RGBtoHDMI Mono & LumaCode
This is one variant of the RGBtoHDMI device that, in combination with a Raspberry Pi Zero, allows mono or luma-encoded video signals from vintage computers to be converted to an HDMI signal for use with modern monitors and TVs.
This device was designed specifically for use with either true monochrome video sources or with other devices that generate a custom video signal that can be decoded to a color display. One such devices would be a Commodore C64 equipped with the VICIIdizer add-on.
This board combines a basic RGBtoHDMI board with the features of the analog add-on that are relevant for monochrome input. So it is substantially cheaper than the combination of the existing two. Also a detachable cable is already provided.
To get a working RGBtoHDMI upscaler, you need a Raspberry Pi Zero (any variant) with necessary accessories: Micro SDcard, Mini HDMI cable, USB power supply and a way to copy files to the SDcard. You can also get/make the optional device case.
The latest stable release of the software can be obtained from the releases page . Copy the content of the .zip archive directly into the root of the (FAT32 formatted) SDcard. No special boot image is needed. For newest features (like newly supported machines) have a look at the beta release.