node-red-contrib-add

A Node-RED node to calculate sum of incoming numerical values.

This node is based on Eisbehr's node-red-contrib-average.

Install

Use the "Manage palette" option inside Node-RED, or within your Node-RED user directory (typically ~/.node-red), run the command:

npm install node-red-contrib-add

Usage

Calculate the sum of incoming msg.payload values.

Messages not containing a valid numeric value will be rejected.

Will return the current sum of all msg.payload values as output msg.payload. Every other data will be pushed through.

The sum can be reset with an incoming message that contains msg.reset. Then all stored data will be removed and the initial sum starts at zero again.

Sample Node-RED flow is included in /examples folder

License

This project is licensed under the Apache 2.0 license.

Author

Harshad Joshi @ Bufferstack.IO Analytics Technology LLP, Pune