Expansion Hub Basics

The REV Robotics Expansion Hub (REV-31-1153) is a low-cost education device that can communicate with any computer (Commonly the REV Robotics Control Hub or an Android Phone) to provide the interfaces required for building robots and other mechatronics. The Expansion Hub was purposed built to stand up to the rigors of the classroom and competition field. It features a mature firmware designed for basic and advanced use cases with the ability to be field upgraded in the future.

The IO ports of the Expansion Hub are identical in specification to the Control Hub. Within this documentation, many sections may refer to the Control Hub, but the connections are the same for the Expansion Hub.

The REV Robotics Expansion Hub is an approved device for use in the FIRST Tech Challenge and FIRST Global.

• Physical Dimensions

  • 143mm X 103mm X 29.5 mm

  • Mounting holes on a 16mm spacing

• Input Voltage

  • 12V nominal (8-15V DC)

• Processors

  • Texas Instruments ARM® Cortex-M4

• 3.3V Ports

  • 8x Digital I/O: 1A source max

  • 4x I2C 100kHz/400kHz Busses: 500mA source max

  • 4x 12-bit Analog Inputs: 500mA source max

  • 4x Quadrature Encoder Inputs: 500mA source max

• 5V Ports

  • +5V Power: 2A source max

  • Servos: 2A source maximum per pair (0-1, 2-3, 4-5)