Overview; Expansion Hub Basics - REV Robotics Expansion Hub Manual

1 OVERVIEW

1.1 Expansion Hub Basics

The REV Robotics Expansion Hub is a low-cost education device that can communicate with any computer (Commonly
an Android Phone or the REV Robotics Control Hub) 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 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
o
Mounting holes on a 16mm spacing
o
Input Voltage:
•
12V Nominal (8-15VDC)
o
3.3V Ports
•
8x Digital I/O: 1A Source Max
o
4x I2C 100kHz/400kHz Busses:
o
500mA Max
4x 12-bit Analog Inputs: 500mA Max
o
4x Quadrature Encoder Inputs:
o
500mA Max
• 5V Ports
5V Aux Power: 2A Max
o
Servos: 2A Maximum per Pair
o
USB 2.0: 1.5A Max
o
PORT QTY
Battery 2
Motor 4
Encoder 4
Servo 6
5V Aux Power 2
Analog 4
Digital 8
I2C 4
RS485 2
UART 2
USB 1
Expansion Hub Guide – Rev 4
CONNECTOR DESCRIPTION
Connect one 12V NiMh battery, use the second connector to add
XT30
another Expansion Hub
JST VH, 2-pin Motor power output
JST PH, 4-pin Quadrature encoder input
0.1" Header Extended range 5V servo output (500-2500ms)
0.1" Header Auxiliary device 5V/2A
JST PH, 4-pin Analog input 0-3.3V with two channels per connector
JST PH, 4-pin Digital Input/Output with two channels per connector
JST PH, 4-pin Four separate I2C busses, 400kHz bus speed
JST PH, 3-pin Use this serial communication port to add another Expansion Hub
JST PH, 3-pin Debugging only
Mini Type Connect directly to the Robot Controller Android phone or PC
© REV R obotics, LLC 2017 1