Node-RED - Printable Version

Node-RED - Printable Version

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+--- Thread: Node-RED (/showthread.php?tid=2395)

Node-RED - klliew - 10-15-2016

Node-RED is a tool for wiring together hardware devices, APIs and online services in new and interesting ways. It build on top of Nodejs

With this, PINE64 going to be more interesting. Smile

Tested with PINE64 2GB(1GB and 512MB shall work well, anyone with this please help to test out), Debian Base(Others Debian built shall work well, some Debian only support Nodejs 4.x).

1) Install Nodejs
sudo su

cd /home/debian
mkdir src
cd
wget https://nodejs.org/dist/latest-v6.x/node-v6.8.1-linux-arm64.tar.gz
tar -xvf node-v6.8.1-linux-arm64.tar.gz
cd node-v6.8.1-linux-arm64

sudo cp -R * /usr/local/
cd ..
rm -rf node-v6.8.1-linux-arm64

2) Install Node-Red
sudo npm cache clean
sudo npm install -g --unsafe-perm node-red

3) Boot time auto start
a) Create bash file for node-red service
sudo nano /lib/systemd/system/nodered.service

Code:
# systemd service file to start Node-RED

[Unit]

Description=Node-RED graphical event wiring tool.

Wants=network.target

Documentation=http://nodered.org/docs/

[Service]

Type=simple

# Run as normal debian user - feel free to change...

User=debian

Group=debian

WorkingDirectory=/home/debian

Nice=5

Environment="NODE_OPTIONS=--max-old-space-size=128"

# uncomment and edit next line if you need an http proxy

#Environment="HTTP_PROXY=my.httpproxy.server.address"

# uncomment the next line for a more verbose log output

#Environment="NODE_RED_OPTIONS=-v"

#ExecStart=/usr/bin/env node $NODE_OPTIONS red.js $NODE_RED_OPTIONS

ExecStart=/usr/bin/env node-red-pi $NODE_OPTIONS $NODE_RED_OPTIONS

# Use SIGINT to stop

KillSignal=SIGINT

# Auto restart on crash

Restart=on-failure

# Tag things in the log

SyslogIdentifier=Node-RED

#StandardOutput=syslog

[Install]

WantedBy=multi-user.target

b) Create bash file to start node-red
sudo nano /usr/bin/node-red-start

Code:
#!/bin/bash

echo -e '\033]2;'Node-RED console'\007'

nv=`node -v | cut -d "." -f1`

if [ "$nv" = "v0" ]; then

    echo -e "\033[0;47m                                                  \033[0m"

    echo -e "\033[0;47m    node.js v0.10 is NO LONGER supported.         \033[0m"

    echo -e "\033[0;47m    please consider upgrading to node.js LTS.     \033[0m"

    echo -e "\033[0;47m                                                  \033[0m"

    echo -e "\033[0;47m    you can do this with the following command:   \033[0m"

    echo -e "\033[0;47m        update-nodejs-and-nodered                 \033[0m"

    echo -e "\033[0;47m                                                  \033[0m"

    echo -e " "

fi

HOSTIP=`hostname -I | cut -d ' ' -f 1`

if [ "$HOSTIP" = "" ]; then

    HOSTIP="127.0.0.1"

fi

echo -e "Start \033[1m\033[38;5;88mNode-RED\033[0m"

echo " "

echo "Once Node-RED has started, point a browser at http://$HOSTIP:1880"

echo "On Pine64 Node-RED works better with the Firefox browser"

echo " "

echo -e "Use   \033[0;36mnode-red-stop\033[0m                          to stop Node-RED"

echo -e "Use   \033[0;36mnode-red-start\033[0m                         to start Node-RED again"

echo -e "Use   \033[0;36mnode-red-log\033[0m                           to view the recent log output"

echo -e "Use   \033[0;36msudo systemctl enable nodered.service\033[0m  to autostart Node-RED at every boot"

echo -e "Use   \033[0;36msudo systemctl disable nodered.service\033[0m to disable autostart on boot"

echo " "

echo "To find more nodes and example flows - go to http://flows.nodered.org"

if [ "$nv" = "v0" ]; then

    echo "You may also need to install and upgrade npm"

    echo -e "      \033[0;36msudo apt-get install npm\033[0m"

    echo -e "      \033[0;36msudo npm i -g npm@2.x\033[0m"

fi

sudo service nodered start

echo " "

sudo journalctl -f -n 0 -u nodered -o cat

c) Create bash file to stop node-red
sudo nano /usr/bin/node-red-stop

Code:
#!/bin/bash

echo -e '\033]2;'Node-RED console'\007'

echo -e "\033[1mStop \033[38;5;88mNode-RED\033[0m"

echo " "

echo -e "Use   \033[0;36mnode-red-start\033[0m   to start Node-RED again"

sudo service nodered stop

echo " "

