A few weeks ago I ordered some 3000mcd LEDs from ebay for the holo projectors. I thought I was getting regular round LEDs but what showed up was these.
At first I thought I’d have to go buy a round set, but then I had the idea that I could simply solder them in a 2×2 square and hot glue them to a piece of plastic for easy mounting.
I then mounted them at a 90 degree angle on the rear cap of the holo projector, so as not to face directly forward and cause hot spots.
All I had to do then was screw it into the holo projector