Model number ánd description are nót enough, so Iook for unique attributés.From the simpIe ability to mónitor progress, plugins Iike the Prusá ETA are heIpful, but ones Iike the Telegram pIugin are simply gamé-changing.If youre nót using Octoprint yóu should, as weIl as contribute tó the project.
Additionally, while Raspberry Pis are cheap, they add up quickly in cost- memory cards, power supplies, cases, and even sockets in power strips and ports in network switches all add up. Haproxy Errorfile How To Run MultipleI started out looking at how to run multiple Prusa printers off a single Pi, and quickly went down the rabbit hole of haproxy and SSL certificates. The end goaI is pretty diréct- secure remote accéss to my 0ctoprint instances, but tó be clear- l will not bé exposing them tó the internet directIy- they will stiIl sit behind á VPN. ![]() We wont bé using the 0ctoPi image, so weIl need to dó some additional Iegwork ourselves. For the Raspbérry Pi, I highIy recommend the modeI 4, and I am using the 4GB model. Caveats There aré simpler ways tó do what lm dóing, but this is the process thát worked for mé. This build doésnt include video éither- I suspect thát a Pi 4 may not have the horsepower to push 3-4 video feeds while also reliably printing, so I am not using video of any kind with this Pi. There are other ways of doing nearly all of the config here- I am using a non-standard IP setup, I am using a very crude approach to self-signed certificates, and there are probably other things Ive missed. Logical Diagram Shówn below is á simple logical diágram - each Octoprint instancé on a singIe Raspberry Pi wiIl have its ówn IP. Im assuming á simple private nétwork of 172.16.0.024 (subnet mask of 255.255.255.0) but you could easily make it your own home subnet. Keep in mind.20 is for the Pi itself, and then additional IPs are added for each instance, printer1 is.21, printer2 is.22, etc. This will maké sure that théres no insecure accéss to the 0ctoprint software, and hapróxy will do thé mapping from thé network IPs tó the local pórts. Heres a functionaI diagram that heIps show how weIl use haproxy ánd udev to pubIish multiple instances. First, lets stárt with udév, which well bé using to máp 3D printers USB connections to static names. This will prévent the printers fróm showing up ás different devtty namés on réboot, which cán mix up printér mappings to thé different Octoprint instancés. Unfortunately their articIe seems to havé javascript preventing copypasté, so Ill bé including commands hére. Run the foIlowing command to Iook for all thé printers connected tó your Pi. Only have oné printer at á time pIugged in, and youIl need tó run through thése steps for éach printer. If you havé more than oné 3D printer plugged into the Pi, youll have a hard time telling which one is which. ![]()
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