Actually this is a project which I started last year and was not able to finish it then.
Using WS2811 led lights (not strips) I thought about making a Christmas tree light being able to control every single led using an Arduino. This is actually very simple. For about 100 lights, I used a 10A power source just to be sure. Also next year I might add another 50 lights to it.
The best part about it is the programming. I found a lot of programs online. Took the nicest one, combined and tweaked them, and here is the result…
Christmas is coming and everyone gets out all decorations and lightnings from the basement. It’s a wonderfull time of the year to remember every light bulb from the lightning, which was broken last year, and when there was no time to fix it, etc.
Also to remember which decorations were not so appreciated. This is the case with our two little trees which we got for the childrens room. They had to be turned on every evening and off after going to sleep. An unnecessary process which I wanted to fix.
I remembered some time ago I controlled a simple light with a little Attiny85. This had to be done again.
I used a Arduino Uno as a programmer for the Attiny. I had to remember the whole process again, so I’ll better write it here for the future.