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node-red-contrib-timer

node-red-contrib-timer is a rudementary timer.


Getting Started

Prerequisites

Installation

Install via Node-RED Manage Palette

node-red-contrib-timer

Install via npm

$ cd ~/.node-red
$ npm install node-red-contrib-timer
# then restart node-red

Usage

Configuration Pane

properties edit dialog

Node input

Start and stop with msg.payload:

  • true starts the timer.
  • false stops the timer.

Set expiry time with msg.payload:

  • int sets countdown in seconds.

Examples

Using topic to filter payload when cancelled

When no topic property is defined in the node, the incoming topic is copied over to the output. This can be used to filter out the expiry payload when the timer is cancelled.

canceling expiry

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Message property propagation

Properties defined in the incoming msg object are copied over to the outputs. The payload is changed and topic (if defined in the node).

msg propagation

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Override msg.topic in properties

When topic is defined in the node properties, incoming msg.topic is overriden.

topic overriding

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