hi,

i'm fastbeta. i'm workin on Sinclair ZX Spectrum on RP2040 MCU (2.0$ thing). the schematics is very simple: 6 vga resistors, a couple of capacitors and ps/2 keyboard connected.

at the moment I have already made a stable release of ZX Spectrum 48K/128K/+2e with Beta Disk Interface and divIDE emulation.

Welcome to the website.
I think your project is amazing, a simple Raspberry PI Pico can do a lot.
If you want you can post some pictures of the hardware.

Here is the schematics of the RP2040 ZX Spectrum project, you can ask me for firmware or google the link to my project

Welcome fastbeta to the Forum.

The Spectrum ZX project you are doing seems incredible to me.

For whatever you need, here you have this gang of Retro friends.

Best regards and we hope to read you a lot more...