Once I had everything finished. I prepared my Gerber files in KiCad, packed them inside a rar and ordered them to JLCPCB with standard 0.8mm thickness and everything else with default settings: HASL with lead (Next batch will be done lead free, since it is safer for humans and the environment, and the price only increases about 10 cents per card), FR4 base, black PCB Color… 10 of them cost me $4 + $20 shipping ($2.40 a card), so a bit expensive for my taste.
In this repository you can find the SVG file I made in Inkscape, as well as the Gerber files I made in KiCad and sent to JLCPCB.
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