Order standard 1.6mm FR4 boards or thinner, with soldermask on both sides. Specs are 6/6mil, min hole 3.5mm. Make sure that the fab is able to do castellated holes.
Order components from Digikey, Mouser, Farnell, LCSC...
Assemble following schematics
Use !
Disclaimer
See paragraphs 11 and 12 of the LICENSE file.
Thanks to GadgetUK164, Rom1 and pnauts for help and testing.
Open Source Agenda is not affiliated with "NeoChips" Project. README Source: neogeodev/NeoChips