A Node-RED node that provides the position of the sun
A Node-RED node to calculate the position of the sun at a given location.
Run the following command in the root directory of your Node-RED install
npm install node-red-contrib-sunpos
This node calculates the position of the sun at a given location. It is configured with the following properties:
- lat: latitude of the location
- lon: longitude of the location
- start: time of day that constitutes the start of daylight hours
- startOffset: offset to be applied for start of daylight hours, a negative value brings the start forward, a positive value delays
- end: time of day that constitutes the end of daylight hours
- endOffset: offset to be applied for end of daylight hours
This node emits a msg.payload with the following properties:
- sunInSky: boolean value indicating whether it is currently considered daylight hours
- altitude: altitude of the sun above the horizon in degrees
- azimuth: azimuth of the sun in degrees, where 0 is North
- altitudeRadians: altitude of the sun above the horizon in radians
- azimuthRadians: azimuth of the sun in radians, where 0 is South, a positive value is in the west and negative value in the east
The node also sets msg.location with the coordinates of the location and msg.topic to "sun".
The node also reports its status within the Node-RED flow editor, using colour to indicate whether it is currently considered daylight hours.