Introduction: Blynk and Omega2 Love

Picture of Blynk and Omega2 Love

And finally the Omega Onion2 is here, in the lab!

Do you know Onion Omega2? See the Omega official site!

Now I begin the experimentation of board. After the installation, and registration on onion cloud I try to connect the Onion2 for IoT use. The board have moore possibilities! One important step, for IoT, and for my projects, is the platform of control. For this project I use Blynk app.

Do you know Blynk App? See the official site!

Now you can register to blynk service, mount a led on Omega Onion2 and install the blynk library on Omega2.

A part of Omega Onion2 you must have a led and a resistor and a Blynk account.

Step 1: Install Software and Library

For use Blynk app on Omega 2 we must install the Blynk library!

First of all, you must connect the Omega2 to your LAN and internet. Open a terminal on your mac OS or Linux system and type:

ssh root@omega-xxxx.local

You can use the default "onioneer" after type the password

If you have Windows system you must install putty, and use this like a terminal.

Now you can install Blynk library on Omega Onion:

Update the opkg package

opkg update

Install blynk library

opkg install blynk-library

Install onoff package for switch ON/OFF the led

opkg install onoff-node

Install nano for edit a text file

opkg install nano

Step 2: Connect the Led

Picture of Connect the Led

Now you can use a led. You can connect the led to the PIN number 11.

Use this pin because the pin number 11 is a free GPIO pin without I2C or SPI port.

Connect directly the anode led to the PIN number 11, and after putting a resistor on the led cathode, and the resistor to the Omega2 GND. In this mode, you allow passage of all the current through to the led, and use a resistor to avoid a short-circuit.

Step 3: The Program

Picture of The Program

You can write the program by typing on terminal:

mkdir blynk
cd blynk
nano test.js

In the file called test.js you can write this.

var BlynkLib = require('/usr/bin/blynk-library');

var blank = new BlynkLib.Blynk('TOKEN');

var Gpio = require('/usr/bin/onoff-node/onoff.js').Gpio;

var led = new Gpio(11,'out');

var num = 1;

var v1 = new blynk.Virtual.Pin(1);

var v5 = new blynk.VirtualPin(5);

v1.on('write', function(param) { console.log('V1:', param); });

v5.on('write', function(param) { this.num ^=1; led.writeSync(this.num); });

Where you see TOKEN, you must type the Blynk Token. For obtain a blynk token id, you can use your Blynk app, and obtain a new token id.

node test.js

Open Blynk app and make a Dashboard with two button. The buttons are the virtual pin.

If you push virtual PIN number 1 you can see your terminal V1: on or off.

If you push PIN number 2 you can see your led on or off.

Comments

FabrizioB5 (author)2017-07-25

Hi,
Did you try to use omega2 + with arduino doc 2 and blynk?

Is there a possibility to directly read the analog and digital input from arduino and send the value to blynk using a js script?

Thanks

masteruan (author)FabrizioB52017-07-26

Great! Thanks

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