The Rotator Controller feature plugin allows SDRangel to send commands to GS-232 and SPID rotators as well as hamlib's rotctld, via a serial or TCP connection.
Azimuth and elevation can be set manually by a user in the GUI, via the REST API, via another plugin, such as the Map Feature, the ADS-B Demodulator, or the Star Tracker, or by controller/gamepads (such as an XBox Wireless Controller).
This button starts or stops the plugin. When the plugin is stopped, azimuth and elevation commands will not be sent to the rotator.
When started, the background will be green if the rotator is pointing at target azimuth and elevation within the specified tolerance. When off target (i.e. while rotating) the background will be yellow.
Specifies the target elevation (angle in degrees) to point the antenna towards. Valid values range from 0 to 180 degrees, where 0 and 180 point towards the horizon and 90 degrees to zenith.
For example, this allows an aircraft to be tracked, by setting the Source to the ADS-B Demodulator plugin, or the Moon to be tracked by setting Source to the Star Tracker plugin.
The azimuth offset specifies an angle in degrees that is added to the target azimuth before sending to the controller. This allows for a misalignment of the rotator to be corrected.
The elevation offset specifies an angle in degrees that is added to the target elevation before sending to the controller. This allows for a misalignment of the rotator to be corrected.
On Linux, the [xone driver](https://github.com/medusalix/xone) has support for the Xbox Wireless Controller, that isn't supported by the older xpad driver that is included with Ubuntu.
Specifies High (H) or Low (L) Sensitivity mode. This is how fast coordinates will change for a given control stick movement.
High Sensitivity is used for coarse target/offset adjustment, whereas Low sensitivity is used for fine target/offset adjustment.
The sensitivity in each mode can be set in the Input Configuration Dialog (22).
<h3>24: (T) Enable Target Control</h3>
When checked, the target coordinates can be set with the input controller. When unchecked, the axes controlling the target will be ignored.
<h3>25: (O) Enable Offset Control</h3>
When checked, the offset coordinates can be set with the input controller. When unchecked, the axes controlling the offset will be ignored.
<h3>26: Input Control Configuration</h3>
Pressing the Config... button will display the Input Configuration Dialog:
<h4>1: Configuration</h4>
The Configure buttons allow setting which axis is assigned to target or offset control. To assign an axis, press the corresponding Configure button, then move the controller axis.
<h4>2: Deadzones</h3>
Deadzones can be set individually for each for the 4 axes. A deadzone specifies the amount a controller axis can be moved without a response.
This can be used to prevent very small movements around the center position on a stick from adjusting the target, or eliminate target adjustments
when a stick is centered, but is reporting a non-zero position on the axis.
Specifies the sensitivity of the input in Low and High Sensitivity mode (23). The higher the value, the faster coordinates will change for a given control stick movement.
Full details of the API can be found in the Swagger documentation. Here is a quick example of how to set the azimuth and elevation from the command line:
