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Add REV Servo Hub to Status Light Quick Reference (#3106)
* Add REV Servo Hub status LED patterns to quick reference Fixes #2976 * Update source/docs/hardware/hardware-basics/status-lights-ref.rst Co-authored-by: sciencewhiz <sciencewhiz@users.noreply.github.com> --------- Co-authored-by: sciencewhiz <sciencewhiz@users.noreply.github.com>
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‎source/docs/hardware/hardware-basics/status-lights-ref.rst‎

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### Status LEDs
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Each channel has a corresponding status LED that will indicate the sensed state of the connected :term:`PWM` signal. The table below describes each state’s corresponding LED pattern.
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Each channel has a corresponding status LED that will indicate the sensed state of the connected :term:`PWM` signal. The table below describes each state's corresponding LED pattern.
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+-----------------------+----------------+
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| State | Pattern |
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- 6V Power LED off, dim, or flickering with power applied = Over-current shutdown
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## REV Robotics Servo Hub
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[REV Servo Hub Status LED Patterns](https://docs.revrobotics.com/rev-crossover-products/servo/servo-hub/servo-hub-status-led-patterns)
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### General Status LED
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+-------------------------+----------------------------------------------------------------+
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| LED Color | Status |
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+=========================+================================================================+
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| Magenta Blinking | Powered on but not connected to a controller or |
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| | the REV Hardware Client |
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+-------------------------+----------------------------------------------------------------+
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| Blue Solid | Connected to REV Hardware Client |
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+-------------------------+----------------------------------------------------------------+
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| Solid Cyan | Connected to a roboRIO or CAN controller |
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+-------------------------+----------------------------------------------------------------+
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| Green Solid | Connected to a Control Hub or RS-485 controller |
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+-------------------------+----------------------------------------------------------------+
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| Orange/Cyan Blinking | Battery voltage is lower than 5.5V |
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+-------------------------+----------------------------------------------------------------+
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| Orange/Yellow Blinking | CAN fault detected |
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+-------------------------+----------------------------------------------------------------+
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| Orange/Magenta Blinking | Overcurrent fault |
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+-------------------------+----------------------------------------------------------------+
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## Spike relay configured as a motor, light, or solenoid switch
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.. image:: images/status-lights/spikeRelay1Light.png
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:alt: Single LED in the corner.
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:width: 600
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+-----------------------------------------+-----------------+---------------+-------------------------------------+
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| **Inputs** | **Outputs** | **Indicator** | **Motor Function** |
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+---------------------+-------------------+--------+--------+ | |
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| **Forward (White)** | **Reverse (Red)** | **M+** | **M-** | | |
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+---------------------+-------------------+--------+--------+---------------+-------------------------------------+
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| Off | Off | GND | GND | Orange | Off/Brake Condition (default) |
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+---------------------+-------------------+--------+--------+---------------+-------------------------------------+
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| On | Off | +12v | GND | Green | Motor rotates in one direction |
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+---------------------+-------------------+--------+--------+---------------+-------------------------------------+
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| Off | On | GND | +12v | Red | Motor rotates in opposite direction |
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+---------------------+-------------------+--------+--------+---------------+-------------------------------------+
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| On | On | +12v | +12v | Off | Off/Brake Condition |
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+---------------------+-------------------+--------+--------+---------------+-------------------------------------+
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.. note:: 'Brake Condition' refers to the dynamic stopping of the motor due to the shorting of the motor inputs. This condition is not optional when going to an off state.
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## Spike relay configured as for one or two solenoids
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.. image:: images/status-lights/spikeRelay2Light.png
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:alt: Single LED in the corner.
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:width: 600
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+-----------------------------------------+-----------------+---------------+--------------------------------+
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| **Inputs** | **Outputs** | **Indicator** | **Motor Function** |
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+---------------------+-------------------+--------+--------+ | |
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| **Forward (White)** | **Reverse (Red)** | **M+** | **M-** | | |
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+---------------------+-------------------+--------+--------+---------------+--------------------------------+
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| Off | Off | GND | GND | Orange | Both Solenoids Off (default) |
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+---------------------+-------------------+--------+--------+---------------+--------------------------------+
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| On | Off | +12v | GND | Green | Solenoid connected to M+ is ON |
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+---------------------+-------------------+--------+--------+---------------+--------------------------------+
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| Off | On | GND | +12v | Red | Solenoid connected to M- is ON |
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+---------------------+-------------------+--------+--------+---------------+--------------------------------+
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| On | On | +12v | +12v | Off | Both Solenoids ON |
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+---------------------+-------------------+--------+--------+---------------+--------------------------------+
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## CANCoder Encoder
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.. image:: images/status-lights/cancoder-status-lights.png

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