Correct Config since shared_heater: is depreciated

Basic Information:

Printer Model: Ender 3 upgraded to 3 in 1 out mixing extruder
MCU / Printerboard: upgraded to Big Tree Tech GTR V1.0 With M5 Expansion Board

Describe your issue:

I have a 3 in 1 out mixing hot-end. I love Direct drive so I put 3 pancake motors next to the hot-end to give that last little push/pull right at the hot-end. The pancakes aren’t capable of fully driving the filament, so I have 3 full size nema 17 to give that strong push. since the power motor and the pancake are so different, and I have plenty of drivers on the GTR, I have opted to drive them each with independent drivers. Everything was working well until I upgraded klipper and found that shared_heater is depreciated and no longer works. I am still able to sync both motors for Extruder0, however I can’t find any useful way to sync up both motors for the other 2 extruders.

If I try to configure Extruder1 normally, Klipper expects a heater pin, a sensor type, and a sensor pin. All of this is shared with E0, and Klipper rejects shared pins even though it is a shared heater… which has been eliminated from Klippers vocabulary.

I can get one of the motors working with extruder_stepper, however I can’t seem to figure a way to sync 1 extruder_stepper to another extruder_stepper.

If shared_heater needs to be depreciated than why not configure the hot-end independently from the extruder as it’s own object.

Is there a configuration solution to syncing my helper motors of the other 2 extruders?

See [extruder_stepper] and SYNC_EXTRUDER_MOTION

Generally, note How-To Ask for Help and the template you deleted. Further questions without a klippy.log are likely to remain unanswered.