Connect SAJ Solar Inverter to Node-Red (part 4)

Node-Red flow part 3

Node 14:

Out of order cath node

Node 15:

Out of order function node

Node 16:

Convert Date & Time function node

Node 17:

Display Date text node

Node 18:

Display Time text node

Connect SAJ Solar Inverter to Node-Red (part 3)

Node-Red flow part 2

Node 7:

Display Day power text node

Node 8:

Display Day power gauge node

Node 9:

Display State text node

Node 10:

Display Power text node

Node 11:

Display Power gauge node

Node 12:

Display Power chart node

Node 13:

Display Max Power text node

Connect SAJ Solar Inverter to Node-Red (part 2)

Node-Red flow part 1

Node 1:

Inject every second a Timestamp

Node 2:

Connect to http://192.168.1.24/real_time_data.xml

Node 3:

Convert XML to a Javascript Object

Node 4:

Convert the Javascript Object to individual Objects

Node 5:

Convert the Onjects

Node 6:

Select the objects

Connect SAJ Solar Inverter to Node-Red (part 1)

My SAJ Solar Inverter:

Model: Sununo Plus 4K-M:

http://www.saj-solar.com/

SAJ Solar Inverter local webpage:

http://192.168.1.24

SAJ Solar Inverter local data:

http://192.168.1.24/real_time_data.xml

Node-Red program: 

Node-Red screenshot:

https://192.168.1.31:1880/ui

Node-Red Security

Log in to the Raspberry Pi using Putty

Stop Node-Red

• sudo systemctl disable nodered.service
• node-red-stop
• sudo reboot & exit

Generating new SSH keys

• cd .node-red (cd /home/pi/.node-red or cd ~/.node-red)
• openssl genrsa -out privatekey.pem 1024
• openssl req -new -key privatekey.pem -out private-csr.pem
• openssl x509 -req -days 365 -in private-csr.pem -signkey privatekey.pem -out certificate.pem
• ls -all and you find 3 new files:
• certificate.pem
• private-csr.pem
• privatekey.pem

 Update settings.js

• nano settings.js
• uncomment lines:
• var fs=required("fs");
• https: {
• key: fs.readFileSunc('/home/pi/.node-red/privatekey.pem')
• cert: fs.readFileSunc('/home/pi/.node-red/certificate.pem')
• },
• adminAuth: {
• type: "credentials",
• users: [{
• Username: "admin",
• password: " --- ",
• permissions: "*"
• }]
• },

• save & exit settings.js 

Install node-red-admin

• su (to log as root)
• npm install -g node-red-admin
• exit
• pwd
• cd .node-red
• node-red-admin hash-pw

Enter the password you want, copy the hash code and save this to the 'password' line in the settings.js file.

Start Node-red

• sudo systemctl enable nodered.service
• node-red-start

Now you cane see Node-red in your browser by using https://'ip adres raspberry pi':1880
and login with admin and your password.

Update Node-Red on the Raspberry Pi

Update Raspberry Strecht Lite to the latest version.

Log in to the Raspberry Pi using Putty
Type the following commands one by one

• sudo rpi-update
• sudo reboot & exit (reboot the Raspberry Pi)
• sudo apt-get -y update
• sudo apt-get -y upgrade
• sudo apt-get dist-upgrade
• sudo reboot & exit (reboot the Raspberry Pi)

Install the latest Node.js and Npm

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

To find the version type this commands:

node -v
v8.9.3

npm -v
5.5.1

Install n

• sudo npm install -g n
• sudo n latest
• sudo npm install -g npm@latest
• sudo reboot & exit (reboot the Raspberry Pi)

To find the version type this commands: 
node -v
v9.3.0
npm -v
5.6.0

Start and Stop Node-Red

node-red-stop - to stop Node-red
node-red-start - to start Node-Red
node-red-log - to view the recent log output
sudo systemctl enable nodered.service - to autostart Node-Red at every boot
sudo systemctl disable nodered.service - to disable autostart on boot

Fix the Serialport Error

• cd .node-red
• node-red-stop
• sudo npm rebuild
• de-red-start (ctrl c to exit Node-red)

Start Node-Red as a service

• sudo systemctl enable nodered.service
• node-red-start (ctrl c to exit Node-red)

Now you cane see Node-red in your browser by using http://'ip adres raspberry pi':1880

https://youtu.be/B0hpv_8is0Q

Node-Red

Install Node-red on the Raspberry Pi

Node-RED is a programming tool for wiring together hardware devices, APIs and online services in new and interesting ways.
It provides a browser-based editor that makes it easy to wire together flows using the wide range of nodes in the palette that can be deployed to its runtime in a single-click.

What do you need?

1. Raspberry Pi
2. Power supply 5V 2A
3. SD Card with Raspbian Strech Lite link
4. UTP Cable
5. Case for the Raspberry Pi
6. PuTTy on a Windows or Linux computer.

https://youtu.be/3SxMvdSnaQk