Giving in and Reverting to Marlin/Ramps?

JoergS5

I wait for the answer of the expert, but for BLTouch: I ordered one for me now, so here are my help links I found yesterday in preparing:

https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe
Mode 9

Tutorials:
https://forum.duet3d.com/topic/452/bltouch-working
https://betrue3d.dk/bltouch-on-duet-wifi-duetreprapfirmware/
https://betrue3d.dk/bltouch-on-duet-wifi-configuratio-and-usage/

brunofporto

I migrate from Marlin/Ramps to Duet and it was not easy. But the potential of macros and fully gcode based configuration is so vast that I can not even think of rolling back

There was a lot of things, like unload and load a new filament, that I find it very difficult to implement with Marlin and now it is just a very clever macro that even asks me to confirm the insertion of a the new filament. My printer is so silent (of course you can achieve that with better drivers with the Ramps) that sometimes I tough that there was some issue.

Also the electronics and wiring does not look like a bad neighborhood in the Blade Runner universe like it was with my Ramps.

So... Finish your design and polish it. When you have time get the Duet again with more time to tweak it. When you get used o the configuration/macros things it will even feel (and be) much that recompile and rewrite your firmware every time you change something.

DjDemonD

Its a shame someone can't help you iron out the issues, my corexy when I swapped to duet just worked better than ever. True it was my second board and I had a handle on it at that stage, but if we look at your points in detail:

The extrusion is uneven and inconsistent
What microstepping are you using and what extruder? What motor current (is it 75%-80% of the motor's rated current?)

The BL-Touch has been a hassle and still is non consistent in its behavior
That's BLtouch for you, but I have managed to run one for testing purposes from duetwifi without any apparent problems.

Layer adhesion problems
That has nothing to do with the firmware, unless you are under-extruding or the nozzle isn't staying the correct height above the bed - probably related to bltouch issue.

Problems with using my 12V fans (as I do need for the blower!)
I presume you are running the duet on 24v, fans and different voltages are a challenge and the range of 24v fans is much more limited. I was using 5v fans until it killed 2 duets and 2 paneldues from a wiring short - won't make that mistake again. Get a few buck converter modules, there are detailed instructions to use them to get 12v PWM's fans from 24v supply.

The layerlines are very prominent
Got me on that one... could be a million reasons.

PID tuning problem - Warning??
What warning?

Thermistor issues - Beta value?? Do we really need to calibrate this as well?
Well no, I'd dump thermistors and go to PT1000s absolutely the easiest way to measure temperatures, just plug them in, add the correct line in config.g and you get known, predictable, (near) linear response to temperature changes.
I have calibrated thermistors using k-type thermocouples and measured resistance at known temperatures then used online calculators to get the beta value - but PT1000's are the way forward.

G29 S2/M561 Not clearing mesh? What is the difference and why do we have two options in the GUI??

I run this macro to do a mesh:
M561 ;disable compensation
G1 X135 Y97 Z5 F2000 ;move to bed centre
G30 ;set Z=0 level
G1 Z5 ;lift nozzle
G29 ;grid compensation
G1 X140 Y100 Z50 F2000 ;centre head

Then load it in config.g with
G29 S1.

I suspect any mesh issue you have relates to the BLtouch - have you considered a slightly more accurate probe?

If I had more time on my hands and you were not too far from me I'd come and help you iron it out and take a look at your printer which looks very interesting.

pro3d

Seems like a worms-nest...

Well thanks for trying to help out. I guess I want something more plug and play like Marlin does for me an it is easy to configure without all kinds of special equipment and macros or what ever

I would never be able to support my customers in RRF configurations as it is now and with Marlin it would be easy

I just want something simple that works with the equipment and components I have and are used to

It sounds like I need more expensive equipment and what not to get this right and use a lot of time tuning it when I just want to print good prototypes as I do with the old setup and same components

You say the BL Touch is not good enough? Then this must be related to the Duet/RRF as it works as a charm in other configurations

Then I need a PT100 board? Well here we go - adding more stuff I dont have and ever needed printing from from PLA to Polycarbonate and up to 275c no problem

Sorry I just want something that works on the printers I am building and supplying to others as well

I guess in this time next year I might have changed my mind but the thing is that the flexibility of the firmware seems to be the bottleneck in my mind

Just wonder what all the fuzz was about and still dont get it except it is very quiet...!

JoergS5

I would say some of problems are due to the extruder (layer lines, extruding uneven, layer adhesion). So I would test and calibrate it first, then Z-leveling with BLTouch.

I changed to 24V also and bought 24V fans to avoid the dangers of wrong wiring, it costs only a few bucks. But there are forum threads for wiring 12 or 5 V here also.

