Dear Element14 community,
Recently I have bought this RGB LED strip. Once it arrived I have looked at the 2 datasheets of the components which it contains.
1) WS2811datasheet which converts a serial input signal to 3 parallel output signals (red, green, blue).
2) WS2812B datasheet which describes an individual LED.
The first thing that is remarkable is that both datasheets have different timing characteristics. For example to send a 0H in the WS2811 this requires 0.5 us HIGH voltage, but the WS2812B requires 0.4 us HIGH voltage to send a 0H. How are WS2811 and the WS2812B be able to communicate with eachother?
My other question is, how is the whole led strip soldered? As we can see on the website where I bought the strip, there are 3 female pins comming out of the strip. 1 is VDD and the other is VSS. The last that is left is data in. If I send data through my microcontroller to this data pin, I send data to the WS2811. Am I right?
The WS2811 produces 3 parallel outputs (red, green, blue), but the WS2812B LED contains only 1 data in? Why is there a need for individual colors if the LED can only take 1 data in?
I hope some experienced engineers can help me solving the question marks I have around this strip.
Kind regards,
Xhendos.
