Your Smart IOT

<h2 id="introduction">Introduction</h2>
<p>In addition to playing some infrared (IR) Rock-Paper-Scissors, you can use your <a href="http://bit.ly/2mVK4Sd" target="_blank">Roshamglo badge</a> for a number of fun activities, including sending IR commands to your TV (well, almost any TV, really).</p>
<p>A few years ago, <a href="http://bit.ly/2nLzCdy" target="_blank">Mitch Altman</a> designed an ATtiny85-based IR remote, known as <a href="http://bit.ly/2mVKWWL" target="_blank">TV-B-Gone</a><sup>®</sup>, that transmits the power code of popular televisions over the course of about a minute. Since then, several people have contributed to the open source code of TV-B-Gone, including <a href="http://bit.ly/2nLjvwq" target="_blank">Limor Fried</a> and <a href="http://bit.ly/2mVKXKj" target="_blank">Ken Shirriff</a>, who created an <a href="http://bit.ly/2nLrmKw" target="_blank">Arduino port of the program</a>.</p>
<div class="alert alert-info"><b>Note:</b> TV-B-Gone works by transmitting the “Power On/Off” signal in over 100 TV encoding schemes. It works for about 80% of the most popular manufacturers (e.g., Panasonic, Sony, RCA, Toshiba), but there is no support for some newer TV manufacturers (e.g., Insignia, Affinity).</div>
<h3>Required Materials</h3>
<p>You will need a <a href="http://bit.ly/2mVK4Sd" target="_blank">Roshamglo badge</a> and, optionally, a resistor between 47Ω and 1kΩ. We recommend the <a href="http://bit.ly/2mVKY0P" target="_blank">Resistor Kit</a>, as it has several different resistor options to play with.</p>
<h4>Tools</h4>
<p>If you plan to add a resistor to your Roshamglo badge to increase the IR range, you will need a <a href="http://bit.ly/2nLwYEF" target="_blank">soldering iron</a> and <a href="http://bit.ly/2mVJpA7" target="_blank">solder</a>.</p>
<div class="section tutorial-page">
<h2 id="hardware-assembly-optional">Hardware Assembly (Optional)</h2>
<p>In its default state, the Roshamglo badge has an IR transmission range of about 5 feet. This was done by design to prevent people from bouncing signals off other people and interrupting Rock-Paper-Scissors games.</p>
<p>However, 5 feet is a little short for being able to control a TV from across the room. You don’t need to upgrade the hardware, but if you do, you can easily shoot TV beams from 40+ feet away.</p>
<p>First, choose a resistor value you want to use to upgrade your badge’s range. Something between 47Ω (40+ feet range) and 1kΩ (around 10 feet) will work the best. Note that the resistor will be in parallel with the 1.5kΩ resistor that’s already on the board. To help you decide what to choose, here are some common resistor values that should work:</p>
<table class="table table-hover table-striped table-bordered">
<tbody>
<tr>
<th>Resistor</th>
<th>Current Through LED</th>
<th>Predicted Range</th>
</tr>
<tr>
<td>47Ω</td>
<td>37mA</td>
<td>40 feet</td>
</tr>
<tr>
<td>100Ω</td>
<td>18mA</td>
<td>20 feet</td>
</tr>
<tr>
<td>220Ω</td>
<td>9mA</td>
<td>12 feet</td>
</tr>
<tr>
<td>330Ω</td>
<td>6mA</td>
<td>10 feet</td>
</tr>
<tr>
<td>470Ω</td>
<td>5mA</td>
<td>8 feet</td>
</tr>
<tr>
<td>1kΩ</td>
<td>3mA</td>
<td>6 feet</td>
</tr>
<tr>
<td>Open</td>
<td>1mA</td>
<td>5 feet</td>
</tr>
</tbody>
</table>
<div class="alert alert-warning"><b>Note:</b> If you want the maximum range, just use a <b>47Ω resistor</b>. You could get away with a smaller resistor, and therefore more current, but keep in mind the IR <a href="http://bit.ly/1WT6RcH" itemprop="url" target="_bank" title="LED"><strong>LED</strong></a> is rated for a maximum of 70mA. Things could get hot.</div>
