Does what it says, make sure you know what you are getting..
For VIC20digitizer
A great little board, was pretty obvious to me (electronic engineer) how to install, to the extent that I didn't look at any documentation until it 'did'nt work properly'
(it shows monochrome with vertical lines)
It does need the additional RGB to HDMI adaptor, available from the same vendor, which also needs an additonal Pi-Zero board and SD card, and mini HDMI to HDMI. It's entirely my error, and would have bought these together had I read it all fully!!
Once put together, with the RGB to HDMI board, and some pretty trivial fiddling with the settings (menu that works in much the same way as a lot of desk top monitor .. two for 'up and down' and one for enter... worked it out pretty quickly...
Fantastic, rock solid , pin sharp display on my 40 odd year old vic20
Note .. need to do something for audio, lash something up with the din connector and headphones or PC-type speaker//whatever..
one niggle, and I can see why, doesn't seem to co-operate with my 'Penultimate' cartridge, probably a bus contention as the digitizers sits right on data and address bus on the VIC chip . Will investigate and see-- may yet be a user error!