I'm building one of these infinity mirror cubes:
I have some questions regarding the wiring.
This is what I came up with:
Green is data, black is ground and red is 5 V power. Every strip has 18 (not 25 like in the picture) LEDs and will cover one edge of the cube. There are 216 LEDs in total.
The SP105E is an LED controller, I might switch it with an Arduino later. The power supply is 5 V, 20 A (15 A should suffice, but 20 A is much easier to find).
Are there any mistakes?
From what I read, the wires should be 14AWG or even 12AWG for 5 V, 20 A, but can it be smaller since it's pulling alot less most of the time and is split over 4 strips? How thick should the data wire be? It's going all the way around, but I'm not sure how much current is going through it.
Would an off switch between the wall and power supply work or would something break when I turn it off that way often? What about turning the LEDs off over the controller and then switching the power off?
I'm a bit worried about heat inside the cube, it has 216 LEDs inside a 30 cm cube with infrared reflecting mirrors on all sides (there are some airholes at the top). Does anyone know how hot it might get inside? I'm mostly worried about the glue that holds the mirrors on the frame.
Thank you and sorry if I worded something wrong, English isn't my first language. If you need any more information, please ask.