# Correct Config since shared\_heater: is depreciated

**URL:** <https://klipper.discourse.group/t/correct-config-since-shared-heater-is-depreciated/24054>\
**Category:** General Discussion\
**Created:** [June 29, 2025, 8:27pm UTC](https://klipper.discourse.group/t/correct-config-since-shared-heater-is-depreciated/24054 "2025-06-29T20:27:32Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![goroph1](https://avatars.discourse-cdn.com/v4/letter/g/8edcca/32.png) [@goroph1](https://klipper.discourse.group/u/goroph1)\
**Post date:** [June 29, 2025, 8:27pm UTC](https://klipper.discourse.group/t/correct-config-since-shared-heater-is-depreciated/24054/1 "2025-06-29T20:27:32Z")

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### 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?

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**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\
**Post date:** [June 30, 2025, 10:48am UTC](https://klipper.discourse.group/t/correct-config-since-shared-heater-is-depreciated/24054/2 "2025-06-30T10:48:51Z")

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See [[extruder\_stepper]](https://www.klipper3d.org/Config_Reference.html#extruder_stepper) and [SYNC\_EXTRUDER\_MOTION](https://www.klipper3d.org/G-Codes.html#sync_extruder_motion)

Generally, note [How-To Ask for Help](https://klipper.discourse.group/t/how-to-ask-for-help/6327/1) and the template you deleted. Further questions without a klippy.log are likely to remain unanswered.

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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/klipper/original/1X/64419bf2aac6639e6ef5cef200dcd456b0a01ac3.png) [@system](https://klipper.discourse.group/u/system)\
**Post date:** [August 29, 2025, 10:49am UTC](https://klipper.discourse.group/t/correct-config-since-shared-heater-is-depreciated/24054/3 "2025-08-29T10:49:26Z")

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