Open node-red

To run node-red you need to write this cmd:

node-red-start

if you use putty on your computer to remote raspberry pi so you just open your browser and put the link: http://IP:1880 then you will get Node-RED as figure below. Note: if you don't use putty to remote so you need to type: http://127.0.0.1:1880/

Ex: my raspberry pi is 192.168.43.203, so I need to put http://192.168.43.203:1880/

Now you can enjoy with node-red.