#### Dez

##### Fueled by Christmas - Inspired by You!

Hi,

I am wanting to create a pixel matrix which will be 1200mm x 1200mm and the I will be using WS2811 bullet pixels from Ray Wu spaced at 50mm apart.

I am having some trouble working out how to calculate how many power supplies I will require. I am almost 100% confident that my calculations are incorrect. Where I have written "power" is where I plan on power injecting. Can someone please help me out here? Based on the attached drawing, below are a few questions I need answering and possibly explain how you got to this answer so I can better understand.

I am wanting to create a pixel matrix which will be 1200mm x 1200mm and the I will be using WS2811 bullet pixels from Ray Wu spaced at 50mm apart.

I am having some trouble working out how to calculate how many power supplies I will require. I am almost 100% confident that my calculations are incorrect. Where I have written "power" is where I plan on power injecting. Can someone please help me out here? Based on the attached drawing, below are a few questions I need answering and possibly explain how you got to this answer so I can better understand.

- Do I have the number of channels correct?
- How would you get Ray Wu to make up your pixels for this?
- What is the total light load and how to calculate?
- What strength power supply to use?
- Would you consider 5V a better option for this and why?