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Mainsail

Mainsail is a responsive web interface for the Klipper 3D printer firmware. It communicates with the Klipper-API from Arksine.

Requirement

Mainsail requires a working Klipper instance. Please head over to the official Klipper installation documentation.

Installation of Mainsail

The installation is split into several sections:

Change branch for Klipper-API

The Klipper-API isn't merged in Klipper at the moment, so you have to change the Repository to Arksine's Fork with the Klipper-API.

cd ~/klipper
git remote add arksine https://github.com/Arksine/klipper.git
git fetch arksine
git checkout arksine/work-web_server-20200131

and install the python package "tornado"

~/klippy-env/bin/pip install tornado

Configure Klipper-API

Edit your printer.cfg with nano ~/printer.cfg and add the following lines:

[virtual_sdcard]
path: /home/pi/sdcard

[remote_api]
trusted_clients:
 192.168.0.0/24
 127.0.0.0/24

Edit the first line of trusted_clients (192.168.0.0/24) to your network. The second line (127.0.0.0/24) is for reverse proxy later. If you need other options in your API you can find all options with descriptions on Arksine's Fork.

Finally, we create the virtual_sdcard directory:

mkdir ~/sdcard

Restart klipper (sudo service klipper restart) and check your klippy.log if klipper is starting correct again.

When klipper is running, open the url http://<printer-ip>:7125/printer/info in your browser. If you see a content like this

{"result": {"hostname": "voron250", "error_detected": false, "version": "v0.8.0-479-gd586fb06", "is_ready": true, "message": "Printer is ready", "cpu": "4 core ARMv7 Processor rev 4 (v7l)"}}

your API is working!

install webserver & reverse proxy (nginx)

nginx is important to mount all components on port 80 and host the static files from Mainsail.

If you have installed lighttpd & haproxy before you have to stop & disable it:

sudo service haproxy stop
sudo service lighttpd stop
sudo apt remove haproxy lighttpd

After disable all other webserver you can install nginx now:

sudo apt install nginx

now we create the config file with

sudo nano /etc/nginx/sites-available/mainsail

and fill it with the following content:

map $http_upgrade $connection_upgrade {
    default upgrade;
    '' close;
}

upstream apiserver {
    #edit your api port here
    ip_hash;
    server 127.0.0.1:7125;
}

server {
    listen 80 default_server;
    listen [::]:80 default_server;

    access_log /var/log/nginx/mainsail-access.log;
    error_log /var/log/nginx/mainsail-error.log;

    #web_path from mainsail static files
    root /home/pi/mainsail;

    index index.html;
    server_name _;

    #max upload size for gcodes
    client_max_body_size 200M;

    location / {
        try_files $uri $uri/ /index.html;
    }

    location /printer {
        proxy_pass http://apiserver/printer;
        proxy_set_header Host $http_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Scheme $scheme;
    }

    location /api {
        proxy_pass http://apiserver/api;
        proxy_set_header Host $http_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Scheme $scheme;
    }

    location /access {
        proxy_pass http://apiserver/access;
        proxy_set_header Host $http_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Scheme $scheme;
    }

    location /websocket {
        proxy_pass http://apiserver/websocket;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_set_header Host $http_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_read_timeout 86400;
    }

    location /machine {
        proxy_pass http://apiserver/machine;
        proxy_set_header Host $http_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Scheme $scheme;
    }
}

Create directory for static files and active nginx config:

mkdir ~/mainsail
sudo rm /etc/nginx/sites-enabled/default
sudo ln -s /etc/nginx/sites-available/mainsail /etc/nginx/sites-enabled/
sudo service nginx restart

Now you can check again the API if it works with the reverse proxy. Open the url http://<printer-ip>/printer/info in your browser. if you see a content like this:

{"result": {"hostname": "voron250", "error_detected": false, "version": "v0.8.0-479-gd586fb06", "is_ready": true, "message": "Printer is ready", "cpu": "4 core ARMv7 Processor rev 4 (v7l)"}}

Now we can install Mainsail.

Install & Configure Mainsail

Now you can download the current mainsail static data

cd ~/mainsail
wget -q -O mainsail.zip https://github.com/meteyou/mainsail/releases/download/v0.0.9/mainsail-alpha-0.0.9.zip && unzip mainsail.zip && rm mainsail.zip

Now it should be possible to open the interface: http://<printer-ip>/.

Change the Hostname (Optional)

to use the hostname instate of the ip, you can install the avahi-daemon:

sudo apt install avahi-daemon

and you can config your hostname (if you use a raspberry pi):

sudo raspi-config

in 2 Network Options > N1 Hostname you can edit your hostname of your raspberry pi. After a reboot you can use http://<hostname>.local/ to open the webinterface.

Klipper example macros for Mainsail

These macros are important to start/pause/cancel prints.

[pause_resume]

[gcode_macro CANCEL]
default_parameter_X: 230
default_parameter_Y: 230
default_parameter_Z: 10
gcode:
    M104 S0
    M140 S0
    M141 S0
    M106 S0
    CLEAR_PAUSE
    RESET_SD

[gcode_macro CANCEL_PRINT]
gcode:
    CANCEL

[gcode_macro PAUSE]
rename_existing: BASE_PAUSE
default_parameter_X: 230
default_parameter_Y: 230
default_parameter_Z: 10
gcode:
    SAVE_GCODE_STATE NAME=PAUSE_state
    BASE_PAUSE
    G91
    G1 E-1.7 F2100
    G1 Z{Z}
    G90
    G1 X{X} Y{Y} F6000
    G91

[gcode_macro RESUME]
rename_existing: BASE_RESUME
gcode:
    G91
    G1 E1.7 F2100
    G91
    RESTORE_GCODE_STATE NAME=PAUSE_state MOVE=1
    BASE_RESUME

Update Mainsail to V0.0.9

rm -R ~/mainsail/*
cd ~/mainsail
wget -q -O kwc.zip https://github.com/meteyou/mainsail/releases/download/v0.0.9/mainsail-alpha-0.0.9.zip && unzip kwc.zip && rm kwc.zip

Update Mainsail to V0.0.9 in case you come from KWC

rm -R ~/kwc
mkdir ~/mainsail
cd ~/mainsail
wget -q -O kwc.zip https://github.com/meteyou/mainsail/releases/download/v0.0.9/mainsail-alpha-0.0.9.zip && unzip kwc.zip && rm kwc.zip

and update your macros & nginx config.