This software is intended to be run on any machine on the same LAN as a PrusaLink enabled printer. The use case is a simple data consolidator for an infoscreen for a 3D printer. The infoscreen (front-end) displays a webcam feed and some data on the current print job.
It contains a flask webserver, an opencv webcam frame capturer, a prusalink data fetcher and a front-end for displaying the data from the different sources. On top of the camera implementation, the server script also grabs data from a prusa mk4 printer on the same local network to display the current status of the printer as well as some additional information about the print job.
You need flask for the server to work
You need opencv2 for the camera to work
pip install flask opencv-python
Note
In server.py you need to replace the password YOURSECRETHERE to the password generated on your printer.
Also note that the IPs of the server computer (where you run this script) and the IP of your printer probably differs from the ones in the code here.
The service only runs on python3
python3 server.py
After starting the server you can access the front end on: http://localhost:5000
The latest image is saved in /images/last.png
The template file for the front-end is inside templates/index.html
The flask server hosts the following enpoints:
/ - The root endpoint hosts the front-end for the print monitor
/api/data/- Captures data from the prusalink (the printer)
/images/last - Captures an image and stores it on disk
The front end shows the latest image from the webcam, and the following info on the print Status: Printing/Finished Job: Name of job Progress: % of print Remaining: minutes remaining Nozzle temp: in C Bed temp: in C Z-height: in mm
The front-end refreshes every 10 seconds, fetching both a new image and info about the job.