How to Use Control Hub: Examples, Pinouts, and Specs

The Control Hub (REV-31-1595) by REV Robotics is a versatile and powerful central unit designed for robotics and automation projects. It serves as the brain of a system, capable of interfacing with a variety of sensors, processing data, and controlling multiple components within a circuit. Common applications include educational robotics platforms, hobbyist projects, and prototype development for industrial automation.

• Processor: ARM Cortex-A53 (Quad-Core)
• Operating System: Android-based
• Memory: 1 GB RAM, 16 GB eMMC
• Connectivity: Wi-Fi, Bluetooth
• Input Voltage: 12V DC
• Output Ports: Multiple PWM, Digital I/O, Analog Input, I2C, UART, USB
• Dimensions: 110mm x 75mm x 18mm
• Weight: 110g

1. Powering the Control Hub:

   • Ensure that the power supply is 12V DC and does not exceed the maximum current rating.
   • Connect the positive lead to the 5V power supply pin and the negative lead to the ground pin.

2. Connecting Sensors and Actuators:

   • For digital devices, use the Digital I/O pins.
   • For PWM controlled devices like servos, connect to the PWM output pins.
   • Analog sensors can be connected to the Analog Input pins.
   • I2C devices should be connected to the I2C bus pins, ensuring correct data (SDA) and clock (SCL) lines.
   • Serial devices can be interfaced through the UART pins.

3. Programming the Control Hub:

   • The Control Hub can be programmed using the REV Hardware Client or through the Android Studio environment.
   • Ensure that the appropriate drivers and software are installed on your development computer.

• Always disconnect the power before making or altering connections.
• Use proper ESD precautions when handling the Control Hub to prevent damage.
• Ensure that all connections are secure to prevent intermittent behavior.
• Avoid placing the Control Hub in environments with extreme temperatures or moisture.

• Power LED is not lit: Check the power supply and connections.
• Device not recognized by the computer: Ensure that the drivers are installed and the USB cable is functioning.
• Sensors not responding: Verify that the sensor is correctly wired and configured in the software.

Q: Can the Control Hub be powered by a battery? A: Yes, as long as the battery provides a stable 12V DC output.

Q: How do I update the firmware on the Control Hub? A: Use the REV Hardware Client to check for and apply firmware updates.

Q: What programming languages are supported? A: The Control Hub supports Java for Android development.

Q: Can the Control Hub be used with an Arduino UNO? A: While the Control Hub is not directly compatible with Arduino hardware, it can communicate with an Arduino UNO via UART or I2C for extended functionality.

// Example code for communicating between Arduino UNO and Control Hub
#include <Wire.h>

void setup() {
  // Start the I2C bus as a master
  Wire.begin();
  // Start serial communication for debugging
  Serial.begin(9600);
}

void loop() {
  // Send a message to the Control Hub
  Wire.beginTransmission(0x04); // Control Hub I2C address
  Wire.write("Hello, Control Hub!");
  Wire.endTransmission();

  delay(1000); // Wait for a second
}

Note: The I2C address for the Control Hub should be set according to your specific setup.

For further assistance, please refer to the manufacturer's documentation or contact REV Robotics support.