The default I2C address is 0x18.

Power Pins

• 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 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 can use 3-5V logic, and there's a 10K pullup on this pin.
• STEMMA QT - These connectors allow you to connect to to dev boards with STEMMA QT (Qwiic) connectors or to other things with various associated accessories.

1-Wire Data Line

• 1WIRE - the signal connection for the 1-wire data line

1-Wire Terminal Block

At the top edge of the board is a 1x3 terminal block. This block lets you connect a 1-wire sensor to the breakout board.

• V+ - the power connection for the 1-wire sensor. It shares the same voltage level as VIN.
• 1W - the signal connection for the 1-wire line
• GND - the ground connection for the 1-wire sensor

Sleep Mode Pin

• SLPZ - this is the sleep mode pin. This pin can be set low to put the DS2484 into power-saving sleep mode.

1-Wire Power Jumper

• V+ - On the front of the board, below the terminal block, is the 1-Wire power pin jumper. It is outlined in white on the board silk. Cut this jumper if you want a different voltage on the 1-Wire power pin. Then, you can inject the voltage at the terminal block.

Power LED and Jumper

• Power LED - in the top left corner on the front of the board is the power LED, labeled ON. It is the green LED.
• LED jumper - on the back of the board is a jumper for the power LED. It is labeled LED on the board silk. If you want to disable the power LED, cut the trace on this jumper.