I could really do with making the AC circuit soon. I know i will have to use software PWM because i need quite a few outputs. Im just not sure about the interrupts because ive never used them before. I need to know that before i start designing this circuit and im hoping to have it completed within a week. I also have to buy the parts and etch the PCB so a quick response would be greatly apreciated.

Ive searched google but ive not found anything about using PWM and serial together.