Have you used the erase jumper or button on the Duet to clear the firmware yet?

If you already have a working firmware on the board you don't need to erase it like that.

Please try following these procedures #1 and if that doesn't work, proceed to #2.

https://docs.duet3d.com/en/User_manual/RepRapFirmware/Updating_firmware#fallback-procedure-1

@phaedrux said in Formbot T-Rex 3 Duet upgrade:

You should probably start a new thread.

ok, I try it.
thanks

@bearer said in Duet3 setup requirements for 3D printer:

Slightly OT, but as the Pi image has a FAT /boot partition it could possibly contain the default standalone config and files so the same card could maybe cover both use cases.

That's really clever.

@stan said in Changing TMC2660 into TMC2130:

Then i'll try to change the Z and Y then in the slicer.

No no, not in the slicer. You will define which motor/driver is assigned to which axis in the configuration file with M584.

https://duet3d.dozuki.com/Wiki/GCode#Section_M584_Set_drive_mapping

Now would be a good time to start going through some of this documentation:

https://duet3d.dozuki.com/#Section_Getting_started_with_the_Duet_WiFi_or_Ethernet

https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwareCartesianPrinter

So today I have calculated my steppers for XY that I have right now:
Approximate peak back EMF due to rotation per motor: 7.8 V at 200.0 mm/s
Approximate peak back EMF due to inductance per motor: 1.9 V at 200.0 mm/s
Step pulse frequency: 18.8 kHz at 200.0 mm/s
Speed at which torque starts to drop (low slip angle): 174.2 mm/s @ 23.2 kHz
Speed at which torque starts to drop (high slip angle): 236.8 mm/s @ 31.5 kHz

This means that I don’t need to change them? And how to take into account weight of the carriage?

P.S.:
One more crazy idea was to split carriage for 2 independent extruders. But that will give me more weight on Y axis..