30 lines (24 loc) · 584 Bytes

WS2812 LED

Protocol

800k codes / sec
50us reset
30us / led
3 bits / code
8 codes / color
24 bits / color (3 bytes)
3 colors / led
24 codes / led
72 bits / led (9 bytes)

Refresh Rate

frame time = 50us + leds * 30us
300 leds = 0.00905 second frame time
frame per second = 1 / (50us + leds * 30us)
300 leds = 110 frames per second
leds = (1 / fps - 50us) / 30us
30 fps = 1109 leds
60 fps = 554 leds

Considerations

50us * 2.4m bit / sec = 120 bits
120 bits / 72 bits per led = 1.67 leds
UART
SPI