Comment by graphe

If you'd like to see this and more in software for flashlights please visit toykeeper's projects!

https://github.com/ToyKeeper/anduril

https://toykeeper.net/

I loved this feature on my flashlight and used it exclusively on candle mode. There's a lot of thought that goes into it like PWM speed or direct drive for LEDs that may or may not cause flickering and a tradeoff between battery life and the electronics available.