While I’m not affiliated with any of these sites, I do feel its worth while giving them a nod as they have been there to make these projects possible.
- mechboards.co.uk (UK Store, keyboard parts, premade and DIY kits as well as custom services for bespoke builds)
- khor.store (EU store, keyboard parts, DIY kits, custom cables and tools)
- 42. Keebs (EU store, home of the Frood RP2040 microcontroller, also provides kits and parts)
- PCBWay (PCB and PCBA assembly, offers sekura pink and matt black soldermask)
- JLCPCB (PCB and PCBA assembly, slightly cheaper, limited soldermask colors)