so I'm trying to design a controller for my air conditioner. It has an IR remote so my plan is to just capture all the IR codes and go from there.

There is a unique code for every combination of settings so the remote (with lcd screen) and the main unit are always in sync.

most of the settings are straightforward, but i can't figure out if there is a pattern for the temperature. but maybe someone else might be able to. here is the codes, they are all 32-bit NEC encoded:

61° 9000061A

62° 9080061A

63° 9080063A

64° 9040061A

65° 9040063A

66° 90C0061A

67° 90C0063A

68° 9020061A

69° 90A0061A

70° 90A0063A

71° 9060061A

so its clear that only the 3 and 7th byte change. The 7th byte just alternates between 1 and 3 except for 68? and the 3rd byte seems to be a mystery

does anyone see a predictable pattern or should I just code an array for these?