Gravity: Digital 1-to-8 I2C Multiplexer

The Gravity: Digital 1-to-8 I2C Multiplexer resolves address conflict issues when connecting multiple sensors or peripherals with identical fixed addresses to a single bus. It is an ideal expansion tool for makers, students, and developers building multi-sensor arrays on microcontroller platforms.

Solve identical I2C address conflicts

This multiplexer enables smooth communication with up to eight identical-address I2C devices on a single microcontroller port. It eliminates hardware address collisions without requiring complex software workarounds.

Expandable cascading up to 64 devices

An on-board dial switch lets you set the device address from 0x70 to 0x77, with 0x70 as the default. By cascading up to eight multiplexer modules across these addresses, you can control up to 64 same-address devices.

Broad 3.3V and 5V board compatibility

With a wide 3.3V to 5.0V operating range and a 3.3V I2C digital logic level, the board works seamlessly with 3.3V controllers such as Raspberry Pi and 5V boards such as Arduino UNO.

Solderless plug-and-play wiring

Equipped with standard PH2.0-4P Gravity connectors and 4-pin colour-coded headers, the board allows for quick, solderless setup. It supports standard 100 kHz and fast 400 kHz I2C clock rates.

Compact footprint and included accessories

The module measures a compact 32 by 32 mm to fit into tight enclosures. It comes supplied with a Gravity 4-pin UART/I2C cable and an XH2.54 5-pin header.

Video

Downloads & documentation

• Product wiki (DFRobot)