ZX Spectrum prototyping / expansion breakout board

[linker3000]

For anyone who fancies building their own expansion card for the ZX Spectrum, here's the design files and a write-up for a plug-in PCB for the ZX Spectrum that can be use for your own creation:

https://github.com/linker3000/ZX-Spectr ... kout-Board

My first lash-up was a ROM/EPROM board with joystick interface - details provided.

[rimmeruk]

Neat, thanks for the link. I see plenty of space on there for an Arduino

[RMartins]

I was planning to do something like this

I just wish you had a connector compatible with an Interface II cartridge layout
One can always add one.