@dc42 Thanks. Is there anything else you could give to help on this quest? Schematics of the poll and how to read the status for each stepper, for example?
For now, I downloaded the TMC 2660 docs and will start with that. I appreciate your time. @Phaedrux, thanks as well!.
If I make any progress, I will post about it here.
@Phaedrux Yeah, already did. It seems like Klipper looks for the signal coming from the SG_TST pin, which seems to be PB5 for all steppers.
I wanted to find out the approach used by RRF so I can try to amend the code and add a PR to Klipper repo.
I am not very good with electronics, but I am an SWE. So if I understand the mechanism, I think I may be able to add this, solve my problem and help other folks in the same situation as I am.
Re: Anybody using a Duet board with a Klipper SBC?
Does anyone know how to enable stall guard or sensorless homing in Klipper when using Duet2 wifi? I have looked around, and what I found so far isn't very promising:
github.com/Klipper3d/klipper/issues/3298
Since it works with RRF, I don't see why it can't work with Klipper.
I can't use RRF because my toolhead uses CAN bus (SB2209). I looked at schematics, 3 different ones for Duet2, but found nothing that isn't in the GitHub post.
Pin PB5 current doesn't seem to change from the regular 1.5v on stall guard enable, which doesn't trigger the home position.
Any help appreciated, as I want to avoid the extra wiring, and I don't need the extra precision of endstop switches.
Thanks!
@Phaedrux So simple, it worked perfectly.
It was probably my mistake, thanks.
Hi everyone,
I have a Duet2 Wifi 1.03.
I am having a strange part cooler fan behaviour after upgrading RRF 3. It all worked fine on RRF2.X and 1.X no hardware changes.
I re-did the online configurator since some things changed and the BLtouch wasn't working, now everything is working but the tool head fan.
I have the hotend fan is thermostatically controlled and should come on at 45C plugged on FAN1.
The tool fan (FAN0) should work independently but it only turns on at 45C as well (thermostatic control is off), it never turns off even with an M106 S0. But it will come off if the head is below 45C.
This is my config file.
; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.2.2 on Sun Feb 14 2021 15:34:33 GMT-0600 (Central Standard Time)
; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"Duet Wifi" ; set printer name
; Network
M552 S1 ; enable network
M586 P0 S1 ; enable HTTP
M586 P1 S0 ; disable FTP
M586 P2 S0 ; disable Telnet
; Drives
M569 P0 S0 ; physical drive 0 goes backwards
M569 P1 S1 ; physical drive 1 goes forwards
M569 P2 S1 ; physical drive 2 goes forwards
M569 P3 S0 ; physical drive 3 goes backwards
M584 X0 Y1 Z2 E3 ; set drive mapping
M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z400.00 E154.30 ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min)
M201 X900.00 Y900.00 Z50.00 E250.00 ; set accelerations (mm/s^2)
M906 X1200 Y1200 Z800 E1200 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout
; Axis Limits
M208 X-20 Y-8 Z0 S1 ; set axis minima
M208 X220 Y208 Z200 S0 ; set axis maxima
; Endstops
M574 X1 S1 P"!xstop" ; configure active-high endstop for low end on X via pin xstop
M574 Y1 S1 P"!ystop" ; configure active-high endstop for low end on Y via pin ystop
M574 Z1 S1 ; configure Z-probe endstop for low end on Z
; Z-Probe
M950 S0 C"exp.heater3" ; create servo pin 0 for BLTouch
M558 P9 C"^zprobe.in" H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X27.3 Y0 Z0.0 ; set Z probe trigger value, offset and trigger height
M557 X0:200 Y0:200 S30 ; define mesh grid
; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0
M307 H0 R0.490 C63.9 D9.77 S1.00 V24.2 ; enable bang-bang mode for the bed heater and set PWM limit
M140 H0 ; map heated bed to heater 0
M143 H0 S110 ; set temperature limit for heater 0 to 110C
M308 S1 P"e0temp" Y"thermistor" T100000 B4138 ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 R5.496 C93.6 D2.04 S1.00 V24.3 ; disable bang-bang mode for heater and set PWM limit
M143 H1 S280 ; set temperature limit for heater 1 to 280C
M307 H3 A-1 C-1 D-1 ; Disable the 7th Heater to free up PWM channel 5 on the Duex board.
; Fans
M950 F0 C"fan0" Q100 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 L0 H1 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 L0 H1 T45 ; set fan 1 value. Thermostatic control is turned on
; Tools
M563 P0 D0 H1 F0 ; define tool 0
G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets
G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C
; Custom settings are not defined
; Miscellaneous
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
T0 ; select first tool
I can control the fans speeds with the slider in the web GUI if the hotends are above 45C, if the hotend is below 45C the slider control doesn't do anything.
I have looked for answers and read the docs, but I can't seem to find a solution.
Thanks in advance!
Well I was printing to make a video, but I don't know how yet the problem is gone. I assume so far that the previous 6mm bearings (Brass bushings) where the problem. Printed 6h no problem.
Thanks for everyone that helped! Also if you have a similar printer this link will help you a lot!
https://support.3dverkstan.se/article/23-a-visual-ultimaker-troubleshooting-guide
@phaedrux The Rods have no groves and aren't bent (At least to my ability to check it, I am no professional).
The bearings slide free, and if I remove the carriage and belts, gravity alone moves the sliding blocks and the bearings.
I will try to make a video and post it.
Thanks for the help so far!
@wyvern I did a very thorough mechanical check and found one belt that was tighten on the slider side and a bit loose on the "free" side (Where it runs parallel to the slider block), As I had a new set of belts and the ones on it a very old give or take 5 years, I ended up replacing them all and adjusted tension on every component.
The rods are straight and I think that the real mechanical problem I had where the brass bushings, that I replaced by actual ball bearings.
That gave me a much better result.
Another thing I did was upgrade the firmware and the config changes suggested above.
The printer runs a bit louder, but reasonably quieter than my older printer. Probably the ball bearings.
I will keep testing and calibrating it. Will post the results.
Replaced the bearings, Even tough the problem, is not solved, I think the mechanical part of it is. The motion system moves so smooth now, I dont think it has ever been that smooth. The printing results are 50% better. But there is still the jittering. I don't understand.
Well I will keep on investigating. Just FYI the printer has no printed parts other than the fan duct.
I swapped the extruder carriage for a printed part in hopes the softer material would align the rods better, but same result. The previous one was a aluminum milled one.
I will post any changes.
Well I checked all the pulleys and replaced the belts, adjusted the tension on the small bets that go from the X / Y motor to the 8mm shafts.
Updated the firmware, and reverted the config to 169microsteps interpolated. Got the exact same result.
Printing id very jerky, the slicer does a fast perimeter and them a couple of slow ones, the fast one is very smooth and noiseless but the slow ones are jerky and very noisy.
My Steppers are 1.8º rated for 1.7A, but the one on the Z axis is rated for 1.2A.
This printer used to be very very quite after I installed the duet board and gave me many beautiful prints with no problems at all and a very smooth surface finish.
I don't know if I changed a config that did all this, but I cant find the source cause of the issue.
I have new bearings for the sliders and Extruder cariage. Will replace those and see what happens.