Difference between revisions of "Arduino/C4/Arduino-on-Cloud/English"

Learning Objectives

• Arduino on Cloud interface
• How to create circuit connection and
• Simulate to see the output

Pre-Requisites

• Arduino and
• Electronic components

If not, then go through the relevant Arduino spoken tutorials on this website.

System Requirement

• Ubuntu Linux 18.04 OS
• Chrome web browser

• Open the web browser on your computer and go to this link.
• Note that an internet connection is required for the entire process.

On the left hand side there is a video on how to use arduino on cloud.

Please watch it and understand the various features available on Arduino on cloud.

click and show the document about the experiment

It takes you to a home page of arduino on cloud.

Click on the three bars on the top left corner to see a list of experiments which are given for you to practice.

This experiment shows how to control the rotation of a servo motor using potentiometer.

The details required for the experiment are given in this page.

Refer the circuit diagram and source code while practising.

Expand and show the input and output

The components required to create the circuit are available on the left panel.

We need a breadboard, arduino uno, servo motor and potentiometer for this experiment.

Now let us drag and drop the required components.

Drag and drop breadboard

Select the Breadboard. Drag and drop it in the working space as shown.

Arrange the breadboard and Arduino side by side as shown here.

Use the Plus or Minus icons in the toolbar to zoom in or zoom out as shown.

click on the servo motor.

click on view info.

Scroll down to show the information

Click on ok

If you want to know more about any component, click on the component.

A pop-up window appears on the top right corner.

Now click on the View Info button.

The new window will give you some basic information about the particular component.

Click on OK to close this window.

Make sure the legs of the potentiometer are attached to the points of the breadboard.

The breadboard point turning red indicates the connection is established.

We have selected all the components required for this experiment.

drag and make the +ve connection

drag and make the GND connection

All the holes in the same row are internally connected.

So you can use any of the holes in the same row for connection.

We will create a +5v source rail on the breadboard.

Select a box in the positive rail of the breadboard as shown.

Then connect it to the +5V pin on the Arduino Uno.

Likewise, select a box in the negative rail and connect it to the ground (GND) pin of the Arduino Uno.

Let us change the colour of the wire connected between +5V and the breadboard to Red.

From the drop down box, select the red colour.

From the drop down box, select the red colour.

Now we will extend the +5V and Ground rails of both top and bottom of the breadboard as shown.

This will help us to make the other component connection simple.

change the color to green

Connect the left terminal of the potentiometer to the 5V

Now we will connect the potentiometer to the Arduino Uno.

Connect the center pin of the potentiometer to the Pin A0 of the Arduino Uno.

Let us change the colour of the wire connected to Pin A0 of Arduino to green.

Connect the left terminal of the potentiometer to the 5V rail on the breadboard. Change the wire to red.

Let us keep the black colour of the GND pin to the breadboard as it is.

Connect the power pin of the Servo Motor to +5v rail of the breadboard.

Connect the GND pin of the Servo Motor to the GND rail of the breadboard.

change the color of the wire.

Connect the power pin of the Servo Motor to +5v rail of the breadboard.

Connect the GND pin of the Servo Motor to the GND rail of the breadboard.

Change the color of the wire as shown for easy identification.

Click on Dashboard

Click on Temporary circuits

For this, click on the Save Temporary icon on the top toolbar.

It will save in the browser cache.

Note that if you clear the browser cache, all the saved circuits will be lost.

To view the saved circuits, in the menu bar click on Dashboard.

Click on the save button and then on the save temporary button.

Then click on Temporary Circuits in the left pane.

We can see the saved circuit.

To open the saved circuit, click on it.

In the pop-up window, click on the Edit circuit button.

On the toolbar, click on the Auto-Arrange Wires icon which re-arranges the wires .

It will take some time to see the re-arrangement of wires.

Write the necessary code in the void setup() and void loop() as shown.

Let us copy and paste the required code in the document.

Click on the play icon Start Simulation on the toolbar.

The compilation text message in green color shows that the code is correct without any errors.

Show both rotation with potentiometer

When the value is at the minimum, note that the shaft of the servo motor is at the minimum angle.

When we increase the potentiometer value, the shaft of the servo motor starts to rotate.

Likewise, you can rotate the potentiometer in anticlockwise, and the servo motor reverses its rotation.

Thus we can observe that the servo motor rotates as per the rotation of the potentiometer.

Press the simulation button again to stop the simulation.

Highlight while recording

Let us change the capital ‘S’ to a small letter ‘s’ and see what happens.

Note that in the entire rest of the code, we have used capital 'S' in myServo .

Click on Start Simulationiconon the toolbar.

Correct the code and compile

Show the action -change the code, simulate, point to serial monitor

It indicates that there is an error in the code. This is a case sensitive error.

Note that Arduino codes are case sensitive.

We have to correct the code and compile it again as shown.

Select the ground wire connection and right click and select delete.

Otherwise, press the delete button to delete the ground connection.

Now let us check the output.

The code will compile properly and it will show there are no errors.

Let us check the rotation of the servo motor.

Hence you have to cross check all the required pins are connected correctly in the circuit.

Type servo motor

Click on the Download Project button.

save the file in downloads folder

Let us give Servo_motor as the filename to save.

Click on the Download Project button.

Select the path where you want to save the JSON file and click on the save button.

Click on the Import JSON file icon.

Select the Servo_motor.json file which we saved earlier and click on the open button.

We can see the circuit has been imported. Click on the 'Code' icon.

Even the code has been imported successfully.

Click on the Start Simulation button and verify the rotation of Servo motor using the potentiometer.

We can see the imported JSON file is also working properly as expected.

Let us summarize.

summary

• Arduino on Cloud interface
• How to create circuit connection and
• Simulate to see the output

About Spoken Tutorial project

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