The default I2C address is 0x62.
Power Pins
The sensor on the breakout requires between a 2.7V and 5.5V, and can be easily used with most microcontrollers from an Arduino to a Feather or something else.
- VIN - this is the power pin. To power the board, give it the same power as the logic level of your microcontroller - e.g. for a 5V micro like Arduino, use 5V
- GND - common ground for power and logic
I2C Logic Pins
- SCL - I2C clock pin, connect to your microcontroller's I2C clock line. This pin is level shifted so you can use 3-5V logic, and there's a 10K pullup on this pin.
- SDA -I2C data pin, connect to your microcontroller's I2C data line. This pin is level shifted so you can use 3-5V logic, and there's a 10K pullup on this pin.
- STEMMA QT - These connectors allow you to connect to development boards with STEMMA QT connectors, or to other things, with various associated accessories.
Other Pins
- A0 pin / ADDR jumper - Tie A0 high, or close the jumper on the back to change the I2C address to 0x63, so you can connect two MCP4725 breakouts on the same I2C bus.
- VOUT - This is the output pin for the I2C signal.
- Optional terminal block - There is an optional 3.5mm terminal block spot on the board that breaks out VOUT and GND. You can solder a terminal block on if you like. The terminal block does not come with the board, but they are common and you can purchase one from the Adafruit shop.
