Marlin v2.1.2.x bugfix to 20240908

Marlin Firmware v 2.1.2.x bugfix at 20240908 for Kingroon KP3S Pro and S1

MBL

No BL-Touch,
16 points manual Mesh bed leveling (*) ,
PID autotuning from menu,
Linear advance (0.06 for PLA),
Input shaper,
portrait display,
double touch select,
scroll long filenames,
babystepping,
5 languages available,
recover on power loss
290°C nozzle (**).

ABL

BLTouch,
Bi-linear mesh creation with 16 points bed leveling (*),
Z-offset wizard
PID tuning menu,
Linear Advance (0.06 for PLA);
Input Shaper,
portrait display,
double touch select,
scroll long filenames,
babystepping,
5 languages available,
recover on power loss
290°C nozzle (**).

ABL 350 and MBL 350

Like above but they use 61 type thermistor HT-NTC100K B3950 and 350°C limit for high temp technical filaments.
MPC Model Predictive Control only for 350°C version.

In the zip file choose right version for your printer and copy the Robin_nano.bin into the SD.

Configurations files available.

(*) Remember to add command M420 S1 into the slicer for your printer's start Gcode to load saved mesh both for manual and automated.
(**) The stock glass thermistor is not reliable for temperatures over 265°C. Change with a metal capsule thermistor HT-NTC100K B3950 and an heatblock that support 3 mm diameter thermistor.

Z-probe offset configured for this shroud: https://www.thingiverse.com/thing:6082540
Remember to correct offset of the Z-probe if you use stock or different fan shroud.

Before bed traming and leveling pre-heat manually to PLA temperatures.

How to flash. Download and uncompress ZIP archive. Choose the directory of your printer setup, copu Robin_nano.bin file into SD card, insert and switch on printer to update.

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