I wanted a ring light I could use for video with my iPhone and camera. I didn’t understand the ballast thing for a while, but then, I realized that each ballast tells you what model number of light tube to use. So, I found the light tubes I wanted, then searched for the ballast that would work.
I saw tutorials for making LED ring lights and they seemed really complicated. This one isn’t complicated, but it wasn’t as simple as it could have been – e.g. if I used a shiny tray instead of an oil drip pan and foil tape, that would have removed a step. I probably could have gotten some proper hardware for mounting to the tripod (or light stand) also, then I wouldn’t have needed to make that wooden thing.
I think the only thing you can’t see in the photos below is that I put washers around two wood screws and screwed through the pan into the wooden cross to connect them.
I use a camera behind the ring and an iPhone in front of the ring.
Plus this stuff
dollar store aluminum foil tape
dollar store oil pan
old duct tape roll
1/4″-20 insert nut (for mounting it to a tripod) (home depot)
matte black paint
screws (dollar store)
washers (dollar store)