One about 12 V fan:
https://forum.duet3d.com/topic/1571/steppers-on-24v-and-both-permanent-fans-and-pwm-fans-on-12v

JoergS5

@pro3d You can connect PT1000 or thermistor directly, only for PT100 or thermocouple you need additional boards.

JoergS5

@pro3d I hope BLTouch is good because I bought it Presicision is 0.01 mm, this should be enough precision. I bought it because it works with all print bed types, glass or anything else.

pro3d

@joergs5 It used to be good before I converted to Duet. Now it seems like a bad probe...

I guess I just had to high expectations for this board and did not anticipate these problems I have run into and all the macro world I dont really like

pro3d

@djdemond How do I attach a PT1000 to the heater block? Or do I need another heatblock? seems like they are 4mm?

Dino

@pro3d if you're using an e3d hotend @DjDemonD sells the pt1000s on his web store.

https://www.precisionpiezo.co.uk/product-page/pt1000-sensor

pro3d

I also experience whining. I read about this on the trinamic 21xx but is this the same thing? They whine a lot I think. 24v 1200 mA

pro3d

One more thing I miss about this setup some camera solution. Seems like we need the rpi anyway or some wifi cam.

Or what do people do for camera?

Phaedrux

@pro3d said in Giving in and Reverting to Marlin/Ramps?:

One more thing I miss about this setup some camera solution. Seems like we need the rpi anyway or some wifi cam.

Or what do people do for camera?

I use a PiZeroW with camera module running MotionOS as an IP Cam. It works well for viewing, but no time lapse function.

There is currently no solution as easy as that provided by Octoprint.

T3P3Tony

@pro3d at certain microstep/current settings the Trinamic drivers have an audible whine when standing still (I have only experienced this when they are holding a position, not while moving). This is not unique to the Duet, but a "feature" of the drivers, however because we have SPI control of the drivers we have idle current reduction and standstill current reduction that drops the current by a configurable % when the stepper is stood still or moving very slowly. See:

https://duet3d.dozuki.com/Wiki/Gcode#Section_M906_Set_motor_currents
(the I parameter)

This is the percentage of normal that the motor currents should be reduced to when the printer becomes idle but the motors have not been switched off. The default value is 30% and always be at least 100mA.

https://duet3d.dozuki.com/Wiki/Gcode#Section_M917_Set_motor_standstill_current_reduction

This command sets the percentage of the current set by M906 that is to be used when the motor is stationary but not idle, or moving very slowly.

pro3d

@t3p3tony thanks. This is while moving for sure so maybe some other setting

T3P3Tony

@pro3d Odd, all reports we have are that with the TMC 2660s the steppers are significantly quieter while actually moving. are you using interpolation to 256 microstepping? Something like

M350 X16 Y16 Z16 E16 I1

The interpolation is set by the "I1" but it only applies at 16 microstepping.

pro3d

@t3p3tony
Yes it seems so

Drives
M569 P0 S1 ; Drive 0 goes forwards
M569 P1 S1 ; Drive 1 goes forwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S0 ; Drive 3 goes back
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X80 Y80 Z3200 E470 ; Set steps per mm
M566 X900 Y900 Z12 E300 ; Set maximum instantaneous speed changes (mm/min)
M203 X9000 Y9000 Z360 E1500 ; Set maximum speeds (mm/min)
M201 X1500 Y1500 Z250 E750 ; Set accelerations (mm/s^2)
M906 X1300 Y1300 Z1200 E1200 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

dc42

@pro3d, you can continue to use a thermistor if you want, but the firmware needs to know what its characteristics are just as Marlin does. The configurator allows you to select from a number of popular types, or to enter 3 points from the resistance vs. temperature table.

HTH David

pro3d

I thought I could just use the NTC3950 as normal but I understand it is more complicated

Also I wonder about the difference between M561 and G29 S2 in the GUI. Why are these to options there?

And sometimes it seems they dont clear out the compensation when when I home Z after using the GUI for these two options - Z should read the offset value but somehow reads different due to some compensation I guess?

dc42

Yes you can use a 3950 thermistor, just use parameters 100000 for the R25 value, 3950 for the B value and 0 for the C value in the configurator, or in the M305 command if you are setting that up yourself. You should be aware that as there is no resistance vs. temperature table published for those thermistors and the 3950 will be the B value at low temperatures, the temperature readings for the hot end at printing temperatures will be highly inaccurate no matter what firmware you use. That doesn't necessarily matter because you will need to experiment to find what temperature reading works for your hot end and filament anyway.
M561 and G29 S2 do exactly the same thing. M561 was implemented a long time ago. When we added G29 mesh bed compensation, we included G29 S2 because it is easier to remember than M561.

HTH David