If You wanted to output analog voltages from a microcontroller, the MCP4725 is the DAC that will let you do it!
The CJMCU-MCP4725 is an I2C controlled Digital-to-Analog converter (DAC). A DAC allows you to send analog signal, such as a sine wave, from a digital source, such as the I2C interface on the Arduino microcontroller. Digital to analog converters are great for sound generation, musical instruments, and many other creative projects!
This version of the CJMCU-MCP4725 Breakout fixes a few issues with the board including the IC footprint, the I2C pinout, changes the overall board dimensions to better fit your projects, and a few more minor tweaks

Technical Details

Product Details

Package Dimensions
Width : 3 inch
Height : 0.39 inch
Length : 4.33 inch

Shipping Weight: 0.32 ounce (View shipping rates and policies)

ASIN : B01HYTR7KA