Raspberry Pi with WS2812b strips

Hello guys, once again thank you for your valuable replies.

First of all :- Yes I am trying to make a display out of this project. So definitely I am using 18000 leds.  Cost is not my problem. I can get a strip from www.alibaba.com for $9/- with 60 leds per meter.

Here is my "theoretical" calculations:-

(Basic assumption is Pi can used to create a delay of 50 n seconds when it is over clocked at 1.2GHz)

To send one bit data to strip (either 0 or 1) time required = 1.25 u seconds

to send one byte, time required = 1.25 x 8 = 10 u seconds

to semd 24 bytes i.e. one pixel value, time required = 10 x 3 = 30 u seconds

• Assume refresh rate = 50 Hz

time for one frame = 1000/50 = 20 m seconds

reset pulse time = 80 u seconds (Assume) (>50 u seconds required)

consider x is max no. of pixels, then

(x*30)+80   = 20000

x*30          = 19920

x = 664

So max no of leds per pin on Pi is 664.

8 pins are available on Pi. So max no of leds per Pi = 664*8 = 5312

• Assume refresh rate = 25 Hz

time for one frame = 1000/25 = 40 m seconds

reset pulse time = 70 u seconds (Assume) (>50 u seconds required)

consider x is max no. of pixels, then

(x*30)+70   = 40000

x*30          = 39930

x = 1331

So max no of leds per pin on Pi is 1331.

8 pins are available on Pi. So max no of leds per Pi = 1331*8 = 10648.

This is my theory. Please tell me if it would work!

Hello guys, once again thank you for your valuable replies.

First of all :- Yes I am trying to make a display out of this project. So definitely I am using 18000 leds.  Cost is not my problem. I can get a strip from www.alibaba.com for $9/- with 60 leds per meter.

Here is my "theoretical" calculations:-

(Basic assumption is Pi can used to create a delay of 50 n seconds when it is over clocked at 1.2GHz)

To send one bit data to strip (either 0 or 1) time required = 1.25 u seconds

to send one byte, time required = 1.25 x 8 = 10 u seconds

to semd 24 bytes i.e. one pixel value, time required = 10 x 3 = 30 u seconds

• Assume refresh rate = 50 Hz

time for one frame = 1000/50 = 20 m seconds

reset pulse time = 80 u seconds (Assume) (>50 u seconds required)

consider x is max no. of pixels, then

(x*30)+80   = 20000

x*30          = 19920

x = 664

So max no of leds per pin on Pi is 664.

8 pins are available on Pi. So max no of leds per Pi = 664*8 = 5312

• Assume refresh rate = 25 Hz

time for one frame = 1000/25 = 40 m seconds

reset pulse time = 70 u seconds (Assume) (>50 u seconds required)

consider x is max no. of pixels, then

(x*30)+70   = 40000

x*30          = 39930

x = 1331

So max no of leds per pin on Pi is 1331.

8 pins are available on Pi. So max no of leds per Pi = 1331*8 = 10648.

This is my theory. Please tell me if it would work!