Getting started with arduino uno for led blinking

Saturday, May 16, 2020

Getting started with arduino uno for led blinking

What is Arduino Uno?


The Arduino Uno is an electronic board that has the ATMEGA 328P microcontroller. It has analog and digital input/output pins. We use it in simple projects, e.g. led lights and also complicated robotics projects. 

Let's get started with Arduino to run our first program. As we use it with different machines e, g. windows, apple, Ubuntu, mobile, etc. as usual Arduino programming is difficult for newbies, but if you get in touch with this Arduino tutorial, it could be helpful.

Getting started with Arduino


Here, I will discuss especially for the windows operating system and also a little another operating system. First, I discuss how to interface with the Windows operating system.


Requirements for Arduino setup

  • Arduino Uno         Amazon
  • USB Cable A-B male (usually used for printers)  Amazon
  • Laptop/Desktop with Windows 7, 8, 10
  • The IDE Software
  • Led (can choose any color)   Amazon
  • Resistance (value of 230 Ω) Amazon 

Setup Arduino ide


Get the latest version from the Arduino cc en main software and Install it on your system. Aintegrated development environment (IDE) can work on Windows, Linux (both 32 and 64 bits), and Mac.

Let's start after Downloading the software IDE and installation at your system. The icon will show on the desktop. Now just plug in a USB terminal with the standard B USB cable and status led will light up on the board.

We use the USB cable to communicate between the board and the computer. To upload the program, the Arduino board. We use it for a power supply purpose.

get started with Arduino

how to connect Arduino to computer


Now, you need to check driver availability at your system. For that, please follow these steps and go to My Computer → Properties → Device Manager, a pop-up window will be open, as shown 

get started with arduino

Highlighted in the picture. If you found a USB-serial device under Port (COM & LPT) then ok else check in Other devices and found unknown devices. Right-click to update the driver or need to check the USB Serial port IC chip at your UNO board.

Mostly Windows XP, Vista, 7, or 10 will auto-detect drivers. For the communication, some boards used the Atmega16/FTDI 232 chip/CH 340 chip. In my case, it was CH340 and automatically detected.

MAC OS X Installation

Download the latest disk image (DMG) file for the IDE Environment. Open the .DMG file by dragging the icon over to the Applications folder. Also, for installation at Linux (both 32 and 64 bits), and Mac OS X can check the link http://arduino.cc/en/Main software from the official website.

Arduino Programming

After it does a successful installation, open the development environment to start your first program. When you open the integrated development environment (IDE), it will similar to the figure as shown below.

get started with arduino

Some buttons are inside the menu bar, it's important to understand first the functions 

New  -  It starts a new program/Writes a new code.
Open -  By this option, you can open the existing program.
Save  -  It will save the program.
Verify-  To verify before, upload the program/Compiling the code (Some time found we could correct an error issue)

Upload-It uploads the program to the chip.

Led blink code to Arduino


Start your first program blinking, led by File → Example → 01. Basics → Blink will launch a blinking led program.

get started with arduino

Arduino Board Selection in Ide

Now you need to go to the tool menu. Then select your board in the drop-down list. If you are using another board, e.g. Nano, Mega, or Uno. In my case, I select the Arduino Uno.  

get started with arduino

Arduino Port

After that, once again in the tool menu and select port, and it will show on the bottom side along with COM Port as in fig. In my case, it is COM7.


get started with arduino

Upload the First Led blink Program

Before uploading the program, we should verify it by compiling it. Then upload the first led blinking program.

You will see after a few seconds Led near pin # 13 will blink if every step is as per instruction, 
Congratulations ! and now arrange the led circuit at the board. Between negative supply and Led pin, put 230-ohm resistance in series.


get started with arduino


You can change led blinking time to change the code, I define the 
delay time as

(1000); 1000 = 01 Second 

You can change ON/OFF time by changing the value. There are a lot of examples of led-related projects in the Ide environment.

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