Y{var.distance/2} F{var.speed_med_min} G1 Y{-(var.distance/2)} F{var.speed_med_min} ; Test High Speed while iterations < 3 G1 U{var.distance} F{var.speed_high_min} G1 U{-(var.distance)} F{var.speed_high_min} while iterations < 3 G1 Y{var.distance} F{var.speed_high_min} G1 Y{-(var.distance)} F{var.speed_high_min}

stealthChop.spreadCycle.test.g

; RR VCast IDEX (Cartesian) ; Duet 3 6HC TMC5160 ; Testing U and Y ; XUY using 2.5A/3.1V LDO-42STH47-2504AC ; https://www.ratrig.com/nema-17-stepper-motor.html ; 1. Load StealthChop to SpreadCycle settings ; 2. Tune drivers ; 3. Run test for StealthChop to SpreadCycle ; 4. Run test for StealthChop only ; 5. Run test for SpreadCycle only G4 S5 ; Time to start recording :) ; Accel/Jerk are halved in comparison to normal operation M906 X2125 U2125 Y2125 Z1600:1600 E350:350 I50 ; set currents M566 X350 U350 Y350 Z60:60 E300:300 ; set maximum instantaneous speed changes (mm/min) M203 X6000 U6000 Y6000 Z1800:1800 E3600:3600 ; set maximum speeds (mm/min) M201 X400 U400 Y450 Z100:100 E600:600 ; set accelerations (mm/s^2) M204 P400 T400 ;------------------------------------ ;---- StealthChop to SpreadCycle ---- ;------------------------------------ echo "Enable StealthChop to SpreadCycle settings (Switch Speed - 10.4 mm/s)" ; Reset Coolstep M915 P0.0:0.1:0.2:0.3:0.4:0.5 T1 ; disable coolstep M915 P20.0:21.0 T1 ; disable coolstep ; Set U M569 P0.1 S0 D3 V900 H900 M915 P0.1 T900 ; Set Y M569 P0.2 S0 D3 V900 H900 M915 P0.2 T900 ; Homing and tuning M98 p"/macros/stealthChop.home.g" M98 p"/macros/stealthChop.test.g" echo "Enable StealthChop to SpreadCycle settings (Switch speed - 52.1 mm/s)" ; Reset Coolstep M915 P0.0:0.1:0.2:0.3:0.4:0.5 T1 ; disable coolstep M915 P20.0:21.0 T1 ; disable coolstep ; Set U M569 P0.1 S0 D3 V180 H180 M915 P0.1 T180 ; Set Y M569 P0.2 S0 D3 V180 H180 M915 P0.2 T180 ; Homing and tuning M98 p"/macros/stealthChop.home.g" M98 p"/macros/stealthChop.test.g" echo "Enable StealthChop to SpreadCycle settings (Switch speed - 93.8 mm/s)" ; Reset Coolstep M915 P0.0:0.1:0.2:0.3:0.4:0.5 T1 ; disable coolstep M915 P20.0:21.0 T1 ; disable coolstep ; Set U M569 P0.1 S0 D3 V100 H100 M915 P0.1 T100 ; Set Y M569 P0.2 S0 D3 V100 H100 M915 P0.2 T100 ; Homing and tuning M98 p"/macros/stealthChop.home.g" M98 p"/macros/stealthChop.test.g" ;------------------------------------ ;---- SpreadCycle only ---- ;------------------------------------ echo "Enable SpreadCycle settings" ; Reset Coolstep M915 P0.0:0.1:0.2:0.3:0.4:0.5 T1 ; disable coolstep M915 P20.0:21.0 T1 ; disable coolstep ; Set U (Factory values) M569 P0.1 S0 D2 H200 M915 P0.1 T2000 ; Set Y M569 P0.2 S0 D2 H200 M915 P0.2 T2000 ; Homing and tuning M98 p"/macros/stealthChop.home.g" M98 p"/macros/stealthChop.test.g" ;------------------------------------ ;---- StealthChop only ---- ;------------------------------------ echo "Enable StealthChop settings" ; Reset Coolstep M915 P0.0:0.1:0.2:0.3:0.4:0.5 T1 ; disable coolstep M915 P20.0:21.0 T1 ; disable coolstep ; Set U (Above 100mm/s) M569 P0.1 S0 D3 V50 H50 M915 P0.1 T50 ; Set Y M569 P0.2 S0 D3 V50 H50 M915 P0.2 T50 ; Homing and tuning M98 p"/macros/stealthChop.home.g" M98 p"/macros/stealthChop.test.g"

@duet3questionmaster

Perhaps you could post some pictures of the device?

Frederick

@verminsup First, are you SURE those are BLDC motors?

I see a ribbon cable coming out of the encoder, and a two-wire connector coming out of the back of the motor, so I think they are DC motors with an incremental encoder.

Let's start there and see what you need for a motor-position controller after determining what kind of motor you have.

If you can post:

What Stratasys machine you are trying to convert Links to any documents for that printer Close-up photographs of the motor connections Names, numbers or other markings on the motors you are trying to control

It would help a LOT.

@dc42 Thanks!

@3dpnut said in Duet2 Wifi Driver 3 overheat issue:

Also, Drive 3 (the bad one) still gets hot.

you might be able to desolder the chip

SG= stallguard. See page 10 of the datasheet i linked above.

10-bit unsigned integer stallGuard2
measurement value. A higher value indicates
lower mechanical load. A lower value indicates
a higher load and therefore a higher load angle.
For stall detection, adjust SGT to return an SG
value of 0 or slightly higher upon maximum
motor load before stall.

Well I "solved" the issue.

I uncommented the dual extrusion code in my config.g, and the extruder started working.

Bafflingly, I tried commenting out the dual extrusion code again to see if the issue came back, and it didn't. So I'm running the same config.g as above, with no other hardware or software modifications and the extruder works fine. I'd tried multiple config modifications before to no avail, and rebooted it many times prior to this. So I have no idea what the issue was, or why it disappeared, but it's gone now.

@dc42 said in Burnt Y-Axis Motor on brand new board?:

It sounds like an infant mortality failure of the driver chip. Assuming it's a genuine Duet, your board will be replaced under warranty. Please contact your supplier.

Thanks for the prompt response. I imagine this is a rare fault?

I will head over to the original supplier tomorrow and complete the warranty.

@bearer I don't disagree, just caution that heat sinks need to have good contact to actually sink heat otherwise they can do more harm than good.

@Veti I just tried this but now I can't control my Y axis. Would you be so kind as to tell me what g-code I can send to undo this? Thank you!

Awesome!!! Thanks so much 😀

Was just the driver for me, dc42 told me to remove plastic molex near by becuase they will get crispy.
150c hot air will get them off slowly with pliers.
Find my post there is info that will help you there.

Thank you to everyone for the help I'm getting decent prints now I'll probably hooking up the bltouch in a day or so hope u can handle that by my self but I'm not holding my breath. Lol