IT/Software/Octoprint

Octoprint

An application to control (usb) 3d-printers over the network.

• send .stl over the network (no sd cards needed)
• setup and control the print
• monitor the progress of ongoing prints (optionally, webcams can be added to see the visual state)

Multi 3D printer support

• Octoprint only supports one printer per instance
• in order to support multiple printers, we can deploy multiple docker containers
• the different printers can then be assigned to their respective instance
• this example sets up 2 instances for 2 priners, modify it to your needs

Requirements

Hardware

• Debian/Ubuntu based host (RPi, Laptop, ...)
• one USB port per 3d printer
• Recommended: network connectivity to host (if not, only control over localhost is possible)
• Optionally: one webcam per 3d-printer (needs additional USB ports)

Software

• Recommended: ssh enabled on host (required for ansible deployment >> sudo apt install openssh-server -y)
• Docker installed https://docs.docker.com/engine/install/ubuntu/ / (TODO*: ansible playbook)
• Recommended: Portainer installed https://docs.portainer.io/start/install-ce/server/docker/linux / (TODO*: ansible playbook)

Deploy Octoprint with 2 printers

• Reference: https://github.com/OctoPrint/octoprint-docker

General

• modify the docker-compose.yml according to your printer and webcam devices (e.g. /dev/ttyACM0 /dev/video0)
• make sure each instance uses it's own port (default port 81 and 82)

Manual deployment with Portainer

• deploy the compose file on the hosts Portainer as a stack
• access and configure at http://<HOST_IP>:81/ http://<HOST_IP>:82

Plain Docker Compose without Portainer

• copy the compose file to /srv/docker/octoprint/docker-compose.yml on the host
• cd /srv/docker/octoprint
• start the containers with sudo docker compose up -d
• check if containers are running sudo docker ps
• check for any errors with sudo docker compose logs -f
• access and configure at http://<HOST_IP>:81/ http://<HOST_IP>:82

*TODO: Push the snippets to GitHub or so and link here, looks !nice...

version: '3.9'

services:

 octoprint-1:
   image: octoprint/octoprint
   restart: unless-stopped
   ports:
     - 81:80
   # devices:
   # use `python -m serial.tools.miniterm` to see what the name is of the printer, this requires pyserial
   #  - /dev/ttyACM0:/dev/ttyACM0
   #  - /dev/video0:/dev/video0
   volumes:
    - octoprint-1:/octoprint
   # uncomment the lines below to ensure camera streaming is enabled when
   # you add a video device
   #environment:
   #  - ENABLE_MJPG_STREAMER=true

 octoprint-2:
   image: octoprint/octoprint
   restart: unless-stopped
   ports:
     - 82:80
   # devices:
   # use `python -m serial.tools.miniterm` to see what the name is of the printer, this requires pyserial
   #  - /dev/ttyACM1:/dev/ttyACM0
   #  - /dev/video1:/dev/video0
   volumes:
    - octoprint-2:/octoprint
   # uncomment the lines below to ensure camera streaming is enabled when
   # you add a video device
   #environment:
   #  - ENABLE_MJPG_STREAMER=true

volumes:

 octoprint-1:
 octoprint-2: