The OSEPP I²C Expansion Shield is an Arduino-Compatible daughter (extension) card. It provides easy interconnection with other I²C devices, such as the OSEPP Sensor Modules family. As well, it integrates an I²C switch that provides 4 additional isolated I²C buses to enable the use without collisions of multiple I²C devices with same I²C addresses. The main I²C bus and each of the 4 additional I²C bus are brought out to a robust latchable 4-pin connector that allow easy plug and play functionality.

Features:

• 1-to-4 I²C switch to provide four isolated I²C buses
• Stackable with other Arduino and Arduino Compatible shields
• Provides pass through of all I/O as well as reset button and ICSP connector.
• Three selectable address bits for I²C switch to allow stacking of up to eight Shields
• Supports boards with the Arduino Shield interface, such as (but not limited to):
  • Duemilanove
  • Uno
  • Pro
  • Bluetooth
  • Mega/Mega 2560
• Works with 3.3 V and 5 V boards
• Plug and play I²C connectors that provide I²C, power, and ground signals

Specifications:

Downloads
OSEPP™ I²C Expansion Shield Schematic
Texas Instruments PCA9546A 4-Channel I²C Switch Data Sheet (PDF)