Arduino IoT Cloud ESP32, Control an LED

(Last Updated On: September 5, 2021)

Arduino IOT Cloud ESP32:

Arduino IoT Cloud ESP32, Control an LED- In this tutorial, we will discuss how to get started with the Arduino IoT cloud using ESP32 WiFi + Bluetooth Module. After reading this article, you will be able to make your very first project using the Arduino IoT cloud and start controlling things and you can also monitor different types of sensors. As this article is for the absolute beginners so I will try my best to keep things simpler, for this reason I have decided to start only with the LED. We will be using the ESP32 onboard LED which is connected with the GPIO5. If you learn how to control an LED using the Arduino IoT Cloud then you can control almost anything which you can think of, you can replace an LED with a relay and then you can start controlling higher loads.



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Creating an account on the Arduino IOT cloud:

So to get started with the Arduino IoT Cloud you will need to first create an account on the Arduino official website.

Now when the page is opened, click on the SIGN IN button

Arduino IoT Cloud ESP32

 

If you are a returning user and you have an account on the Arduino then you can simply log into your account using user username or email and a password. If you are a new user then you can click on the Create one as you can see in the image below.

Arduino IoT Cloud ESP32

Next, you will need to enter your date of birth and then you can click on the next button to continue.

Arduino IoT Cloud ESP32




Then enter your email address, user name, and password and finally, click on the SIGN UP,  make sure you have checked the boxes.

Arduino IoT Cloud ESP32

This was the hard part, after registering an account then you are all set. One more thing that I would like to mention is that I am using a free PLAN as I am using the Arduino IoT Cloud for the first time and I am sure you guys may also be using the FREE PLAN. It doesn’t matter if you are using a Free Plan or a Paid Plan the programming and making is exactly the same, the only difference is that with paid plans you can use more things and get more privileges. Anyways, after creating the account, click on the IoT cloud.

Arduino IoT Cloud ESP32

Now we will click on the create thing

Arduino IoT Cloud ESP32

Now, here, first of all, we need to create a variable, so just click on add variable.

Arduino IoT Cloud ESP32

After that, you just need to name the variable, so as we want to make a project for controlling an LED. So we will require only one variable. So let’s just add it. I will name the first variable as led and select the light.

Arduino IoT Cloud ESP32



Now, in the variable permission select the read and write and in variable update policy select the on change and then click on the add variable.

Arduino IoT Cloud ESP32

When we click on the add variable, it will be added to the Variables list along with that you can also see the Last Value and the Last Update. So, our variable name is led and its type is CloudLight.

Arduino IoT Cloud ESP32

After this, we will now need to select a device, now it can be an Arduino board or a third party device like ESP8266, ESP32, etc. But as in the tutorial, I am using the ESP32 Module so I will select the ESP32 Dev Module.

Arduino IoT Cloud ESP32

So Arduino recently started accepting the third-party devices like the ESP8266 and ESP32 as well. So ESP32 is a third-party device, I will select a third-party device here select esp32 and i will select the model as do it ESP32 Dev Module.

Arduino IoT Cloud ESP32

After that click on continue we need to name the device, let’s just name it as electronicclinic special character is not allowed and click on the Next button.

Arduino IoT Cloud ESP32



So after adding your device, it will be creating two credentials we can save, one is the device id and the next is the secret key.

Arduino IoT Cloud ESP32

Now we need to save both parameters, we can say inside our computer because we will be requiring these parameters at the time of coding, so for that, you just need to click on download the pdf and it will automatically download the credentials pdf on your computer. The pdf containing all the data, after that, click on I saved my device id and secret key and click on continue.

Arduino IoT Cloud ESP32

Now with this, we have successfully added a device as well and click on the done.

