### Author:  [@yvautrin](https://klipper.discourse.group/u/yvautrin)
#### Post date: [August 30, 2022, 9:38am UTC](https://klipper.discourse.group/t/thermistor-issue-i-guess/3998/1 "2022-08-30T09:38:15Z")
still working on my dual extruder setup…
2 new problems when starting the print…
I got a very quick error message on top of the screen : //T0 Command unknown
Then, bed warms up nicely, then both hotend start to warm up, with the following targets: E0/200, E1/170, E1 is flying to the roof, past the target, and when recahing its max\_temp (240), causes Klipper to shutdown…
Both hotends fans are running, temperature sensor as well (as i can see the temp on Klipper screen raising)…
Any hints?
[klippy.log](https://klipper.discourse.group/uploads/short-url/fRnIutDK9KBrjfCvAuAldzoPnsX.log) (4.4 MB)
---
### Author:  [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)
#### Post date: [August 30, 2022, 9:46am UTC](https://klipper.discourse.group/t/thermistor-issue-i-guess/3998/2 "2022-08-30T09:46:03Z")
You are missing the T0/T1 macros:
>
---
### Author:  [@yvautrin](https://klipper.discourse.group/u/yvautrin)
#### Post date: [August 30, 2022, 9:50am UTC](https://klipper.discourse.group/t/thermistor-issue-i-guess/3998/3 "2022-08-30T09:50:35Z")
So, I need to integrate this bit:
```auto
[gcode_macro T0]
gcode:
SET_SERVO SERVO=extruder_servo angle=100 # Lift secondary extruder
SET_GCODE_OFFSET Z=0 MOVE=1 # Adjust z-height
SET_GCODE_OFFSET X=0 # Clear X offset
ACTIVATE_EXTRUDER EXTRUDER=extruder
```
and this:
```auto
[gcode_macro T1]
gcode:
SET_GCODE_OFFSET Z=0.100 MOVE=1 # Adjust z-height
SET_SERVO SERVO=extruder_servo angle=100 # Position second extruder
SET_GCODE_OFFSET X=5 # Account for different X offset
ACTIVATE_EXTRUDER EXTRUDER=extruder1
```
in my printer.cfg ?
As I have 2 separated extruder, no servo, my guess is that 🙂
```auto
[gcode_macro T1]
gcode:
ACTIVATE_EXTRUDER EXTRUDER=extruder1
```
and
```auto
[gcode_macro T0]
gcode:
ACTIVATE_EXTRUDER EXTRUDER=extruder
```
This should be enough?
---
### Author:  [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)
#### Post date: [August 30, 2022, 10:35am UTC](https://klipper.discourse.group/t/thermistor-issue-i-guess/3998/4 "2022-08-30T10:35:48Z")
It should be the first two without the servo stuff
You have an offset between the nozzles, that have to appear there too
---
### Author:  [@yvautrin](https://klipper.discourse.group/u/yvautrin)
#### Post date: [August 30, 2022, 10:55am UTC](https://klipper.discourse.group/t/thermistor-issue-i-guess/3998/5 "2022-08-30T10:55:30Z")
```auto
[gcode_macro T0]
gcode:
SET_GCODE_OFFSET X=0 # Clear X offset
ACTIVATE_EXTRUDER EXTRUDER=extruder
[gcode_macro T1]
gcode:
SET_GCODE_OFFSET X=26 # Account for different X offset
ACTIVATE_EXTRUDER EXTRUDER=extruder1
```
As there is no Z offsetbetween the 2 nozzles, it should be it?
But then, In Cura, I have the x\_offset setup as well to 26mm between the 2 nozzles…Won’t it cause problems…?
---
### Author:  [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)
#### Post date: [August 30, 2022, 11:01am UTC](https://klipper.discourse.group/t/thermistor-issue-i-guess/3998/6 "2022-08-30T11:01:14Z")
Yes, no Z offset. The nozzles should be aligned perfectly to the same height.
You may look for a Y offset.
---
### Author:  [@yvautrin](https://klipper.discourse.group/u/yvautrin)
#### Post date: [August 30, 2022, 11:09am UTC](https://klipper.discourse.group/t/thermistor-issue-i-guess/3998/7 "2022-08-30T11:09:36Z")
Y and Z perfect (same extruder, same nozzle), paper test done!
Still same issue with extruder 1 temperature flying over the limits…
---
### Author:  [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)
#### Post date: [August 30, 2022, 12:35pm UTC](https://klipper.discourse.group/t/thermistor-issue-i-guess/3998/8 "2022-08-30T12:35:18Z")
You may check for hardware issues.
---
### Author:  [@yvautrin](https://klipper.discourse.group/u/yvautrin)
#### Post date: [August 30, 2022, 1:52pm UTC](https://klipper.discourse.group/t/thermistor-issue-i-guess/3998/9 "2022-08-30T13:52:13Z")
I just double checked my wiring…I interverted E0 and E1 heaters connection when i changed to dual extruder…stupid me…now all is fine…
Last question (for now!)
Now, I have the 2 macros (T0 and T1) which i have to launch before print, if i had them in Cura, will they be integrated in the gcode automatically and recognized by klipper?
After the first test print, the hotend on extruder1 is above the one of extruder0 by 0.6mm…
Can I compensate with
```auto
SET_GCODE_OFFSET Z=0.6
```
or
```auto
SET_GCODE_OFFSET Z=-0.6
```
---
### Author:  [@yvautrin](https://klipper.discourse.group/u/yvautrin)
#### Post date: [August 31, 2022, 4:44am UTC](https://klipper.discourse.group/t/thermistor-issue-i-guess/3998/10 "2022-08-31T04:44:17Z")
Ok, did some tests, and Cura takes care of the extruders activation!
For the z offset between nozzle, as it does not make sense to have a difference (one nozzle will print in the air, the other will bang in!), I just manually ajusted the two nozzles so thet are leveled!
Thanks again for all your help!
---
### Author:  [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)
#### Post date: [September 13, 2025, 5:29pm UTC](https://klipper.discourse.group/t/thermistor-issue-i-guess/3998/11 "2025-09-13T17:29:16Z")