node-red-install

Install Node-RED for Raspberry Pi 3 on a clean system without having a preinstalled node-red

This is a pre step but doing it correctly

from the start will make everything easy and save you a lot of time

Go here to get the latest version

https://github.com/node-red/linux-installers

then run this bash script in the terminal

That will do everything needed for the basic set up and get you a menu entry

in Programming to start node red

bash <(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-nodered)

after that you need to install just few more dependencies for my GPIO controller demo which uses the UI

I did this from within the node red using Manage palette to install the following dependencies
node-red-dashboard
node-red-contrib-ui-svg

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node red paste this in chromium (low level node red code)
http://localhost:1880/

and for the GUI of the GPIO controller (user visual code)
http://localhost:1880/ui/