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Is there alternatives to the raspberry pi?

The official docs only recommend raspberry pis, unless I missed it.

With the global shortage, they seem impossible to get. They are being scalped on eBay for $200.

Are there alternatives to the raspberry pi that are tested working fine with octoprint?

A lot of devices work fine, but be aware that you have to set up OctoPrint yourself on non Pi devices.
I do not want to scare you off with that - just telling you so you know.

You can use single board computers like the Pi, old PCs or Laptops (even a Linux based cable receiver could work in same cases :wink: ).

If I were you I would look for a used mini PC like an Intel NUC on ebay. They are listed for $50-$80, come with 4GB+ ram and most of the time with a 120GB+ ssd.

Anything from the last 10 years should be fine (if you decide to go with an x86 based system like a NUC).

Install Linux (Debian for example), then install OctoPrint with the help of this guide. Setting up OctoPrint on a Raspberry Pi running Raspberry Pi OS (Debian)

Just replace the Pi user with you own username.

If you need help with the setup let us know.

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Thank you! I'll look at the NUC.

I've been using OctoPrint with my Ubuntu 20.04 computer which I installed it using docker.
It's a bit of a hassle to install docker, but you don't have to depend on system packages and makes it easier to upgrade OctoPrint.
You can find it here: Docker Hub

I love that you described Docker as a "hassle" it made me laugh because it is sooo true.

Installing Docker in a modern OS is easy, its like one command. But learning how it works and all the commands to manage containers/images is definitely a learning curve. But it has a high payoff, highly recommend learning it!