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Sometimes, you may feel the need to define your own custom header files, for organizing your code better. Say you want to create a global_variables.h file for storing all your global variables.You can create the file within Arduino IDE by clicking on the bottom arrow at the top right of the screen, and selecting 'New Tab'. (Alternatively, you can press Ctrl+Shift+N on your keyboard)Name your file in the prompt and press OK.The new file gets created, and can be found in your Sketch folder.In order to include this file in your main .ino code, you can simply add the following ... Read More
Sometimes, you are just curious to know where the source files of Arduino are hidden. In other words, from where does Arduino know what to do when you write Serial.print(). Or where are the source codes of various libraries like SPI or Wire are stored.The Arduino Source Code files can be accessed by going to the directory containing your Arduino Software. On Windows, you can type Arduino in the start, right-click on Arduino and click on 'Open File Location'. If this opens a shortcut icon, you can right-click on the shortcut icon and again click on 'Open File Location'.This will ... Read More
To see inbuilt examples in Arduino IDE, follow the steps given below −Step 1: Go to File.Step 2: Click Examples from the dropdown menu.Step 3: Select the relevant example from the category of your interest.If you add separate boards like ESP32 to your Arduino IDE, you can also see examples specific to that board, if you've selected that board from Tools -> Board
The Serial Plotter is available in Arduino Versions 1.6.6 and above. It is a handy tool for visualizing rapid incoming data, say from a sensor. With Serial Monitor, you may not be able to register the changes in the data, especially if the data is changing too quickly. Serial Plotter will visually show you the changes. What's more, the Serial Plotter can also plot multiple values at a time. I think an example will best explain this.Have a look at the code below. We are generating random numbers, but these could very well be readings from Analog or digital sensors.Examplevoid ... Read More
In order to view Serial output (basically see whatever is printed by the device using Serial.print() or its variants), you can use the Serial Monitor built into the Arduino IDE.First connect the board to the Arduino IDE. This should show a new COM port in Tools -> PortIn case you see multiple Serial Ports, it will be a good idea to disconnect your board and see which port disappears. That way, you can identify the port corresponding to your board. Once you have selected the correct Port, click on Tools -> Serial Monitor or press Ctrl + Shift + M ... Read More
In order to download a new library, go to Tools -> Manage LibrariesSearch for the library of your interest in the window that opens up. Click on the desired library, and click Install.This will Install the library and you will be able to see the example specific to the library from File -> Examples.
To add a new board in Arduino IDE, go to Tools -> Board -> Boards ManagerIn the window that opens up, search for the board of your interest, click on that board, and click on the 'Install' button. You can even choose to install an earlier version of the board from the versions dropdown (1.1.6 in the image below).Some boards are not directly searchable in the Arduino Boards Manager. Popular examples are ESP32 and ESP8266. In order to install the ESP32 and ESP8266 board in Arduino, the following steps can work (other non-available boards may have similar steps).Step 1: Get ... Read More
Formatting the code is quite important to make it readable. It is recommended that you properly format the code regularly, and especially before sharing it with someone else.Follow these steps to auto-format code in Arduino IDE −Go to ToolsClick on Auto FormatAlternatively, you can press Ctrl+T on your keyboard. This will format the code and add the correct indentations wherever required.Before Auto-FormatAfter Auto-Format
In order to change the baud rate of the Serial Monitor, go to Tools -> Serial Monitor (or press Ctrl+Shift+M alternatively).Make sure you have a board connected to your PC/Laptop, or the Serial Monitor won't open. Also, make sure that the Port corresponds to the connected board.Once the Serial Monitor is open, you can see the baud rate dropdown at the bottom and select the required baud rate from there.
In this post, we will understand the difference between Applet and Application.ApplicationThey are similar to Java programs.They can be executed independently without using web browser.It requires a ’main’ function for it to be executed.Java applications have full access to local file system and network.They can access all kinds of resources that are available to the system.They can execute the programs with the help of the local system.An application program is required when a task needs to be directly performed for the user.AppletsThey are small Java programs.They have been designed to be included with HTML documents.They need Java enabled web browser ... Read More