Klipper Ender 2 Pro

My clipper configuration for the ender 2 pro

http://ender2pro.local/

Hardware

• Ender 2 Pro (Purchased December 2021)
• Creality Silent board v4.2.3

Mods

• Raspberry Pi Case
• Mosfets on Fans
• LED Bar
• Run out Sensor
• 12v Regulators on fans
• BlTouch

(See RaspberryPi.fzz for schematic)

Tuning

• https://teachingtechyt.github.io/calibration.html
• https://github.com/AndrewEllis93/Print-Tuning-Guide

Input Shaper

Input shaper tools are installed with playbooks/input_shaper.yaml. The playbook can be called with the makefile shortcut make input_shaper

Files are copied from the host back to this repo

Recomended shaper settings are printed out with ansible

TASK [Print Calibrate Y] **********************************************************************************************************************
ok: [ender2pro.local] => {
    "msg": [
        "Fitted shaper 'zv' frequency = 103.0 Hz (vibrations = 19.0%, smoothing ~= 0.020)",
        "To avoid too much smoothing with 'zv', suggested max_accel <= 41300 mm/sec^2",
        "Fitted shaper 'mzv' frequency = 62.8 Hz (vibrations = 4.9%, smoothing ~= 0.052)",
        "To avoid too much smoothing with 'mzv', suggested max_accel <= 11600 mm/sec^2",
        "Fitted shaper 'ei' frequency = 88.4 Hz (vibrations = 6.1%, smoothing ~= 0.042)",
        "To avoid too much smoothing with 'ei', suggested max_accel <= 14600 mm/sec^2",
        "Fitted shaper '2hump_ei' frequency = 78.2 Hz (vibrations = 0.9%, smoothing ~= 0.088)",
        "To avoid too much smoothing with '2hump_ei', suggested max_accel <= 6800 mm/sec^2",
        "Fitted shaper '3hump_ei' frequency = 72.4 Hz (vibrations = 0.0%, smoothing ~= 0.156)",
        "To avoid too much smoothing with '3hump_ei', suggested max_accel <= 3800 mm/sec^2",
        "Recommended shaper is 2hump_ei @ 78.2 Hz"
    ]
}

BLTOUCH

A BLTouch is installed.

Warning: There are 2 ways to install the BLTouch on a Creality silent board. This assumes using a single 5 pin header instead of separate 2 pin and 3 pin headers. If you don't know the difference, see timestamp 7:24 in this youtube video by teaching tech

##3 Fillament runout sensor

The following part plugs directly into the Pre-srt Port on creality board 4.2.2 / 4.2.3

• Part: https://www.amazon.com/gp/product/B08QJDP36R/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

klipper runout sensor config

The following will just work on klipper, assuming you already have a 'pause' and 'resume' macro defined.

As soon as the fillament runs out, it will pause the print. To resume, click the 'resume' macro in the gui

[filament_switch_sensor RunoutSensor]
pause_on_runout: True
switch_pin: !PA4

If you wish to override the runout sensor with your own macro, you can specify it like so

[filament_switch_sensor RunoutSensor]
pause_on_runout: True
switch_pin: !PA4
runout_gcode: PAUSE
insert_gcode: RESUME

Bed Mesh

Run this command to run a bed mesh calibration, then save it for future use

BED_MESH_CALIBRATE PROFILE=PEI
SAVE_CONFIG

The mesh will then be saved to the printer.cfg. Be sure to copy it back to this repo or changes will be lost

Open the printer.cfg in fluidd/mainsail and look for lines that start with:

#*# <---------------------- SAVE_CONFIG ---------------------->
#*# DO NOT EDIT THIS BLOCK OR BELOW. The contents are auto-generated.

Setup

The following settings are for a Creality Silent board v4.2.2

make menuconfig
# SM32F103
# 28KiB bootloader
# Disable usb for communication
make
# Then copy the .bin file off the raspberry pi and put it on a fresh SD Card.
# The .bin file must be named something unique (and it can't be firmware.bin, or the previous file name)

Resources

• Pinout: https://docs.google.com/spreadsheets/d/1DYhh9fwLnvZzuNvMoBen9Dl68KN-4TWkbO94lJ4iwe4/edit

• https://www.youtube.com/watch?v=MaUU8stsZPo

• https://www.youtube.com/watch?v=ABsdnkP4iwQ

• 4.2.7 pinout https://all3dp.com/2/klipper-ender-3-v2/

• 4.2.7 pinout https://3dprinting.stackexchange.com/questions/16078/steppers-stuck-with-klipper-but-work-with-marlin

• 4.2.7 klipper config https://github.com/Klipper3d/klipper/pull/3335/files

• Install on Ender 3 V2 https://www.youtube.com/watch?v=gfZ9Lbyh8qU

• Klipper Support https://github.com/spuder/klipper/pull/1/files

Extruder Calibration

• https://3dprintbeginner.com/extruder-calibration-guide/

Flow Calibration

• https://3dprintbeginner.com/flow-rate-calibration/

OS setup

To setup the OS

1. Download FluidPI: https://github.com/fluidd-core/FluiddPI
2. Download Raspbery Pi imageer https://www.raspberrypi.com/software/
3. Press cmd+shift+x to get advanced settings.
4. Change the hostname to ender2pro (or whatever you want. It must match ansible inventory file)
5. Use ansible/make to configure

Ansible

klipper config file is located at /home/{{ user }}/klipper_config/printer.cfg This repo contains an ansible playbook that will copy the local printer.cfg to the printer and restart the klipper service if it changes.

To use

1. Modify inventory to point at your raspberry pi
2. Run the following ansible commands (Or use the make shortcuts)

Setup ssh keys

ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]

ansible-playbook --check playbook.yaml
ansible-playbook -i inventory playbook.yaml -c paramiko --ask-pass

For best results, use the default user 'pi'. If you change it, you will need to manually update all the init scripts since they are hard coded to /home/pi/*

make klipper    # run just the klipper playbook (default)
make moonraker  # run just the moonraker playbook
make webcam     # run just the webcam playbook
make all        # run all playbooks
make            # runs default (in this case klipper)

Then navigate to http://ender2pro.local/#/ and enjoy

UART vs USB

If using the UART cable instead of the USB cable, you need to run additional steps

https://github.com/Klipper3d/klipper/blob/master/docs/RPi_microcontroller.md#install-the-rc-script

1. Recompile klipper firmware to use UART not USB
2. Install the klipper_mcu init script
3. run make flash and select linux process
4. Restart klipper