119 lines
4.4 KiB
Markdown
119 lines
4.4 KiB
Markdown
These instructions assume the software will run on a Raspberry Pi
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computer in conjunction with OctoPrint. It is recommended that a
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Raspberry Pi 2 or Raspberry Pi 3 computer be used as the host
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machine.
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It should be possible to run the Klipper host software on any computer
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running a recent Linux distribution, but doing so will require Linux
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admin knowledge to translate these installation instructions to the
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particulars of that machine.
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Klipper currently supports Atmel ATmega based micro-controllers and
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Arduino Due (Atmel SAM3x8e ARM micro-controller) printers.
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Prepping an OS image
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====================
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Start by installing [OctoPi](https://github.com/guysoft/OctoPi) on the
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Raspberry Pi computer. Use OctoPi v0.13.0 or later - see the
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[octopi releases](https://github.com/guysoft/OctoPi/releases) for
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release information. One should verify that OctoPi boots and that the
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OctoPrint web server works. After connecting to the OctoPrint web
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page, follow the prompt to upgrade OctoPrint to v1.3.2 or later.
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After installing OctoPi and upgrading OctoPrint, ssh into the target
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machine (ssh pi@octopi -- password is "raspberry") and run the
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following commands:
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```
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git clone https://github.com/KevinOConnor/klipper
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./klipper/scripts/install-octopi.sh
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```
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The above will download Klipper, install some system dependencies,
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setup Klipper to run at system startup, and start the Klipper host
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software. It will require an internet connection and it may take a few
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minutes to complete.
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Building and flashing the micro-controller
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==========================================
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To compile the micro-controller code, start by configuring it:
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```
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cd ~/klipper/
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make menuconfig
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```
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Select the appropriate micro-controller and serial baud rate. Once
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configured, run:
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```
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make
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```
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Finally, for common micro-controllers, the code can be flashed with:
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```
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make flash FLASH_DEVICE=/dev/ttyACM0
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```
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Setting up the printer configuration
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====================================
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The Klipper configuration is stored in a text file on the Raspberry
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Pi. Take a look at the example config files in the
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[config directory](../config/). The
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[example.cfg](../config/example.cfg) file contains documentation on
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command parameters and it can also be used as an initial config file
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template. However, for most printers, one of the other config files
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may be a more concise starting point. The next step is to copy and
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edit one of these config files - for example:
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```
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cp ~/klipper/config/example.cfg ~/printer.cfg
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nano ~/printer.cfg
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```
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Make sure to review and update each setting that is appropriate for
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the hardware.
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Configuring OctoPrint to use Klipper
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====================================
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The OctoPrint web server needs to be configured to communicate with
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the Klipper host software. Using a web browser, login to the OctoPrint
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web page, and navigate to the Settings tab. Then configure the
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following items:
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Under "Serial Connection" in "Additional serial ports" add
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"/tmp/printer". Then click "Save".
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Enter the Settings tab again and under "Serial Connection" change the
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"Serial Port" setting to "/tmp/printer". Unselect the "Not only cancel
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ongoing prints but also disconnect..." checkbox. Click "Save".
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From the main page, under the "Connection" section (at the top left of
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the page) make sure the "Serial Port" is set to "/tmp/printer" and
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click "Connect". (If "/tmp/printer" is not an available selection then
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try reloading the page.)
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Once connected, navigate to the "Terminal" tab and type "status"
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(without the quotes) into the command entry box and click "Send". If
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the Klipper config file was successfully read, and the
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micro-controller was successfully found and configured, then this
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command will report that the printer is ready. It is not unusual to
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have a configuration error during the initial setup - one may modify
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the printer config file and then issue a "restart" command in the
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OctoPrint terminal to reload the config. Continue modifying the config
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and restarting until "status" reports the printer is ready.
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Klipper reports error messages via the OctoPrint terminal tab. The
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"status" command can be used to re-report error messages. The default
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Klipper startup script also places a log in **/tmp/klippy.log** which
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provides more detailed information.
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In addition to common g-code commands, Klipper supports a few extended
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commands - "status" and "restart" are examples of these commands. Use
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the "help" command to get a list of other extended commands.
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