Kingroon KP3S

Hardware Mods

Change TMC drivers to UART Mode

• Solder TMC driver "UART" pins to (PA3, PA6, PA1)=E1-connector, (PE5)=TC-connector
• https://github.com/makerbase-mks/MKS-Robin-Nano-V1.X/blob/master/hardware/MKS%20Robin%20Nano%20V1.2_003/MKS%20Robin%20Nano%20V1.2_003%20PIN.pdf
• https://github.com/makerbase-mks/MKS-Robin-Nano-V1.X/issues/78
• https://www.3d-druck-community.de/showthread.php?tid=28594
• https://marlinfw.org/docs/hardware/tmc_drivers.html

ABL Sensor

• LJ12A3-4-Z/BX (4mm, NPN, Normally Open)
  • Sensor output directly to Z-switch input and via 1.2K resistor to ground

Software Mods

Installing Klipper

git clone https://github.com/th33xitus/kiauh.git
cd kiauh
./kiauh.sh

-> 4) Advanced
-> 3) Build only

Enable extra low-level
STMicroelectronics STM32
STM32F103
28KiB bootloader
8 MHZ crystal
USART PB11/PB10
250000 Baud
!PC6,!PD13 GPIO pins at startup

cd ~/klipper/
./scripts/update_mks_robin.py ./out/klipper.bin ./out/Robin_nano.bin
cp /out/Robin_nano.bin ~

Klipper printer.cfg

• https://3dprintbeginner.com/how-to-install-klipper-on-kingroon-kp3s/
• https://gist.github.com/nezuppo/0d06444bbf61e6d6a8953caf31e5f25d
• Extruder=7.41

Marlin Config (not used)

• https://github.com/dulfe/Kingroon-KP3S-Marlin