IR Reader reads code funny in two different projects [PLEASE HELP]

thnks
a more powerfull arduino is fine
but i guess even with a more powerfull arduino fastled will still takeover serial ...right ?
so i couldnt use 2 arduinos talking in serial

and i couldnt use on same arduino also...right?

from what i understood you use
aTiny ti get the IR codes
and transmit it to the Arduino Nano (lets say nano)
that runs fastled.
through a protocol you write ?

if that is so then what is diferenxe if i just use aTiny and arduino ? or 2 arduinos ?

also
of u dont use the Serial
what other protocol do u use to pass the data between the board ?