How Do I Start Node-Red?

Once installed as a global module you can use the node-red command to start Node-RED in your terminal. You can use Ctrl-C or close the terminal window to stop Node-RED. You can then access the Node-RED editor by pointing your browser at http://localhost:1880.

How do I open Node-RED project?

It will take you through the following steps:

1. Setup your version control client. Node-RED uses the open source tool Git for version control.
2. Create your project. The next step lets you name your project and given it a description.
3. Create your project files.
4. Setup encryption of your credentials file.

How do I start a pm2 service?

Process management

1. # start and add a process to your list pm2 start app.js # show your list pm2 ls # stop and delete a process from the list pm2 delete app.
2. # kill the process but keep it in the process list pm2 stop app # start the process again pm2 start app # both stop and start pm2 restart app.

How do I uninstall pm2?

Run the following commands from the command prompt from the DR_Install folder:

1. pm2 delete pm2.config.js.
2. pm2 kill.
3. npm uninstall -g pm2.

How do I see nodes in red dashboard?

The Dashboard Layout

1. On top right corner of the Node-RED window you have a tab called dashboard.
2. Select that tab (1). To add a tab to the user interface click on the +tab button (2).
3. Once created, you can edit the tab by clicking on the edit button (3).

How do nodes work in red?

This tutorial introduces the Node-RED editor and creates a flow that demonstrates the Inject, Debug and Function nodes.

1. Access the editor. With Node-RED running, open the editor in a web browser.
2. Add an Inject node.
3. Add a Debug node.
4. Wire the two together.
5. Deploy.
6. Add a Function node.

How do I connect Node-RED to ESP32?

In order to integrate the ESP32 to the smartphone, it is necessary:

1. Create a dashboard using Node-RED so that the user can interact with ESP32 through the smartphone.
2. Connect somehow the ESP32 to Node-RED so that Node-RED can receive sensor data and send commands to the ESP32 to control LEDs.

How do I restart PM2?

1. Restart at cron time. Via CLI:
2. Restart on file change. PM2 can automatically restart your application when a file is modified in the current directory or its subdirectories:
3. Restart Delay.
4. No Auto Restart.
5. Skip Auto Restart For Specific Exit Codes.
6. Exponential Backoff Restart Delay.

How do I start NPM PM2?

Yes. Use pm2 start npm –no-automation –name {app name} — run {script name} . It works. The –no-automation flag is there because without it PM2 will not restart your app when it crashes.

Does PM2 start on boot?

1 Answer. Not by default, but PM2 can do so using a startup script: PM2 can generate startup scripts and configure them in order to keep your process list intact across expected or unexpected machine restarts.

How do I stop a pm2 server?

“how to stop a server using pm2” Code Answer’s

1. pm2 start app. js –name “my-api”
2. pm2 start web. js –name “web-interface”
3. pm2 stop web-interface.
4. pm3 restart web-interface.

How do I view pm2 logs?

Type pm2 log in a shell and you get an overview of the last 15 log lines and the last 15 error lines in realtime. At the top of these log lines, the location of your logfile is shown. You can also type pm2 log –lines 1000 to show more lines, in this case 1000.

How do I un install Node JS?

To completely uninstall node + npm is to do the following:

1. go to /usr/local/lib and delete any node and node_modules.
2. go to /usr/local/include and delete any node and node_modules directory.
3. if you installed with brew install node, then run brew uninstall node in your terminal.

What is Dashboard in Node-RED?

The node red dashboard is an add-on module that lets you create live dashboards.The Node_red dashboard files are stored in a folder called node-red-dashboard in the node_modules folder. The install adds a new category to the node palette and a collection of UI (User Interface) nodes or widgets.

What is the command to install the Node-RED dashboard from the command line?

Quick Start

1. Install Node. js. Download the latest 14. x LTS version of Node.
2. Install Node-RED. Installing Node-RED as a global module adds the command node-red to your system path. Execute the following at the command prompt: npm install -g –unsafe-perm node-red.
3. Run Node-RED. Once installed, you are ready to run Node-RED.

Is Node-RED easy to learn?

Node Red is very good in enabling hardware devices, small and large, APIs, and all kinds of online services to work together. I found that its learning curve was relatively gentle, and once I got my head around how flows are assembled, configured and executed, I was able to quickly create prototypes.

How do I deploy a node in red?

Deploying the flow

1. Our flow is finished, so we can deploy it. Click on the big red Deploy button on the top right of the screen.
2. Now click on the blue square on the left of the On node to inject the message 1 . The Green LED node receives the message and your LED should light up.

Where is Node-RED?

Node-Red Settings
on Windows it is located in c:node-install-directorynode-modulesnode-red . On Linux the settings. js file is copied from the /usr/lib/node-modules/node-red/ folder to your . node-red folder in your home directory when you start node-red, and there is no settings.

How do I connect ESP8266 to node-red?

To connect the MQTT broker to Node-REd, double-click the MQTT output node.
Drag the following nodes to the flow – see figure below:

1. switch – this will control the ESP8266 output.
2. mqtt output node – this will publish a message to the ESP8266 accordingly to the switch state.

How do I publish MQTT ESP32?

To implement a MQTT client using ESP32 we have to follow this steps:

1. Connect the ESP32 to the Wifi.
2. Set up and configure the MQTT client.
3. Set up and configure the BME280 sensor.
4. Connect the MQTT client for ESP32 to the MQTT broker.
5. publish sensor readings to MQTT topics periodically.

Is node-red a MQTT broker?

Because this MQTT broker is implemented by Node. js, you can use MQTT-in and MQTT-out nodes without MQTT environment like Mosquitto.