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