Help on sending IR Codes

ESP8266 won't work I'm afraid - it can't generate the 38kHz oscillation needed at the moment with its software PWM.

If you want to save some memory, you can do:

var off = new Float32Array([4.44984436035,4.3716430664­0 .... ]);

It'll put the data into a typed array, which will be much more memory-efficient.