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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:

IT/Software/Octoprint

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