I would like to drive a 240x180 led strip panel with SPI. I have zero experience with SPI and LEDs.

I have chosen a WS2813 IC (four wires) for the LED. The seller has a spi controller, and it drives a max of 2048 LEDs.

 

Does anyone have any experience driving as much as 2048 LEDs in SPI?

Please, share your experience and/or projects with LED and SPI in this post.

 

The question is how many LEDs i can drive with SPI and how to calculate it.

 

I came across  to MickMake formula for WS2812 led strip:

 

(spi_freq / 24) / FPS = MAX_leds 

 

The idea was to build a led panel and stream video, keeping the aspect ratio 4:3. I could save some money and change it to 16:9.

That would be 240 x 135 , but still a lot of money..

24 FPS is the ideal, but 23 FPS i think is enough.

 

FPS = 23 then MAX leds would be  ~ 1440 leds if a 60 leds per m. I could drive 6 rows of 4 m with a single board.

I was thinking to use NetSync to sync the rows, so 30 boards would do the job for 240 x 180 (4:3).

 

Mike also talks about issues if using multiple power supplies, but i have seen a DIY led panel almost as big as this with multiple power supplies and it works.

The final thought... how to wire the things...