Adapter of RGBI digital signals of zx spectrum computer to VGA and HDMI signals based on RP2040 microcontroller (Raspberry Pi Pico board), for connection to modern TVs and monitors.
Tested on computers zx spectrum 128k and some clones. Classic zx spectrum 48k do not have RGBI outputs from ULA chip, so this adapter is not supported.
example of how to use https://zxbyte.ru/byte_connection_to_svga_monitors.htm#pico
more details https://t.me/rgb2vga_hdmi