[BUG] filament fan incorrect control in MKS robin nano v1.3

[riccalisci]

Did you test the latest bugfix-2.1.x code?

Yes, and the problem still exists.

Bug Description

When the fan set to 0% led D1 (in mobo) flashes a little bit and the fan try to move. when the fan set to 100% led flashes yet and the fan not run constantly.
video

i commented a PB1 declaration in pins->stm32f4->pins_MKS_ROBIN_NANO_V1_3_F4.h. I don't know what it's for, but probably is in conflict with PB1 declared in pins_MKS_ROBIN_NANO_common.h.

I commented the line #define LED_PIN PB1 (as in image) and fan work correctly

configuration.zip

Bug Timeline

No response

Expected behavior

verify solution

Actual behavior

No response

Steps to Reproduce

No response

Version of Marlin Firmware

2.1.x bugfix

Printer model

Flsun Q5

Electronics

MKS robin nano v1.3

Add-ons

TMC226 UART

Bed Leveling

UBL Bilinear mesh

Your Slicer

Prusa Slicer

Host Software

SD Card (headless)

Don't forget to include

• A ZIP file containing your Configuration.h and Configuration_adv.h.

Additional information & file uploads

No response

[ellensp]

yes #define LED_PIN PB1 does look to be in error.

[ellensp]

Have created a PR to fix this.

[github-actions]

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