USB controlled DDS signal generator with ATmega88

A simple signal generator which produces sine waves (or any waveform really) at audio frequencies using DDS and is controlled a USB serial connection. Only 2 chips are used in this circuit. The AVRATmega88 which produces the signal, and an FT232R for the USB interface. While a computer is required to control the varying frequency

USB controlled DDS signal generator with ATmega88 is a post from: ATMega32 AVR