This application consists of 2 services:
node-red= A Node-RED application that can be accessed remotely via the balena publicURL. It consists of the following 2 flows (or tabs):Supervisor: uses node-red-contrib-balena to interact with the balena-supervisor.GPIO: simple flow shows how the node node-red-node-pigpiod can be used to read GPIO pins from the raspberry pi.
pigpiod= this service runs the daemon pigpiod. This daemon must be running if you want to interact with the GPIO pins of your raspberry pi using the Node-RED node node-red-node-pigpiod
Configure node-red service via environment variables
| Variable Name | Default | Description |
|---|---|---|
| PORT | 1880 |
the port that exposes the Node-RED editor. Note that host port 80 is mapped to 1880 so that Node-RED editor can also be accessed through the Balena publicURL if activated. |
| USERNAME | none |
the Node-RED admin username |
| PASSWORD | none |
the Node-RED admin password hash |
You must set the USERNAME and PASSWORD environment variables to be able to save or run programs in Node-RED.
The hash for the PASSWORD variable can be generated using the node-red-admin
command line tool. Instructions for generating a password hash can be found in
the Node-RED documentation.
More information about using and setting environment variables can be found in
the balena docs.
Copyright 2016 balena Ltd.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.