DDS single-channel three-signal generator based on AD9833

• This project is a single-channel digital signal generator designed based on ADI's AD9833 digital signal direct synthesis IC, which supports sine, square, and triangle waves.

    And you can use two potentiometers to add DC offset or adjust the amplitude respectively.

• This project was inspired by Cezar Chrilla's How to Build Your Own Function Generator Using Analog Devices' AD9833

• This is the link to this article in myDigits

In order to allow more people to make this project, I used atmega328p-au, which is the MCU used in arduino and Cezar projects. The program in this project is designed by me. The user interface is similar to Cezar's version (because on an LCD1602, this layout is the most intuitive and convenient). The purpose of the program is to be easy to use and intuitive. The user interaction interface is LCD1602 and A rotary encoder should be sufficient for this project.

Because it is being produced and the program is being debugged, here are a few pictures of the process being produced.

***The program part can be found here https://github.com/lawrenlink/dds9833-avrproj The master branch is still undergoing functional updates.