UPDATE:
This tutorial ha been updated on 2022, please check the below videos and get the latest firmware to use.
NOT MARLIN | How to Enable Auto Bed Leveling Feature on KINGROON KP3S 3D Printers
https://youtu.be/s2ZiibBKVKI
2022/02/18
【Firmware Released】 How to replace mainboard for KINGROON KP3S 3D Printers
https://youtu.be/LBa8X6U1Y_w
2022/05/15
KP3S 3D Touch Firmware(STM32F103/GD32F303) V1.0.7_2022.03.30:
https://drive.google.com/drive/folders/1eDY91nCIgY-3owwBqj1e4Szzl0qyVd9j?usp=sharing
If you get the wrong axis direction issue, click below article, step 4 will help you:
https://kingroon.com/blogs/3d-print-101/modify-mainboard-configuration-file-of-kingroon-kp3s
You can flash back to the stock firmware any time, just remember to unplug the cable on the extruder:
https://1drv.ms/u/s!AmGcVrncIH3ZhiM0p_CYANOff-UR?e=nvbJvf
3D Touch Hanger: https://drive.google.com/drive/folders/1rYdTBTf4XtJGof0uk9KzDwkJOqeNtTP6?usp=drive_link
To install 3D Touch leveling sensor on Kingroon KP3S 3D printer, we would recommend you to use it based on Marlin firmware.
Kingroon KP3S 3D Touch Mount
https://www.thingiverse.com/thing:4609134
3D Touch Wiring to the Mainboard
Plug 3D Touch wires into the corresponding ports on the mainboard of your Kingroon KP3S.
The white line is the signal pin. The black line is the ground. There are information on the board. S for signal. G for ground.
The colors of cables may varies from different bltouch manfacturers. There are 3 pins port on the mainboard: G, 5V, S. Insert the connectors to the 3 pins port accordingly.
Here is the cable information of the 3D Touch on our site:
Green line: -, GND
Red line: + 5V
Yellow line: signal line
Update 3D Touch Firmware for KP3S
Kingroon KP3S with 3D Touch leveling sensor modification firmware to DOWNLOAD.
Configure the Z-offset Value
To configure the Z-offset value of Kingroon KP3S. Open the .txt file in the firmware files you downloaded from the above link.
1. Change the mode as” cfg_leveling_mode” 1
2. Setup endstop into Z Min_Probe_endstop_inverting 0 # Z probe
3. Set the leveling probe on Zmax: Z_min_probe_pin_mode 2
4. Setup the X, Y, Z axis offset.
If the distance between the extruder and the platform is too close when printing, then reduce the Z-axis offset value, otherwise, increase it. Normally, we don't need to change the value of X probe offset from exand Y probe offset from extruder.
5. Set 3 (grid points) as bed leveling method
6. Set leveling range as follows
7. Run 3D Touch on Kingroon KP3S: 3D TOUCH 1
Adjust the Z-offset Value
Now everything is ready to start adjusting the Z-offset value of your Kingroon KP3S. You need to adjust the Z-offset on the above .txt file as well.
Adjust the Z probe offset from extruder value down a little at a time to avoid your nozzle crashes into the heatbed and leads to any damages.
In this firmware version, you could only adjust Z-offset value through the .txt file in the firmware. Do not support Z-offset adjusting on control screen.
I install the geetech 3d touch v.3.2 and don’t work motherboard 303, the red ligth stay on and dont do nothing. when i press autoleveling move ma don’t work……
On my mainboard, Z- is not available. Only Z+, so I wired the black and white cable there. I am using the 3DTouch V3.2
My leveling does not work. when switching on, the 3DT blinks red twice and when click autolevel, it moves to point 1, then goes up ad sits there, about 1.5" above the bed. I would assume because of the Z+???? What can I change to correct this in the config file? Thank you in advance!
I’m trying using 3D Touch 3.2 by Geeetech – no success. I tried test probe with:
M280 P0 S120 … continualy test probe down/up … WORKS
M280 P0 S160 … reset (stop continualy test) … WORKS
M280 P0 S10 … probe down … NOT WORKS
M280 P0 S90 … probe up … NOT WORKS
Your firmware for GD32F303 (board v1.3)does not support 3D Touch ? Btw – where can I get stock firmware for this GD32F303 board ? There is missing bed leveling submenu now.
When is pluged Z-stop to Z- terminal, then is not possible controll Z-axis via PC and G-CODE.
On your photos is Black/White pluged once to Z- , once to Z+. What is relevant ?
Flashed fw for BLTouch to KP3S board with GD32F303. When is printer turned on, 3D touch shines red and probe twice goes out and back.
But when I am using ‘Autoleveling’ button , 3D touch only shines red but no movement.