[quwert95]

Very related to this, I've been trying to relocate a video about "making a sun in a box" where the creator does the following: - goes over power and lumens, basic wiring for a bare LED. - details how the color of light matters. - instructs how to measure the focal length of a fresnel lens for parallel light rays. - how to make an appropriately sized box that can be stacked in both directions to crate a "window" effect.

I've spent tens of hours trying to relocate this particular video; I thought it was a "DIY Perks" video but either he deleted it or it was someone very similar. It's so similar to DIY Perks' projector project and satellite dish sun project that it's uncanny, but it's neither of those videos.

If anyone knows this video and has a link I would be appreciative.

[UnpossibleJim]

This isn't quite what you're looking for, but this has some of what you're looking for, which is how to get the "parallel light effect" that the sun has, so it doesn't look like a bulb, and diffuses properly:

https://youtu.be/6bqBsHSwPgw

Hope this helps a little.

[quwert95]

It's not the video, but it certainly has some of what I am looking for. Thank you; it's appreciated.