I've decided to buy arduino and hack my AC because pilot is pretty inconvenient to use. I'm using IRremote library and TSAL6400 IR diode powered from 5V arduino pin controlled with logical transistor. I had no problem reading the codes from my remote but when i try to send them with led I can't get it to work. I see led flashing with my camera, but AC is not responding. Tried all sort of distances and angles but nothing works. Any ideas what may be wrong?