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

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.
<p>Hey,</p><p>I am using Arduino with RTC to operate the lights of my home.</p><p>I want at 10 PM all my lights should OFF and at 6 AM same should be ON.</p><p>I have completed everything but only unable to tell Arduino to read time from RTC to operate lights.</p><p>Can it be done by reading Arduino Serial Monitor? If yes, then HOW.</p><p>Also the other possible method to do same through Arduino.</p><p>Thanks.</p>
<p>There is no need to use the positive power rail for 5v from the arduino since you are just using the power from the digital pin.</p>
What is the code
<p>nice easy tutorial and a great intro to arduino for someone who has never used it before. As someone points out below, you don't need a wire going from 5v to the bread board. Also the directions say you should use at least a 330ohm resistor but I used 220ohm based on this article from ararduino: https://www.arduino.cc/en/Tutorial/Blink</p>
<p>Hi,</p><p>I'm just starting out with an Arduino and I did this project, but can't figure something out.</p><p>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.</p><p>So, why the 5v jumper to the breadboard?</p>
<p>You most certainly do not need a wire running from the 5v to the breadboard. The voltage you need is coming out of the digital I/O pin. </p>
<p>Very Nice Learning</p>
thanks for the tutorial. it was my first.
<p>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?</p>
<p>I'm a 27 years old girl, look what I did! It's never too late to learn anything! Your tutorial was great! </p>
<p>Hi, where did you buy that bread board from?</p>
<p>Here is a super easy Arduino breadboard:</p><p>http://www.dcoptimum.com/arduino-beadboard-schematic/ </p>
<p>Great tutorial!!<br>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.</p><p><br>Can I use the Arduino purely as a power supply for my breadboard?</p>
<p>Hello, these are some of the great tutorials on starting with Arduino...<br>I have some other tutorials on Arduino that might be helpful:<br><br><a href="http://www.zseries.in/embedded%20lab/arduino/" rel="nofollow">http://www.zseries.in/embedded%20lab/arduino/</a></p>
Perfect for me and I'm so danged glad you posted this. If you have time, keep going! This is incredibly helpful. Thanks again!
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 &quot;newbie.&quot; I look forward to anything like a step-by-step tutorial for someone not currently involved with Arduino. Right now my questions involve, &quot;What is it?&quot; and &quot;Why would I want to use it?&quot; 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 &quot;cool&quot; for the sake of &quot;cool.&quot; Thanks.
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!

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