@dc42
Okey, to begin with a big thanks for your attention!!!

My next questions about polar kinematics are:

How I can define the rotative-origin of the rotative axis (≈center of the bed)?
It's my biggest mystery... In polar we have max and min radius, and the center is in the middle.
But I have my min_rad at 10cm from my real rotatory center and max_rad at 30cm from it. My case is a donut work zone (or just part of it, 90deg for start )

In the rotative axie, where do we use mm and where degrees?
In config.h there is only mm (ej: M566, M92) so I can understand that in M208 we should to write Y__mm instead of Y__degree.
But at the homing files we are working at degrees.
So I need to calculate mm from degrees? How I can take step/mm for rotative axie?

If I use external drivers, should I use M350, M906, M84?

There is core files I should to check exept homing files?

Waiting for a response

Sincerely

Alexander

thank you to all and to the group👍 😁

@rushmere3d said in GCODE Thumbnails not visible:

@thedragonlord Not sure on max size, you can actually input two sizes in that box for example 16x16, 128x128.

Thank you very much!

@haggan90 thanks, I'll mark this as solved. If you don't resolve the issues with the endstops, please start a separate thread for that.

@dido8884 said in WiFi Issues - "Network Error" on uploading almost every file:

I had this situation because of the long file name.😲

From https://docs.duet3d.com/en/User_manual/Reference/Gcodes#filenames-and-paths

Full paths, including all directories and subdirectories are limited to 120 characters. e.g.:
0:/gcodes/0123456789/012.gcode
counts as 30 characters

Ian

@dc42 said in multi relay boards and a Duet:

the signal on pin 4 of a 5-pin IO connector when high is 3.3V from the microcontroller through a 470 ohm resistor. That may or may not be enough to trigger the relay board.

That worked perfectly (once I got the pin name right and figured out that the 'invert' command is '!' and not '^')
Thanks again!

@o_lampe I guess you've missed the but in my answer, a USB stick will be used.

@gbusy24 glad to hear it

@jay_s_uk Ah....yes I may simply have my signage inverted....let me try that!
.....goes to try it....

Yes, that was it! How embarrassing! Thanks for the steer though!

So glad I found this post after struggling with this sensor.

I ended up sistering a 1.5k resistor across the existing 4.5k SMD resistor for a combined resistance of 1.1k. The sensor now works correctly with all LED indicators also still functioning.

This is the Gcode command I used for RepRap 3.2
M591 P2 C"e0stop" S1 D0 ;Filament is out when switch is Low, Extruder 0

2757d12b-9e06-4fc6-9134-b2d360238963-image.png

@dvd479 How wide are print lines? How tall is the print?

In the first picture, the wood-grain waviness is often due to the extruder gears. I don't know of any cure for it except maybe to use an extruder with a very high gear reduction, and even that might not solve the problem.

If the print wall is thin, as the print gets taller it will distort under its own weight and create the sort of waviness in the second picture. In the past I tried printing tall vases with a 0.5 mm wall and they got very bad as they got taller. Now I routinely print 600 mm tall vases with 1.2mm wall thickness (1 mm nozzle) without such problems.

@sgk HwVideoEditor_2022_09_07_210431573.mp4

@yao What you are looking for is called "extrude factor override percent". https://docs.duet3d.com/User_manual/Reference/Gcodes#m221-set-extrude-factor-override-percentage

I don't think there is anyway to adjust that for all extruders concurrently using the web interface. I guess that would a useful feature to have, just like we can extrude from any combination of extruders or "mix".

The only thing I could suggest is that you send M221 from the console but the documentation isn't clear if you can use comma separated values to specify multiple extruders or not - e.g. M221 D0:D1:D2:D3 Snn would do what you want if multiple extruders are acceptable in that command. All I can suggest is that you try it and see.

Otherwise, you could use multiple commands and wrap them in a macro.

e.g.
;macro to set all extruders to 95%
M221 D0 S95
M221 D1 S95
M221 D2 S95
M221 D3 S95.

Rather than create a number of such macros, you could use a global variable to specify the extrusion multiplier.

e.g. M221 D0 S{global.ExtrusionMultiplier} etc...

It's messy I know but offhand, I can't think of anything better. Maybe someone else will....

@mikeabuilder Thank you very much for your help, I will take a closer look.😀👍

@sgk yes no more error closed this post thank you😀👍

You can edit the config.g manually to change it.

@sgk
no more errors regarding this post thank you all for your help

I would add that it's the temperature of the filament inside the nozzle that is important, and that taking the measuring of the outside of the nozzle is probably the worse place. A while back I did some work to assess the affect of deflected part cooling air on the temperature inside a nozzle and saw temperature drops of up to 20 deg C with a steel nozzle. https://somei3deas.wordpress.com/2020/05/21/the-effect-of-deflected-part-cooling-air-on-brass-and-steel-nozzle-temperatures/

I dread to think what the measured temperature on the outside of the nozzle have been.

@p8blr said in Heater Overshoot:

@deckingman OMG that's got to be it! I feel so stupid... I totally forgot that I changed from a 12V to 24V PSU... Thanks so much!

Don' feel stupid - to err is human so we all make mistakes from time to time. Your 50W 12V heater will actually be 200W when you feed it 24V so that'll explain why it overshoots - I bet it reaches temperature pretty quickly though 🙂

Don't be tempted to try and tame it by reducing the PWM value. Whilst 25% PWM would mean that it's on for 25% of the time and off for 75%, it'll still be getting full power when it's on and if a Mosfet failed "On", things will get very hot, very quickly.

@p8blr The new firmware fixed the issue! However, now I'm getting weird PID autotune errors, so I may make a new thread for that topic. Thank you for your help!