Posts made by ErlerPrint3D

Hi,
are there plans to implement input shapers for CAN extensions, such as 1HCL, in the future?
Thanks.

@T3P3Tony
Thank you for your quick reply. I find the visualization of the data very exciting, but I have no idea how to implement it. Can you please send me the link to the blog post.

Has anyone from the community already implemented this?

Hi,
I am currently building a large 3D printer with an axis system like the one used in the Annex-Engineering K3 (https://www.youtube.com/watch?v=75OxlE8eso8&ab_channel=AnnexEngineering). This means 2 axes for X and Y. The axes should run with quadrature encoders in closed loop mode (Duet 3 Expansion 1HCL). As I currently have to calibrate each motor individually and my system is relatively stiff, so I get backlash values of 0.25-0.35 (firmeware limited is 0.22) for the calibration movement (M569.6 P50.0 V1). Depending on where the machining head is positioned, the resistance for the motor is lower and I was also able to achieve values of 0.2. But I can't do that for every motor. I also use the maximum current for the motors and have also tried to calibrate a motor when all others are currentless to exclude the counter forces but without success.

Does anyone have any experience with this or any ideas what else I could try?

@dc42: Will it be possible in the future to calibrate axes with 2 motors at the same time?

Hello everyone,
I was at Formnext 2023 in November and took the flyer for data collection and reporting from the Duet3D stand (see the image below). I am currently building an axis system with a measuring system (Duet 3 Expansion 1HCL) and would like to use the visualization of the encoder data, but I can't find anything about it anywhere.

Has anyone already used this or will it only be available in the future?

@droftarts okay, thank you.

@bricor Thanks for your answer. As I said, I have tested it with M308 and it would be a solution, but I ask myself if there is another way. For example via the free Power IN. In addition, all inputs (I0_0 to IO_8) are used for endstops. Therefore I am looking for another input.

@ErlerPrint3D
I have already tested:

M308 S18 P "io3.in" Y "linear-analog" A "MySensor" F0

It works well but you have to convert the voltage from 0-10V to 0-3.3V. And I would like to avoid that.

Hello everyone,
I am looking for a way to read in an analog signal of 0-10V from a distance sensor and display it. I use the Duet 3 Mainboard 6HC and build a laser powder 3d printer. I don't need a heating bed for this and my idea is to use the free OUT 0 POWER IN for the analog signal. Is there any way to read out the voltage value. I have not found anything in the documentation.
Thanks

I removed the stepper driver from board (but I used a small side cutter) und the Wifi is now stable.
With M569 P3 R-1 i disabled the driver and now i get no more error message.
Thanks for your help

yes, i get also that error message when the E0 motor is disconnected. Do you think that after the removing of the stepper driver the wifi works correctly again?

Hello,
i think i destroyed my board by a short circuit .
I stupidly dropped a screw on the contacts of the TMC stepper driver when the board was switched on (see marking in the picture). I didn't have my cover on it.
Now I get the following error like in the picture and after a few minutes I lose the Wifi connection. I also watched the board with a thermal camera and the TMC2660 gets hot directly after switching on.
Can I switch off the stepper driver 3 and control my extruder with stepper driver 4?
And why do I lose the Wifi connection after few minutes?
Can I still save something or do I have to buy a new one?

The motors are moving and I'm so happy. Thank you for your help.
Perhaps in your documentation you could give a short explanation of the different manufacturers' labels, so that nobody else makes this mistake.
Bye.

I'm going crazy . Now of course everything becomes clear. I've already wired some motors at work but all manufacturers of stepper drivers have called the phases A and B. And because everything worked fine if I used both Z-contacts I never thought I had wired something wrong. Unfortunately, I can't test it until tomorrow because I'm building my printer at work. I'll let you know if everything worked fine. Until then many thanks for your efforts.

@dc42 @Surgikill For me the motors are all connected correctly and the resistances are right. To be on the safe side I have illustrated everything in the pictures. Maybe this will help us to avoid misunderstandings. Or I am simply too stupid for that shit.

@BPisLife I had already tested the motors with higher currents (as in the data sheet). Without success.

Okay, then I misunderstood that. However, I just don't understand why the motors work fine when I use both z-contacts.

Here are the new measurements:

• both Z-Motors (MT-1702E133G6-365E) --> between red and black or blue and green 2.1Ohm; other combination "infinity"
• both CoreXY-Motors (42BYGHM809) --> between red and black or blue and green 1.8Ohm; other combination "infinity"
• max. cable length is 600mm

First I checked the multimeter with a 750Ohm resistance and it works correctly. Then I repeated the measurements and measured 5MOhm again. The board was switched off. I think that was the mistake with the last measurement?

With the board switched on (only 24V) I measure everywhere infinity and between 2B(ZA)/2A(ZB) and 1A(ZA)/1B(ZB) no resistance (exactly -0.03Ohm).

Tomorrow I'll repeat the measurement and send you a picture.

I measure 5MOhm for every combination except if I remove the jumper then I measure as follows (only for the Z-contacts): 5MOhm between 1B+2A on ZA and 5MOhm between 2B and 1A on ZB and the rest is infinite.

additional: before the error message "short-to-ground" appears, the motor moves a very small distance and that's relatively loud

@dc42
Inside the printer i use standoffs only for the mounting holes and outside the printer i use cardboard under the board (see the pictures). By both variante the same error occurs. It is a genuine Duet from makerdise.com.
If I command X or Y movement with the no motors connected, I have no error message, only the warning see in the picture.