Lightning mode pays no attention to FET vs regulated modes. It spans the whole brightness range… at random.

Looking at it now though, I did find a small bug. The range is level 2 to 143, but it was intended to be 2 to 150. So I just fixed that.

It won’t hit the highest level very often though, because it’s random with a low bias. This makes most of the flashes less bright, and the really bright ones only happen once in a while… like in a real storm. When I was writing that code, I had an actual lightning storm outside for comparison, so I adjusted things to look like what I saw out the window.