Hi So Hagen and I have been going through potential candidates for the DMD chips and looking at the interfaces, which are super complex. Anything above 1080p is not usable anymore with a reasonable PCB layouting effort from our side. https://www.ti.com/dlp-chip/display-and-projection/pico-chipsets/getting-sta... Hagen is right now going through the diverse chips and we will discuss his findings next week. Until then, we should already start discussing the lens system. What we need are lenses which make a focus roughly 1 cm away from the lens, I'd say, we're going for a projector design for now, because the micro mirrors still are of a size below our target feature size, so we've got to magnify the pattern. According to the DMD data sheets, a visible UV LED should work just fine with it. https://pt.mouser.com/ProductDetail/OSRAM-Opto-Semiconductors/GD-CSSRM214-AR...

Would be cool to have Shaktor on the mailing list here :-)

Cheers -lev