For those that aren’t familiar:
Scintillation is the proper name for the twinkle you get nowadays with stars (And those days as well)
I am in need of some ideas on how to make 5 SMALL LEDs twinkle as realistically as possible. The number of LEDs is negotiable (see #1 below) I don’t necessarily need Arduino code on this, a technique in any language is fine.
My main issues:
- Scintillation is NOT just the brightening and dimming of a single point. It also involves an apparent shift in x/y and a bit of size shift.
a. Perhaps if I were to use two or three 0402 SMD cold whites and place them essentially touching? I could then cycle through them a bit, brightness wise and get some good results…
Related to that, if I were able to use this on a LARGER scale, I’d go with a three chip LED and that would be easy peasy.
- Stars shift in color a bit as well. Perhaps look for a few different color temps and mix as in 1a? Perhaps just tint a bit?
- Randomization: Threading would sure help here… Unfortunately, I not only can’t do that, but might need to do this with an attiny45. Not only no threading, but no storing pre-designed large patterns that might APPEAR random.
Anyone care to think about this one with me? If there was a clear QUESTION, it would be “have you seen truly believable star effects from an LED before and where?”