FTC:Control Hubs
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The REV Control Hub is the “brain” of a FIRST Tech Challenge robot. It has many different ports to connect to the motors, servos, and sensors on the robot. It is the most important part of a robot because it connects to the Driver Station and allows a team to control their robot.
Ports
There are many different types of ports on the REV Control Hub, and each of them is meant to connect to different electronics.
| Label | Connection Type | Location | Purpose |
|---|---|---|---|
| Battery | XT-30 | Top Left | Connects to the battery |
| Motor | 2-Pin JST VH | Left Side | Connects to the motor’s power |
| Encoder | 4-Pin JST VH | Left Side | Connects to the motor encoders |
| Servo | 0.1” Header | Bottom Side | Connects to 5V servos |
| 5V Power | 0.1” Header | Bottom Side | Provides power to other devices (ie: LEDs) |
| Analog | 4-Pin JST PH | Lower Right Side | Connects to analog devices (ie: potentiometer) |
| Digital | 4-Pin JST PH | Middle of Right Side | Connect to digital devices (ie: buttons or switches) |
| I2C | 4-Pin JST PH | Upper Right Side | Connects to I2C applicable devices (ie: color sensor) |
| RS485 | 3-Pin JST PH | Upper Right Side | Connects to an Expansion Hub |
| UART | 3-Pin JST PH | Upper Right Side | Used for debugging |
Status Light Guide
The light on the Control Hub has many different patterns each of which means different things.
| Color | Pattern | Meaning |
|---|---|---|
| Blue | Constant | The Control Hub has power and is waiting to connect to a Driver Station |
| Green | Constant | The Control Hub has power and is connected to the Driver Station |
| Blue | Flashing | The Control Hub has lost connection with the Driver Station |
| Orange | Flashing | The Control Hub has low power |
| Purple/Orange | Flashing | The Control Hub is currently being configured |
| Magenta | Flashing | The Control Hub has changed to 5 GHz wifi |
| Yellow | Flashing | The Control Hub has changed to 2.4 GHz wifi |
Additional Resources
