At the heart of the device is a AD9833 waveform generator; with the Arduino, rotary encoder, and 16×2 LCD providing an interface to control it over SPI.

We think it’s hilarious. The meat of the project is the Arduino-based waveform generator, though. In the second video below, [joekutz] walks through the firmware in detail.

Anyone searching for a function generator may be interested in a new DIY Arduino project which details how you can make your very own. “A function generator is a very useful tool, especially ...