[FR] (NOISE_THRESHOLD for SD_DETECT_PIN )

[tiwanacote]

Description

I have been fighting during one week trying to solve freezing prints over six identical machines with the following hardware:
SKR MINI V1.1
REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER with 48cm cable lenght.
A4988

It is not the same problem as #15337 or #18358 or #18117 , because when printer stops ramdomly, I can navegate over screen and stop print and it go home without problems. This issue does not kicks the processor. It stops the SPI communication.
The problem was noise over SD_DETECT_PIN. It was solved with #undef SD_DETECT_PIN into pins_BTT_Skr_MINI_V1_1.h file

Feature Workflow

1. [First Action]

Add feature like ENDSTOP_NOISE_THRESHOLD for SD_DETECT_PIN read. It could be added in Configuration_adv.h file into #ifdef SDSUPPORT.

[stef-ladefense]

I had a similar problem, have you tried to solder a 100nF capacitor in parallel on the contact of the filament detector?

[tiwanacote]

I had a similar problem, have you tried to solder a 100nF capacitor in parallel on the contact of the filament detector?

Hi, I dont have a problem on filament detector, just only in SD card detector pin... What you are mentioned is a possibility