Ender 3 - Klipper firmware documentation & config (#21)
Reviewed-on: #21
This commit was merged in pull request #21.
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@@ -8,10 +8,12 @@
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6. [Printer calibration](#printer-calibration)
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7. [3D printed custom parts & mods](#3d-printed-custom-parts--mods)
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8. [BBT SKR mini E3 v2 pinout](#btt-skr-mini-e3-v2-pinout)
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9. [Klipper custom firmware](#klipper-custom-firmware)
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# Octoprint backup archive
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[2025-01-01] [Ender3-backup-20250211-234353.zip](octoprint-cfg-bkp/Ender3-backup-20250211-234353.zip)
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[2025-02-11] [Ender3-backup-20250211-234353.zip](octoprint-cfg-bkp/Ender3-backup-20250211-234353.zip)
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# Slicers
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@@ -236,6 +238,9 @@ After firware update, proceed with the different calibrations in the above order
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| Filament runout sensor | n/a |  |
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| Filament Guide | [Thingiverse](https://www.thingiverse.com/thing:6930315) |  |
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| Gantry led holder | n/a |  |
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| Filament runout sensor | n/a |  |
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| Filament Guide | [Thingiverse](https://www.thingiverse.com/thing:6930315) |  |
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| Gantry led holder | n/a |  |
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| Aukey LM1 WebCam holder | [Thingiverse](https://www.thingiverse.com/thing:4683831) |  |
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| PSU exhaust fan silencer | [Printable](https://www.printables.com/model/84197-60mm-exhaust-fan-silencer-flowmaster-psu-ender3nep/comments#preview.file.GpvjC) |  |
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| Tool holder | [Local](local-stl/Tools_Holder_v3.stl) |  |
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@@ -243,4 +248,159 @@ After firware update, proceed with the different calibrations in the above order
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# BTT SKR mini E3 v2 pinout
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# Klipper custom firmware
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## Klipper configuration backup
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2025-03-05 : [klipper-config-files-20250305-150641.zip](klipper/config/klipper-config-files-20250305-150641.zip)
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- Initial config save
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## Printer firmware build and update
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1. Access klipper host using ssh
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```
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ssh ender3k
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```
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2. Stop Klipper service
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```
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sudo service klipper stop
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```
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3. Browse to Klipper directory:
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```
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cd ~/klipper
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```
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4. Pull the last version of the Klipper firmware from Github:
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```
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git pull
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```
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5. Clean up working directory before building firmware
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```
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make clean
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```
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6. Check the firmware build configuration
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```
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make menuconfig
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```
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7. Build the firmaware:
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```
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make
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```
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8. Transfer the built firmware on an micro SD card
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The built firmware `klipper.bin` is in the `~/klipper/out/` directory
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Use a SCP client to retreive it, and rename it **`firmware.bin`**.
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9. Flash the new firmware to the printer's SKR mini E3 v2 board
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1. Turn off the printer power.
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2. Introduce the SD card into the SKR board reader
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3. Turn back on the printer power.
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11. Restart Klipper service
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```
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sudo service klipper start
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```
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12. Check Klipper service is properly restarted
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```
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sudo service klipper status
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```
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## ADXL345 accelorometer
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Model used: [Aliexpress](https://www.aliexpress.com/item/1005006515088013.html) \
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### Software prereqiusites
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Note that resonance measurements and shaper auto-calibration require additional software dependencies not installed by default. First, run on your Raspberry Pi the following commands:
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```
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sudo apt update
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sudo apt install python3-numpy python3-matplotlib libatlas-base-dev libopenblas-base
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```
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Details on Klipper [documentation](https://www.klipper3d.org/Measuring_Resonances.html#software-installation)
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### Firmware configuration and build
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1. Configure the firmaware:
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```
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cd ~/klipper
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make clean
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make menuconfig
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```
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2. Build the firmware:
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```
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make
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```
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### Firmware flash
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1. Set the ADXL345 board in DFU mode by plugin it to the USB cable while maintaining the RST switch down.
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2. Check that the board is actually in DFU mode
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```
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lsusb
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```
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4. Note the device `ID` (in our example: `2e8a:0003`)
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5. Flash the firmware
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```
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make flash FLASH_DEVICE=2e8a:0003
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```
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Once flashed, the board will automatically reboot and goes back in operation mode.
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# Auto-reconnect printer after power-on
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[Source](https://arnav.jain.se/2020/auto-restart-klipper-when-ender3-connected-to-pi/) by Arnav Jain. \
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[Wallabag backup](https://wallabag.igox.org/view/211)
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---
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Start off by accessing klipper host using ssh.
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```
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ssh ender3k
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````
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Then create the `98-klipper.rules` file in the `/etc/udev/rules.d/` folder:
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```
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sudo touch /etc/udev/rules.d/98-klipper.rules
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```
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Retreive `idVendor` and `idProduct` for the Klipper MCU:
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1. Retrieve Klipper MCU ID
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```
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lsusb
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```
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2. Retrieve `idVendor` and `idProduct` using the Klipper MCU ID
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```
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lsusb -v -d 1d50:614e | grep id
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```
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Then add the following text into the `98-klipper.rules` file just created:
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1. Edit the `98-klipper.rules` file
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```
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sudo nano /etc/udev/rules.d/98-klipper.rules
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```
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2. Add text (remove the `0x` at the begining of the IDs)
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```
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## rule to restart klipper when the printer is connected via usb
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SUBSYSTEM=="usb", ATTRS{idVendor}=="1d50", ATTRS{idProduct}=="614e", ACTION=="add", RUN+="/usr/bin/sudo -u pi /bin/sh -c '/bin/echo RESTART > /home/pi/printer_data/comms/klippy.serial'"
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```
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Finally, re-load the udev rules:
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```
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sudo udevadm control --reload-rules
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```
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