Have you ever wanted to use a good old knob to control your TV volume instead of repeated button pushing? Or make it controlled by light? Do you want your remote to be replaced by an awesome arduino and let it do the hard work of using a remote for you? Well this instructable is for you!

Also if you just want to learn how to use IR to control your TV with your arduino this will help you gain some understanding. Or maybe inspire some awesome project and instructable ideas!

In this instructable we will be using a 10k potentiometer, IR LED, and an Arduino to control the volume (or anything else you want) on a TV.

Here is a materials list

NOTE: "*" means optional

Arduino (or clone, but the arduino Leonardo has not worked for me)

10k potentiometer

IR LED http://www.radioshack.com/product/index.jsp?productId=2062565

100 ohm resistor 

IR receiver http://www.radioshack.com/product/index.jsp?productId=2049727

*NPN transistor and 1k resistor (if you want to amplify power to IR LED)


*regular LED and 470 ohm resistor

You will also need to download the IRremote library from this site:


and make shure to make it arduino 1.0/1.0.1 compatible by changing

in IRRemoteInt.h.

Now Lets Begin!

Step 1: Get the IR Remote Library, Learn About It, and Get Some Remote Codes.

To get the really handy IR remote library that Ken Shirriff made
go to http://www.arcfn.com/2009/08/multi-protocol-infrared-remote-library.html 
and download and install the library

make sure to change

#include <WProgram.h>
#include <Arduino.h>
in IRRemoteInt.h. (to open IRRemoteInt.h and edit it, use Notepad on Windows, or Text Editor on Mac, but don't open with arduino IDE because it won't open with it.)

to make it arduino 1.0/1.0.1 compatable

On the page make sure to read about how to use the library and find the correct protocol for your device

check out the sending example and test it to make sure it works on your arduino

NOTE: picture 1 shows the sending code, and picture 2 shows the hardware setup for it.

then do the receiving test on your arduino to find out your remote hexadecimal codes by pointing your remote at the receiver and pressing the buttons you want the codes for, the see the codes in the Serial monitor.

make sure to write down the codes or store them somewhere for future use.

NOTE: picture 3 shows the receiving code, and picture 4 shows the hardware setup for the receiving code.

If you get all these to work then you are set to continue!

<p>my led broke off my tv remote I cannot change the picture size, have time Warner remote.will not change pic size,, using air TV only.pic size on time Warner works through cable box . advice ideas ? TOM</p>
I too have had issues getting the IRremote library working on an Arduino Leonardo or clone.. I was glad to find you had issues too and that i'm not crazy. It led me to look further and find that Leonard has a timer4 which operates on pin13. The library supports this and it now works for me. <br>thanks! <br>--matt <br>via http://arduino.cc/forum/index.php?topic=115033.0
Great job! I am looking forward to seeing more of your inventions and instructibles!
Nice first Instructable!
Thanks! <br />

About This Instructable




Bio: I am a Inventive guy who loves to make things better than they are if I can, and save anything that can be used. I ... More »
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