Control Hub Specifications

The REV Robotics Control Hub (REV-31-1595) is an affordable all in one educational robotics controller that provides the interfaces required for building robots, as well as other mechatronics, with multiple programming language options. The Control Hub was designed and built as an easy to use, dependable, and durable device for use in classroom and the competition. It features an Android operating system, built-in dual band Wi-Fi (802.11 ac/b/g/n/w), and a mature software package designed for both basic and advanced use cases. When the Control Hub software is updated with new features, the controller can receive a "field upgrade," through an update process that is fast and simple.

The Control Hub is an approved device for use in FIRST® Global and FIRST Tech Challenge.

Port Label	Qty	Connector	Description
Battery	2	XT-30	Connect one 12V NiMh battery, add an Expansion Hub with second port
Motor	4	JST VH, 2-pin	Motor power output
Encoder	4	JST PH, 4-pin	Quadrature encoder input
Servo	6	0.1” Header	Extended range 5V servo output
+5V Power	2	0.1” Header	Power for auxiliary device(s)
Analog	4	JST PH, 4-pin	Analog input with two channels per connector.
Digital	8	JST PH, 4-pin	Digital Input/Output with two channels per connector
I2C	4	JST PH, 4-pin	Four separate I2C busses
RS485	2	JST PH, 3-pin	Use this serial communication port to add an Expansion Hub
UART	2	JST PH, 3-pin	Debugging only
USB C	1	USB C	Connect directly to the Control Hub via PC, USB 2.0
USB 2.0	1	USB A	Connect USB cameras and other USB peripherals to the Control Hub
USB 3.0	1	USB A	Connect USB cameras and other USB peripherals to the Control Hub
HDMI	1	HDMI A	Supports 4k @ 60Hz

Specifications

The following tables provide the operating and mechanical specifications for the Control Hub.

General Specifications

Feature type	Description
Processor(s)	RK3328 Quad-core ARM® Cortex-A53 Texas Instruments ARM® Cortex®-M4
Memory	1GB LPDDR3
Storage†	8GB eMMC 4.51
Wireless	802.11 ac/b/g/n/w Wi-Fi; Dual Band 2.4 & 5 GHz Bluetooth 4.1
Graphics‡	GPU - ARM® Mali 450MP4 HDMI 2.0 support for 4k @ 60Hz

†	Supports expandable storage through the SD Card slot
‡	Display graphics supported through an external display over HDMI

DO NOT exceed the absolute maximum electrical specifications. Doing so will cause permanent damage to the Control Hub and will void the warranty.

Input Power Specifications

Parameter	Min	Typ	Max	Units
Operating voltage range ($V_{IN}$)	8	12	15	V
Absolute maximum supply voltage	-	-	15	V

Motor Port Specifications

Parameter	Min	Typ	Max	Units
Continuous output current †	-	-	10	A
Absolute maximum output current ‡	-	-	20	A

†	Exceeding the continuous current maximum depends on many thermal factors. The outputs will self protect once they approach their thermal limit.
‡	Maximum current is ultimately limited by the in-line battery fuse.

Encoder Port Specifications

Parameter	Min	Typ	Max	Units
Encoder port input voltage	0	-	3.3	V
Encoder port supply voltage	-	-	3.3	V
Encoder port total supply current	-	-	500	mA

See Sensors - Encoders for more information on encoders and using the encoder ports. For using non-REV motor encoders see Using 5V Sensors - Encoders for more details.

Digital Port Specifications

Parameter	Min	Typ	Max	Units
Digital port input voltage	0	-	3.3	V
Digital port supply voltage	-	-	3.3	V
Digital port total supply current	-	-	1	A

See Sensors - Digital for more information on using the digital ports. See Using 5V Sensors for information on using 5V logic level devices with the digital ports.

Analog Port Specifications

Parameter	Min	Typ	Max	Units
Analog port input voltage range †	0	-	5	V
Analog port supply voltage	-	-	3.3	V
Analog port total supply current	-	-	500	mA

†	The analog input will accept up to 5V. When using 5V analog sensors, a custom wiring harness is needed to provide 5V of power for the sensor as the power pin provides 3.3V.

See Sensors - Analog for more information on using the analog ports.

I2C Port Specifications

Parameter	Min	Typ	Max	Units
I2C port input voltage range	0	-	3.3	V
I2C port supply voltage	-	-	3.3	V
I2C port total supply current	-	-	500	mA
Bus speed	-	100/400	-	kHz

See Sensors - I2C for more information on using the I2C ports. See Using 5V Sensors for information on using 5V logic level devices with the I2C ports.

Servo Port Specifications

Parameter	Min	Typ	Max	Units
Servo output signal voltage	0	-	5	V
Servo port supply voltage	-	5	-	V
Servo port pair total supply current †	-	-	2	A
Absolute maximum total supply current ‡	-	-	5	A
Servo port output pulse range	500	-	2500	μs

†	Total supply is shared across pairs of ports (0-1, 2-3, 4-5)
‡	The 5A total supply current for all servo ports and +5V power ports is shared.

+5V Power Port Specifications

Parameter	Min	Typ	Max	Units
+5V power port output voltage	-	5	-	V
+5V power port pair total supply current †	-	-	2	A
Absolute maximum total supply current ‡	-	-	5	A

†	Total supply current is shared across both ports
‡	The 5A total supply current for all servo ports and +5V power ports is shared.

Mechanical Specifications

Parameter	Min	Typ	Max	Units
Body length	-	103	-	mm
Body width	-	143	-	mm
Body height	-	29.5	-	mm
Weight	-	209	-	g
Mounting hole pitch	-	16	-	mm