Picture of Basic Arduino Tutorials : 01 Blinking LED
In this instructable, I'm going to show you how to make a simple circuit/code with an arduino, which will make an LED connected to it flash from off to on, with 1-second intervals, as shown below. 
This is a very easy, basic idea, however it leads to many more complicated codes and circuits.

Step 1: What you will need

Picture of What you will need
1 x LED
3 x Cables
1 x 330 Ω Resistor
1 x Arduino board (it can be any kind, but for this instructable i used the UNO board).
1 x USB cable
1 x Computer with Arduino software installed (http://www.arduino.cc/en/Main/software if you haven't already got it)
1 x Breadboard

Breadboard/Circuit-board Holder.
captainmo69 made it!21 days ago
thanks for the tutorial. it was my first.
MikeB332 months ago

How would that work with the nano on the breadboard? I know that the Nan gets its power from the USB but what about all the plugs that the Nano is sitting in on the breadboard? I assume they are dead?

angela.villareal made it!5 months ago

I'm a 27 years old girl, look what I did! It's never too late to learn anything! Your tutorial was great!

ChristopherZ10 months ago


I'm just starting out with an Arduino and I did this project, but can't figure something out.

It seemed to me that the positive from the 5v to the breadboard doesn't really go anywhere, and I confirmed this by removing it. The LED still blinks. I'm assuming the circuit is completed by the jumper to the digital pin 0.

So, why the 5v jumper to the breadboard?

Lochlan11 months ago

Hi, where did you buy that bread board from?

Here is a super easy Arduino breadboard:


Great tutorial!!
I'm new to all this stuff and before I jump into programming the Arduino I'd like to start by learning a little with analog circuits.

Can I use the Arduino purely as a power supply for my breadboard?

hnvasa1 year ago

Hello, these are some of the great tutorials on starting with Arduino...
I have some other tutorials on Arduino that might be helpful:


brandegor3 years ago
Perfect for me and I'm so danged glad you posted this. If you have time, keep going! This is incredibly helpful. Thanks again!
Phil B3 years ago
I know there are a lot of Instructables on Arduino, but most of them begin beyond a beginner level. Arduino is very new and unfamiliar to me. I appreciate your very basic approach for a "newbie." I look forward to anything like a step-by-step tutorial for someone not currently involved with Arduino. Right now my questions involve, "What is it?" and "Why would I want to use it?" If I were to use Arduino, I would want it to do some useful and necessary task best done by it. I would not be interested in "cool" for the sake of "cool." Thanks.
fergal (author)  Phil B3 years ago
That was my original idea, because when I started using Arduino, I couldn't find any tutorials on basic ideas, and I got very unnerved, So i made this tutorial for beginners, and am looking at making more. Thanks for the feedback!