<p>In the corner of the Roshamglo board, by the USB connector, you will see two holes situated diagonally toward the center of the board with the label <code>R_Ext</code>.</p>
<p><a href="http://bit.ly/2mVKYhl" target="_blank"><img alt="Resistor holes on Roshamglo" src="http://bit.ly/2nLnc5v" /></a></p>
<p>Solder your chosen resistor into those holes. We recommend bending the resistor’s leads so that the resistor folds nicely onto the board and does not touch other components.</p>
<p><a href="http://bit.ly/2mVB9ju" target="_blank"><img alt="Extra resistor added to Roshamglo" src="http://bit.ly/2nLAwGV" /></a></p>
<p><em>Resistor bent between components</em></p>
</div>
<div class="section tutorial-page">
<h2 id="programming">Programming</h2>
<p>Before we load the TV-B-Gone code onto the Roshamglo badge, we’ll need to install Arduino and the Roshamglo board definitions. Follow the instructions in the tutorial below to make sure you can send new programs to your Roshamglo board.</p>
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<p><a href="http://bit.ly/2mVNwwd" target="_blank"><span class="new">New!</span></a></p>
<h3 class="title">Hack Your Roshamglo Badge</h3>
<h4 class="metaline">MARCH 12, 2017</h4>
<div class="description">Learn how to customize and program your Roshamglo badge.</div>
</div>
</div>
<div class="clearfix"></div>
<div class="alert alert-info"><b>Note:</b> We are using a version of the TV-B-Gone software that has been modified to work on Roshamglo. A few of the TV codes have been removed in order to make it fit into the 6k of program memory available on the badge’s microcontroller.</div>
<p>Download the <a href="http://bit.ly/2nLGGGS" target="_blank">Roshamglo Project Repository</a> as a .zip file:</p>
<p><a class="btn btn-default" href="http://bit.ly/2mVFIKM" target="_blank">DOWNLOAD THE ROSHAMGLO PROJECT</a></p>
<p>Unzip it. Open the Arduino IDE and select <strong>File > Open</strong>. Navigate to <strong><Roshamglo Project Directory>/Firmware/Examples/Roshamglo-TV-B-Gone</strong>. Open the <strong>Roshamglo-TV-B-Gone.ino</strong> file.</p>
<p><a href="http://bit.ly/2nLmeWS" target="_blank"><img alt="Roshamglo TV-B-Gone Arduino code" src="http://bit.ly/2nLmeWS" /></a></p>
<p>By default, the Roshamglo-TV-B-Gone code supports North American IR codes. To change them to support European Union codes, click on the <strong>main.h</strong> tab and change</p>
<div class="copy-code" data-code-id="code-0"><button class="btn btn-default btn-sm">COPY CODE</button></div>
<pre data-language="language:c ,c">
<code class="rainbow"><span class="comment">#define REGION NA</span>
</code>
</pre>
<p>to</p>
<div class="copy-code" data-code-id="code-1"><button class="btn btn-default btn-sm">COPY CODE</button></div>
<pre data-language="language:c ,c">
<code class="rainbow"><span class="comment">#define REGION EU</span>
</code>
</pre>
<p><a href="http://bit.ly/2mVw3Um" target="_blank"><img alt="Changing TV-B-Gone to support European Union IR codes" src="http://bit.ly/2mVw3Um" /></a></p>
<p>Select <strong>Tools > Board > Roshamglo</strong>.</p>
<p><a href="http://bit.ly/2nLkyNc" target="_blank"><img alt="Programming Roshamglo badge with TV-B-Gone firmware" src="http://bit.ly/2mVItf2" /></a></p>
<p>Click the <strong>Upload</strong> button.</p>
<p><a href="http://bit.ly/2nLjtoi" target="_blank"><img alt="Uploading the firmware from Arduino" src="http://bit.ly/2nLjtoi" /></a></p>
<p>Wait for <strong>Uploading</strong> to appear at the bottom of the Arduino window.</p>
<p><a href="http://bit.ly/2mVInEb" target="_blank"><img alt="Waiting for Roshamglo badge in Arduino" src="http://bit.ly/2mVInEb" /></a></p>