Arduino IoT Cloud ESP32

Now we need to provide the wi-fi credentials because this is an IoT project and this esp32 board does require internet connectivity.  So just click on this configure button

Arduino IoT Cloud ESP32

Now provide your SSID name, I will provide the SSID name of my wifi router after that I will provide the password of my router and after that here we have to provide the secret key. Now you can get the secret key from this particular pdf file which we just downloaded.  I will simply copy it and paste that in the secret key option and click on the Save button.

Arduino IoT Cloud ESP32



So with this, we have configured our device. Now we will configure the dashboard

Arduino IoT Cloud ESP32

Now, it’s time to create our dashboard.

Arduino IoT Cloud ESP32

Now the dashboard is created with the name untitled now here I will click on the edit icon on the dashboard.

Arduino IoT Cloud ESP32

Now I will click on add, to add different widgets, so here are all the available widgets for our projects. They are kind of limited widgets if we compare them with the Blynk IoT platform but they are all the important widgets. We can say and it will be enough for the majority of our projects.

Arduino IoT Cloud ESP32

So first of all, I will add a switch to control the led. I will name it as led and I will link a variable to this switch.

Arduino IoT Cloud ESP32

 

So we need to define on which variable to send the data of the switch widget so I will select the led here I will click on link variable so the led variable is linked with this button

Arduino IoT Cloud ESP32




After that I will simply click on done so with this we have successfully configured the first widget.

Arduino IoT Cloud ESP32

Now the widget is created.

Arduino IoT Cloud ESP32

Now one interesting feature of the Arduino IoT cloud platform is that you don’t need to create a separate dashboard for mobile application and the web application whatever you create inside the web application it will be reflected directly to your mobile application without doing any changes. So both the dashboard is common dashboards we can say unlike the Blynk IoT platform Blynk offers a web dashboard and mobile dashboard separately so, that’s it we have successfully edited the dashboard.

Arduino IoT Cloud Led Control, Code:

Now, we will write the code to control the led and for this we will click the thing and now click on the sketch option.

Arduino IoT Cloud ESP32

Now, one very great thing about this Arduino IoT cloud platform is you don’t even need to have any software any library to be installed onto your computer. You just need to have a basic computer with internet connectivity and all the things will be done inside this IoT. Arduino IoT cloud platform provides the online Arduino IDE or we can say code editor software with all the libraries already included on it, so this is kind of a plus point for Arduino because we don’t require anything other than a computer with internet connectivity. You will need to download and install the ArduinoCreatAgent.



The variable is already declared which is led by this cloud platform. After that, all the necessary lines are already added

Now we just need to embed the logic for our project. So the onLEDChange function is already created so as soon as the status of the button changes this function will be called. Now here we have to define what we have to do as soon as the button is changed. So I want to turn on and off the led based on the button status. So for that, i will write the command



Complete code:

If the data of the led variable is coming as one means the button is turned on and it will turn on the led.

Now the code is completed and we will click on the compile button

Arduino IoT Cloud ESP32




After successfully compiling the code we will click on the go-to IoT cloud. Now in order to upload the code, we will first install the Arduino agent by click on the learn more

Arduino IoT Cloud ESP32

Now click on the agent download

Arduino IoT Cloud ESP32

After downloading the agent install it on the computer. We will be able to upload the code to the esp32.

Now, if you open the Dashboard, you will be able to control your LED using your computer or you can use a mobile app. Now for the mobile app, you will need to download the IoS or Android supported app designed by Arduino. Open the Playstore on your cell phone and search for the Arduino IoT cloud Remote, install the App, enter your login details, and then you are all set. So, anything that you have created on the dashboard, the same widgets will be added to your mobile dashboard as well, you don’t need to do anything at all. So, that’s all for now and I hope you find this article informative.

 

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About the Author: Engr Fahad

My name is Shahzada Fahad and I am an Electrical Engineer. I have been doing Job in UAE as a site engineer in an Electrical Construction Company. Currently, I am running my own YouTube channel "Electronic Clinic", and managing this Website. My Hobbies are * Watching Movies * Music * Martial Arts * Photography * Travelling * Make Sketches and so on...

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