MCP4726 - 12 Bit I2C DAC Driver for ESP8266 Modules

This one can be used as standalone or easily controlled by the Arduino. The scope is to try to reduce as much is possible the overhead from Arduino. I am thinking to use the CBDB board to run the sensors, ADC's, DAC's, etc and act as a I2C slave for the Arduino board.

For more details :

3 - CBDB - MCP4726 Adapter 3.jpg