I made a productivity device for less than 50 bucks

(Note that I did not make it, it's just the title of the post.)

Its code is open-source

Um, so, is there an actual link to the claimed code? I don't seem to see one, did I miss it? :/

The best price I could find for the "under 50 euro" hardware in the post was 190 USD, on AliExpress. I don't know if it's tarrifs or the chip shortage or what