4 DAC Shield for Arduino ...and other platforms! | Indiegogo
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Gravity: I2C 12-Bit DAC Module - DFRobot
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AD5667 16-Bit 2-Channel Digital to Analog Converter I2C Mini Module - IoT Devices & Sensors | Relay Controllers, Current Monitoring & Vibration Sensors
Using a DAC with Arduino (MCP4725) Digital to Analoue Converter - YouTube