Cool-Emerald: DIY Programmable Function Generator Using Arduino Uno
Arduino Powered Portable Function Generator | Hackaday
displaying the sinusoidal signal from waverofm generator in the oscilloscope - Project Guidance - Arduino Forum
DDS sine signal generator for AM modulation from 1 Hz to 40 MHz with an AD9850 or AD9851, an ATmega328, and an Arduino firmware | Electronics and Mechanics for Hobbyists