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INSTALLATION
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Arduino IDE
===========
- **Free and Open-source**
- **Easy-to-use**
- **Compatible** 
- **Easy-to-understand**
- **Reliable**

Download
========
- To download the Arduino IDE, open url `<https://www.arduino.cc/en/Main/Software>`_.
- Now select the download file based on your operating system.
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Installation (Windows)
======================
- Now click on the downloaded file to start the installation.
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- Now accept the license agreement by clicking on I Agree button.
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- Click on Next to install various components of Arduino IDE Setup.
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- Now select the directory for installation and click Install button. 
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- The following dialogue box appears, click Close after the installation is completed.
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- If the drivers are not pre-installed on your desktop, then a series of driver installation dialog box will appear. Click Install to install the necessary drivers.
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- The installation has been completed. 
- Now click on the desktop icon to start the Arduino IDE.
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Installation (Linux)
====================
- Extract the downloaded package. 
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- In the extracted folder, find the install.sh file.
- Right click on it and chose the Run in Terminal from contextual menu.
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- If you can’t find the Run in Terminal option from contextual menu, then open Terminal and navigate to the extracted folder
- Type the command ./install.sh and wait for the process to finish
- Now, the Arduino IDE has been installed
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- It might be the case that you would not be able to upload the sketch because of serial port permission. The corresponding error message is **”Error connecting to Serial Port”**
- To set the permission, open Terminal and type ** ls -l /dev/ttyACM* **
- The data we need is ‘dialout’(this is the group owner of the file)
- Now we need to add our user to that group with the help of the following command  **“sudo usermod -a -G dialout <username>”**
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Installation (Mac OS X)
=======================
- Extract the downloaded package. 
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- Copy the Arduino application into the Applications folder or any other location. 
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- The installation has been completed. 
- Now click on the Arduino icon to start the Arduino IDE.
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User Interface
==============
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File Tab and Edit Tab
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Sketch Tab and Tools Tab
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Meaning of Symbols-Verify
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Upload
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New
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Open
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Save
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Serial Monitor
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Functions
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