<p>At this point, make sure your Roshamglo badge is <strong>OFF</strong>, and press and hold the <strong>Down</strong> button on the Roshamglo badge (hold the five-way switch toward the <em>SparkFun</em> logo). While holding the <strong>Down</strong> button, insert the badge into an available USB slot on your computer.</p>
<p><a href="http://bit.ly/2nLmcOK" target="_blank"><img alt="Putting Roshamglo into bootloader mode" src="http://bit.ly/2mVzWcf" /></a></p>
<p>The program should be uploaded from Arduino. You should see a <em>Done Uploading</em> message appear.</p>
<p><a href="http://bit.ly/2nLDyuP" target="_blank"><img alt="Finished uploading TV-B-Gone firmware to Roshamglo from Arduino" src="http://bit.ly/2nLDyuP" /></a></p>
<div class="alert alert-info"><b>Note:</b> If you get an error message while uploading, it could be caused by a variety of reasons. The way we’re uploading programs to Roshamglo is actually hacked together, as we’re <a href="http://bit.ly/2mVA1MV" target="_blank">emulating USB</a> on the badge, which many computers do not like. Here are some things to try if you do get an error:
<ul>
<li>Try a different USB port</li>
<li>Unplug other USB devices</li>
<li>Close other programs that might be running</li>
<li>Reinstall the <a href="http://bit.ly/2nLkwF4" target="_blank">Roshamglo USB driver</a></li>
<li>Try a different computer</li>
</ul>
</div>
</div>
<div class="section tutorial-page">
<h2 id="try-it-out">Try It Out</h2>
<p>Turn on your Roshamglo badge. If North American IR codes were chosen (default), the green <a href="http://bit.ly/1UhB2tm" itemprop="url" target="_bank" title="LED"><strong>LED</strong></a> will blink three times. If EU codes were chosen, the green LED will blink six times.</p>
<p>Find a nearby TV, aim the USB connector toward it and press down on the center button of the five-way switch. The green LED should begin to flash intermittently, which indicates that the IR codes are being sent. You can let go of the button at this point; the codes will continue to be sent. Note that it could take up to 72 seconds for all the codes to be transmitted; keep pointing the badge at your target.</p>
<p><a href="http://bit.ly/2nLgFI2" target="_blank"><img alt="Turn off a TV with your Roshamglo badge" src="http://bit.ly/2mVIEqF" /></a></p>
<p>With any luck, the TV should turn off (or perhaps on, as the IR codes for on and off are the same for many TVs).</p>
<div class="alert alert-info"><b>Note:</b> The beam width on Roshamglo’s IR LED is fairly narrow. You may have to point it directly at the TV’s IR receiver.</div>
<p>If you would like to cancel the 72 seconds of code transmission, you can either press the <em>RESET</em> button or turn the badge off using the side switch.</p>
</div>
<div class="section tutorial-page">
<h2 id="resources-and-going-further">Resources and Going Further</h2>
<p>This is just one example of something fun you can do with Roshamglo. For more information, check out the resources below:</p>
<ul>
<li><a href="http://bit.ly/2nLAuyN" target="_blank">Roshamglo Schematic PDF</a></li>
<li><a href="http://bit.ly/2mVFIKM" target="_blank">Eagle Design Files</a></li>
<li><a href="http://bit.ly/2mVEiQm" target="_blank">Roshamglo Source Code</a></li>
<li><a href="http://bit.ly/2nLGGGS" target="_blank">Roshamglo GitHub Repository</a></li>
</ul>
</div>
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Roshamglo Project: TV-B-Gone

Introduction In addition to playing some infrared (IR) Rock-Paper-Scissors, you can use your Roshamglo badge for a number of fun activitie...

Roshamglo Project: TV-B-Gone

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