T0 also heating when T1 is heated in Marlin 2.1.1

Hi all,

We are using 'Marlin-2.1.1' with BTT Octopus Pro board and BTT TFT 5.0.

500x500 machine with Dual extruder. Both nozzles are having an offset of 66mm. PID value is given separately for both hotends.

When heating T0 (Left), only T0 is heating.

But when heating T1, both T1 (RIght) and T0 (Left) also get heated. It is physically heating.

Any help is much appreciated. Thanks in advance.

First issue it to determine if the issue is with the marlin firmware or the tft firmware

Use a control program such as Pronterface

use gcode to set the temperature eg M104 T1 S205

Check what is happening.

Edited 1 time(s). Last edit at 11/21/2022 05:40PM by Dust.

Actually, the issue is out of 10 times, 2-3 times only this issue is happening. Or sometimes randomly happening.

We checked with Pronterface. At that time the issue didn't happen.

Someone has already raised it in Marlin and it seems they have updated by Jan-22 itself.
[github.com]

May be the issue with BTT TFT?