IDEX Backup mode (Hotend auto switch when one hotend is jammed)

selva_tvi

Hello all,

We have an IDEX machine.

Snapmaker J1 is having the Backup mode feature where whenever the filament is finished or Filament Jam in one hotend, then automatically the other hotend will come for printing.

https://shop.snapmaker.com/products/snapmaker-j1-independent-dual-extruder-3d-printer
Snapmaker Backup mode:
Backup Mode

Under Backup Mode, you print with one extruder while the other stands by. If the working extruder bumps into a hiccup, the stand-by one would take over the job seamlessly and still deliver a fabulous print to you.

Is it possible to enable this feature? Have anyone done this?

For ex:

The gcode for the Left hotend will be enabled with T0.
When there is a jam, then the Right Hotend has to be called and resume the same gcode.
Now the T0 to be replaced with T1.

Thanks in advance.

jay_s_uk

@selva_tvi you could use the events system and then if theres a stall perform a tool change
https://docs.duet3d.com/en/User_manual/RepRapFirmware/Events

o_lampe

@selva_tvi What jay said, but it should also work with filament runout sensors.

selva_tvi

@o_lampe @jay_s_uk thank you. will check and update.