onlynoise

In time to array an create an array that will eventually determine witch LED's are off or on ( off LED's are 0x000000 and on LED's are "ledColor") The array length is the total number of LED that you have, more specific is the total number of LED's controllers. If you have 3 LED's for each segment than you have 21 LED's for each digit, therefore you have the following situation 1-21 = leds in digit 122-42 = leds in digit 243,44 = leds represents the dots ( : )45-65 = leds in digit 366-87 = leds in digit 4 You must iterate trough all the 4 digits (line 144 in RaimisS code) and after that for each digit trough all the led in it (example for first digit at line 154 in RaimisS code) Hope that helped :D

in order to difuse the light I've used 2 sheets of paper

The initial project uses WS2811 witch has 3 LED / controller, WS2812 has one led / controller you must adjust the led digit arrays accordingly. For example digit 0 WS2811 : {0,1,1,1,1,1,1}WS2812 : {0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}P.S. Keep in mind that in my code the dots are controlled by a single LED controller if you use ws2812 you must account for 2 LED's

In English please, I can't understand where you need help.

In English, please. I don't understand where you need help.

If they are individually addressable then yes.

Yes it can display the seconds