Klipper Configuration for E3D toolchanger

This configuration depends on following repositories:

1. Klipper
2. Klipper Toolchanger Code

Credit

• Thanks orignal Klipper
• Thanks orignal KTCC
• Thanks KAMP for adaptive mesh and purging
• Thanks KIAUH for gcode shell command (Arksine)

Installation

1. Setup Raspberry PI with MainsailOS

2. Install Klipper with modified repo (this only required for Duet2 WIFI), it may work with original Klipper, but not tested.

   cd ~/klipper
   git remote add alexjx https://github.com/alexjx/klipper.git
   git fetch alexjx
   git checkout -f alexjx/master

3. Install Klipper ToolChanger Extension

   cd ~
   git clone https://github.com/alexjx/Klipper_ToolChanger.git ktcc
   cd ~/ktcc
   bash install.sh

4. Install gcode_shell_command

   curl -o ~/klipper/klippy/extras/gcode_shell_command.py https://raw.githubusercontent.com/dw-0/kiauh/master/resources/gcode_shell_command.py

5. Setup Klipper with this repo

   cd ~
   git clone https://github.com/alexjx/klipper_config.git
   cd klipper_config
   bash install.sh

6. Restart klipper service

   sudo systemctl restart klipper

Configuration

1. Follow klipper document, edit ~/klipper_config/duet2/mcu.cfg, ensure mcu serial device path is correct.

2. Edit ~/klipper_config/printer_base.cfg. Update the settings for your needs.

3. Update other configurations to meet your needs.

   1. I'm using E5 for stepper x, since my stepper x is not working.
   2. I'm using PT1000 for extruder, you might have to change that.
   3. The bed is an AC powered, you might have to change that by including different bed in printer_base.cfg

4. Follow guide from KAMP to setup [exclude_object] for KAMP. Enable file processing for exclude object for adaptive probing and purging.

   • Edit moonraker.conf to include object processing

     [file_manager]
     enable_object_processing: True
     

   • Enable object lable in the slicer

5. Update scripts/generate-belt-tension-graph.sh, scripts/generate-shaper-graph-x.sh, scripts/generate-shaper-graph-y.sh to meet your paths. Prefer https://github.com/Frix-x/klippain-shaketune

6. Measure and update input shaper value for each tool.

7. Update ~/klipper_config/tool/tools.cfg. The offsets are used for initial tool alignment. Configure them to meet your needs.

Usage

Change tools

T0 ; change to tool 0
T1 ; change to tool 1
T2 ; change to tool 2
T3 ; change to tool 3

Drop tool

DROP_TOOL

Reset coupling

COUPLER_RESET

Aliangment

Note: This is an extension to the original ToolChanger. We created an alignemnt tool to use 'switch' for probing offsets of each tool. It doesn't work with the original heated bed. Since there is no place to attach the alignment rod.

Use following command to align tools. Every parameter is optional, it's given default value if not specified. However, if the default values are not correct, please edit tools/alignment.cfg to change the default values.

ALIGN_TOOLS [TOOLS=0,1,2,3]

Where

• TOOLS is a list of tools to be aligned. It's a comma separated list. Default is all tools.

Begin gcode

Begin is defined in macros/startstop.cfg. Its usage is following (with prusa slicer):

PRINT_BEGIN INITIAL_TOOL={initial_tool} BED_TEMPS={first_layer_bed_temperature[0]},{first_layer_bed_temperature[1]},{first_layer_bed_temperature[2]},{first_layer_bed_temperature[3]} TOOL_TEMPS={first_layer_temperature[0]},{first_layer_temperature[1]},{first_layer_temperature[2]},{first_layer_temperature[3]} TOOL_STANDBY_TEMPS={first_layer_temperature[0]-30},{first_layer_temperature[1]-30},{first_layer_temperature[2]-30},{first_layer_temperature[3]-30} USED_TOOLS={is_extruder_used[0]},{is_extruder_used[1]},{is_extruder_used[2]},{is_extruder_used[3]} HEAT_SOAK=20

Where

• INITIAL_TOOL is the first tool to be used in the print
• BED_TEMPS is the bed temperature for each tool, it's a comma separated list.
• TOOL_TEMPS is the tool temperature for each tool, it's a comma separated list.
• TOOL_STANDBY_TEMPS is the tool standby temperature for each tool, it's a comma separated list.
• USED_TOOLS is a list of boolean values, indicating if the tool is used in the print. Boolean value is either true or false.
• HEAT_SOAK is the time to soak the chamber for high temperature print. It's activated only if bed temperature is above 110C.

End gcode

PRINT_END

Hardware Setup

Motors

Item	Connector	Description
Motor A	Driver X	left motor from front
Motor B	Driver Y	right motor from front
Motor Z	Driver Z
Motor E0	Driver E0
Motor E1	Driver E1
Motor E2	Driver E2
Motor E3	Driver E3
Coupler	Driver E4

Heated Bed and Extruders

Item	Connector	Description
Bed	Bed Heater
Bed Sensor	Bed Sensor
Extruder 0 Heater	E0 Heater
Extruder 0 Sendor	E0 Sensor
Extruder 1 Heater	E1 Heater
Extruder 1 Senor	E1 Sensor
Extruder 2 Heater	E2 Heater
Extruder 2 Sensor	E2 Sensor
Extruder 3 Heater	E3 Heater
Extruder 3 Sensor	E3 Sensor
Hotend 0 Fan	FAN_1
Hotend 1 Fan	sx1509_duex:PIN_12	Duex FAN3
Hotend 2 Fan	sx1509_duex:PIN_6	Duex FAN5
Hotend 3 Fan	sx1509_duex:PIN_4	Duex FAN7
Part Cooling 0	FAN_2
Part Cooling 1	sx1509_duex:PIN_7	Duex FAN4
Part Cooling 2	sx1509_duex:PIN_5	Duex FAN6
Part Cooling 0	sx1509_duex:PIN_15	Duex FAN8

Endstops

Item	Connector	Description
X	X Endstop
Y	Y Endstop
Z	Z Endstop
Bed		Use Z Endstop
Alignment	E0 Endstop
Tool Mount	E1 Endstop

Notes:

1. This configuration is only work with toolchanger with physical XY endstop.