Node Red Messages from the Andino X1 Board
A Node-RED node that handles messages from the Andino X1 Board.
How to Install
1.) Some preperation
First of all you need Git
sudo apt -y install git
Enable the communication to the Arduino via /dev/ttyAMA0. Please see here
2.) Node Red for Raspberry Pi
2.1) Useful extensions
To save write cycles on your SD Card you can install Log2Ram which stores the Log Files in memory.
sudo apt -y install git
git clone https://github.com/azlux/log2ram.git
cd log2ram
chmod +x install.sh
sudo ./install.sh
sudo reboot now
check if its running
df -h
log2ram 40M 452K 40M 2% /var/log
After that you can install Node Red First Node.js
bash <(curl -sL https://raw.githubusercontent.com/node-red/raspbian-deb-package/master/resources/update-nodejs-and-nodered)
run Node Red from terminal
node-red-pi
To run Nore-Red in background on boot:
sudo systemctl enable nodered.service
3.) Node for Andino X1
Run the following command in your Node-RED user directory - typically ~/.node-red
npm install node-red-contrib-andinox1
What this Node does is 1.) Convert the Serial Message vom the Arduino Controller to an Payload Object so that you can access payload.Counter1 for instance. 2.) Convert a Boolean to a Relay-Message for the Microcontroller (see the Example)
From the Controller
msg.payload : string[23]
":0664{0026,0016}{1,0}↵"
After the Andino Node
msg.payload : Object
{ Counter1: 38, Counter2: 22, Pin1: 1, Pin2: 0 }
Usage
Wire the ttyAMA0 to the input and set the filter to Events. Wire the output to ttyAMA0, configure Relais1 or Relais2 and send true/false 0/1 to set the relais.
Example
Flow
Dashboard
Properties
Output Payload
Serial Settings
Some infos and Samples about Node Red
https://randomnerdtutorials.com/getting-started-with-node-red-on-raspberry-pi/
Author
- 2020 by [AndinoSystems]
- Contact us by email