By default, it is set to use the input voltage as the Vref, allowing the user to scale the voltages from 0V to 3.3V or 5V depending on the input voltage. Or, use the 2.048V Vref for ~3.3V usage, and the 4.096 Vref for ~5V usage. The breakout is populated with the required support circuitry to use it with the microcontroller of choice or a Blinka-supported computer. The SparkFun Qwiic compatible STEMMA QT JST SH connectors ease the process of connecting the MCP4728 to the project and can allow the user to easily share an I2C bus with other STEMMA QT, Qwiic, Grove or other compatible sensors. Adafruit drivers, wiring diagrams, and example code for Arduino, CircuitPython, and Python make it easy to get started so the user can get rolling with their project instead of figuring out how to wire things or get the code working.