exit

d) reload systemctl daemon
sudo systemctl daemon-reload
e) create auto start link
sudo systemctl enable nodered.service
4) Start Node-red without reboot
sudo systemctl start nodered.service
5) View node-red log:
sudo journalctl -f -u nodered -o cat
6) Configure node-red settings and install node
After first time start up, node-red will auto created a system folder at /home/debian/.node-red
To configure the setting, /home/debian/.node-red/settings.js
To install node, /home/debian/.node-red/node_modules
Default setting node-red will use PINE64 host name to generate flow file. /home/debian/.node-red/flows_pine64.json
If you will change host name, update the "flowFile" path in settings.js
a) to generate password protected
npm install -g node-red-admin
node-red-admin hash-pw
(Enter your password, it will return encoded password string, copy this string)

b) Famous Dashboard UI
npm install node-red-dashboard

c) Useful scheduler node
npm install node-red-contrib-bigtimer

There are thousand of node & flow at here.

after install new node, restart node-red.
sudo systemctl restart nodered.service

7) After all done, you will able to access node-red at browser (Default will use port 1880, can be update in settings.js)
http://[PINE64-IP-Address]:1880

8) Create a sample flow. You can import the this sample flow at Menu(Right Top Corner) -> Import -> Clipboard

Code:
[{"id":"60ba3a72.b24c54","type":"ui_button","z":"5bd1466.b4e63b8","name":"","group":"7e934c94.882ef4","order":0,"width":0,"height":0,"label":"Click Me!","color":"","icon":"","payload":"","payloadType":"str","topic":"","x":188,"y":93,"wires":[["529c0ec4.837a7"]]},{"id":"529c0ec4.837a7","type":"function","z":"5bd1466.b4e63b8","name":"","func":"var d = new Date();\nmsg.payload = d;\nreturn msg;","outputs":1,"noerr":0,"x":326,"y":90,"wires":[["29ee44ea.ad52ec"]]},{"id":"29ee44ea.ad52ec","type":"ui_text","z":"5bd1466.b4e63b8","group":"7e934c94.882ef4","order":0,"width":0,"height":0,"name":"","label":"Current Date","format":"{{msg.payload}}","layout":"row-spread","x":542,"y":95,"wires":[]},{"id":"7e934c94.882ef4","type":"ui_group","z":"","name":"Hello PINE64","tab":"1680a81f.a5aec8","disp":true,"width":"6"},{"id":"1680a81f.a5aec8","type":"ui_tab","z":"","name":"Home","icon":"dashboard"}]

9) This sample flow using node-red-dashboard, you can access the UI at http://[PINE64-IP-Address]:1880/ui/#/0

Hope you guy enjoy this. Big Grin

Have fun!!!

RE: Node-RED - MarkHaysHarris777 - 10-15-2016

Thank you. I fixed your 7) bullet point.

(it had a mistaken "frown face" due to a misplaced colon)

RE: Node-RED - klliew - 10-15-2016

(10-15-2016, 09:08 AM)MarkHaysHarris777 Wrote: Thank you. I fixed your 7) bullet point.

(it had a mistaken "frown face" due to a misplaced colon)

Thanks Mark. Smile

RE: Node-RED - MarkHaysHarris777 - 10-15-2016

The Node-Red Documentation is linked to the left.

RE: Node-RED - klliew - 10-15-2016

Install Mosquitto (MQTT)

Eclipse Mosquitto™ is an open source (EPL/EDL licensed) message broker that implements the MQTT protocol versions 3.1 and 3.1.1. MQTT provides a lightweight method of carrying out messaging using a publish/subscribe model. This makes it suitable for "Internet of Things" messaging such as with low power sensors or mobile devices such as phones, embedded computers or microcontrollers like the Arduino.

1) Install
sudo apt-get update

sudo apt-get install mosquitto

2) Configure Password
cd /etc/mosquitto/

mosquitto_passwd -c [output file name] [your username]
[your password]

sudo nano mosquitto.conf
Append this string at the bottom of the file.

Code:
password_file /etc/mosquitto/mqttPINE64pass

3) Manually Start/Stop (Default Auto Start)

sudo /etc/init.d/mosquitto start
sudo /etc/init.d/mosquitto stop

4) Receive and send from Node-Red

RE: Node-RED - SvdSinner - 12-14-2016

Awesome guide!

Thanks!

I would suggest one minor addition/edit to step 1:

(10-15-2016, 08:55 AM)klliew Wrote: cd /home/debian
mkdir src
cd

IMPORTANT: You must update the file names below. To update them, get the current link by going to https://nodejs.org/en/download/ and copying the link labeled Linux Binaries(ARM) --> ARMv8. Make sure that you update the bolded text to match the current file.

wget https://nodejs.org/dist/latest-v6.x/node-v6.8.1-linux-arm64.tar.gz[/i]
tar -xvf node-v6.8.1-linux-arm64.tar.gz
cd node-v6.8.1-linux-arm64

sudo cp -R * /usr/local/
cd ..
rm -rf node-v6.8.1-linux-arm64