Digital-to-analog conversion is part and parcel of almost all industrial applications. Microchip has developed a nice chip, MCP4725, which works over I2C / TWI protocol to receive digital input and processes it to generate analog output with 12-bit precision.
This device provides an easy interface to any microcontroller having built-in I2C / TWI.
This module breaks out the pins of the MCP4725 to standard 0.1" header pins, so you can start experimenting with DAC quickly.
The board comes assembled as shown.
MCP4725 Breakout Board Schematic
Microchip MCP4725 Page with datasheet and other documentation
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