@Mr-Crispin he has done the kinematics calculations in his gcode generation program. so in this case the Duet does not "know" its multi axis printing. @JoergS5 has done some work in implementing variations of robot kinematics that run on the Duet boards themselves.

@shaunppl this is the subject of a feature request:

https://github.com/Duet3D/RepRapFirmware/issues/780

T3P3 created this issue in Duet3D/RepRapFirmware open Support configuring an axis as "continuous rotary" #780

@o_lampe Separate thread now created - over here
https://forum.duet3d.com/post/349140

Would be interested in your thoughts on how do to the Z hoppers.

@gloomyandy Sorry no idea about G38.2 I've never used it.

@Carter3DP you will need to reverse the direction of the homing moves for the proximal and distal motors, and switch the proximal and distal homing switches over from low to high end or vice versa.

@fromwastetowind I think this is an 'inverse' Polar printer, and it is irrelevant to the firmware if it is the crane that rotates or the bed. The nozzle just needs to travel along a line drawn between the centre and the circumference, ie along a radius line.

See https://docs.duet3d.com/User_manual/Machine_configuration/Configuration_Polar

Apart from the links already mentioned, there was a similar printer design (though running on a hacked version of Klipper) at SMRRF: https://www.youtube.com/live/Hlw3mt-x0nE?si=amwlz8DMR0daYQjS&t=1437

You should be able to put a print anywhere on the bed, just not in the centre. M669 Raaa:bbb defines the minimum and maximum radius in mm.

Ian

@OttoJiang I don't recommend it, because this kinematics is only one of several ones of robotics kinematics. When they are complete, we can github it.

As an overview please see https://docs.duet3d.com/User_manual/Machine_configuration/Configuring_RepRapFirmware_for_a_Robot_printer with additional documentation pages.

@dc42 can i have an answer please?

@Toaster0042 you're right, I should inform, I will prepare an update.

@dc42 Thank you for the response. I will attempt this.

Sorry I forgot you were working with external drivers here.

As this thread has grown to nearly 100 posts and has involved several issues, I think it may be best if you can create a new thread with a detailed restatement of your current issue. Please include the basic details of your setup and the hardware used. Please include your config.g as well.

@Texas_Mike please share config.g and homing macro files (home/y/z/e/f.g, and homeall.g).

@David-Piska said in Clog detector make random filament missing errors:

thanks to Modix3D support for idea to check M600 command.

Good catch! Sometimes the simplest answer is the best. Often we look for more complicated reasons! The 'error' (not an error, it's doing what it's told to do) message should have been the clue...

Ian

@__noemy__ send M115 to see if it reports the DueX5. If the response doesn't mention it then check that the ribbon cable is connected properly and that power is applied to the DueX5.

@Mafco77 thank you for using the kinematics and nice to hear that you're using it successful.

I probably have implemented the homing of CoreXY wrong somewhere. I'll check it. But please be patient for solving this, it's not the highest priority and you have a workaround.

@trulm to do that you have to start the macro (very rudementary explained) with splitting the z steppers into individual axis. Then assign the movement you want on each of those three axis, then when the movement is done you make each of the axis return to the starting point and combine all the threesteppers back into being Z. And "hide" the two axis you created in step 1.

@JoergS5 Ok, thank you! I'll post here if I have any updates

@MaxGyver that's interesting, thank you for the video link.

Maybe I reference my hashPrinter here, just in case someone wants to have 4 printheads and needs inspiration...

There is a thesis of Grutle https://www.duo.uio.no/handle/10852/47652 from 2015 which is similar to Open5x and interestingly used Duet hardware. It offers additional information about ABC to IJK conversion and printing results.