@derekfountain
3 boards publicly available on BoardRepo.
Public boards
zx-spectrum-pico-interface-one
A recreation of the ZX Spectrum Expansion System, a hardware Microdrive emulator
schematicpcbbomRP2040RP2350switchresistor
zx-spectrum-diagnostics
A hardware diagnostics board for the 48K ZX Spectrum
schematicpcbbomRP2040switchresistordiode
zx-spectrum-pico-rom
A Raspberry Pi Pico based device to emulate a ROM on a ZX Spectrum
schematicpcbbomRP2040switchresistorcapacitor