vtally
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An affordable and reliable Tally Light that works via WiFi based on NodeMCU / ESP8266. Supports multiple video mixers.
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Build and set up a WiFi Tally
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a NodeMcu ESP8266
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<li class="md-nav__item">
<a href="#a-piece-of-rgb-led-strip" class="md-nav__link">
a piece of RGB LED strip
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an USB power source
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Connect the hardware
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Separate Operator and Stage Light
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Prepare the NodeMCU Toolchain
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Flash the firmware
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a piece of RGB LED strip
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an USB power source
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Flash the firmware
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<h1 id="build-and-set-up-a-wifi-tally">Build and set up a WiFi Tally<a class="headerlink" href="#build-and-set-up-a-wifi-tally" title="Permanent link">¶</a></h1>
<p>The WiFi Tally is a piece of hardware that connects to the Hub via WiFi.</p>
<p>You do not need any prior experience with hardware projects as this is really
beginner friendly.</p>
<div class="admonition info">
<p class="admonition-title">Info</p>
<p>Please note that this is the Getting Started Guide, and we follow <em>one</em> opinionated
path here. We don't want to confuse new readers with too many options and alternate paths
to choose from. If you are curious about alternatives, check out details in the
<a href="../tally.html">reference</a>.</p>
</div>
<h2 id="requirements">Requirements<a class="headerlink" href="#requirements" title="Permanent link">¶</a></h2>
<p>You need a few parts to build the WiFi Tally.</p>
<h3 id="a-nodemcu-esp8266">a NodeMcu ESP8266<a class="headerlink" href="#a-nodemcu-esp8266" title="Permanent link">¶</a></h3>
<p>This is an ESP8266 wifi chip on a development board that is typically used for IoT
applications. As it is an Open Hardware project there are lots of different boards
available. They mostly differ in price and form factor and are all fit for the project.
But they all look similar to this:</p>
<p><img alt="Photography of a NodeMCU" src="../images/Nodemcu_amica_bot_02.jpg" /></p>
<p><a href="https://commons.wikimedia.org/wiki/File:Nodemcu_amica_bot_02.png">"NodeMCU Amica"</a>
by "Make Magazin DE", <a href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">CC-BY-SA-4.0</a></p>
<p>!TODO: elaborate on different NodeMCUs!</p>
<h3 id="a-piece-of-rgb-led-strip">a piece of RGB LED strip<a class="headerlink" href="#a-piece-of-rgb-led-strip" title="Permanent link">¶</a></h3>
<p>It needs to be specified for 5V and have a common anode.
Most LED strips that can be separated after <em>every</em> LED and have 4 pins should fulfill that requirement. </p>
<p>I recommend taking one with 120LEDs per meter to not have the LEDS be spaced too much.</p>
<h3 id="an-usb-power-source">an USB power source<a class="headerlink" href="#an-usb-power-source" title="Permanent link">¶</a></h3>
<p>The whole setup draws far less than <code>200mA</code> and can be powered via USB.</p>
<ul>
<li>Some cameras have USB outlets that you can use</li>
<li><code>200mA</code> is little enough that even the smallest power bank can supply the Tally for hours</li>
<li>use any old USB charger</li>
</ul>
<h2 id="connect-the-hardware">Connect the hardware<a class="headerlink" href="#connect-the-hardware" title="Permanent link">¶</a></h2>
<p>All you need to do is connecting the LED strip to the NodeMCU board.</p>
<div class="admonition warning">
<p class="admonition-title">Warning</p>
<p>Do not connect more than 5 LEDs to the board!</p>
<p>This will drain too much current through the board and potentially damaging it.</p>
</div>
<p><img alt="connection of the parts" src="../images/tally-schematics-simple.png" /></p>
<table>
<thead>
<tr>
<th>board PIN</th>
<th>strip PIN</th>
</tr>
</thead>
<tbody>
<tr>
<td>D3</td>
<td>B</td>
</tr>
<tr>
<td>D2</td>
<td>R</td>
</tr>
<tr>
<td>D1</td>
<td>G</td>
</tr>
<tr>
<td>3V3</td>
<td>+ or +5V</td>
</tr>
</tbody>
</table>
<div class="admonition info">
<p class="admonition-title">Info</p>
<p>It is possible to connect the <code>+5V</code> pin of the LED strip to <code>Vin</code> on the board. But not all NodeMCU boards connect
the PIN to the USB power supply and your LEDs would stay dark.</p>
<p>It might also happen that you LED Strip does not work with a lower voltage of the 3.3V output. Typically this does
not happen, but it could if you have an older strips.</p>
</div>
<p>This is how the setup could look like on a breadboard.</p>
<p><img alt="WiFi Tally on a breaboard" src="../images/on-breadboard.jpg" /></p>
<h3 id="separate-operator-and-stage-light">Separate Operator and Stage Light<a class="headerlink" href="#separate-operator-and-stage-light" title="Permanent link">¶</a></h3>
<p>You can connect a second strip to use as an indicator for the speaker on stage.
Connect the first LED as above and direct it in the direction of the camera operator.
Then connect a second strip and let it face to the front of the camera. </p>
<p><img alt="connection of the parts" src="../images/tally-schematics-operator.png" /></p>
<table>
<thead>
<tr>
<th>board PIN</th>
<th>strip PIN</th>
</tr>
</thead>
<tbody>
<tr>
<td>D7</td>
<td>B</td>
</tr>
<tr>
<td>D6</td>
<td>R</td>
</tr>
<tr>
<td>D5</td>
<td>G</td>
</tr>
<tr>
<td>3V3</td>
<td>+ or +5V</td>
</tr>
</tbody>
</table>
<p>This light will only show preview and live states, but not any error states.</p>
<h2 id="prepare-the-nodemcu-toolchain">Prepare the NodeMCU Toolchain<a class="headerlink" href="#prepare-the-nodemcu-toolchain" title="Permanent link">¶</a></h2>
<p>The NodeMCU documentation very nicely explains all the steps necessary to <a href="https://nodemcu.readthedocs.io/en/master/getting-started/#getting-started-aka-nodemcu-quick-start">start a NodeMCU project</a>.
The documentation might seem overwhelming at first, but you only need to care of the two steps</p>
<ul>
<li>Flash Firmware, and</li>
<li>Upload code</li>
</ul>
<p>Depending on your Operating System, you should select one – and only one – <a href="https://nodemcu.readthedocs.io/en/master/getting-started/#task-os-selector">tool for each of these steps from
the table</a>.</p>
<p>So either select <a href="https://nodemcu.readthedocs.io/en/master/getting-started/#nodemcu-pyflasher">NodeMCU PyFlasher</a>
or <a href="https://nodemcu.readthedocs.io/en/master/getting-started/#esptoolpy">esptool.py</a> to flash the firmware
and follow their installation instruction. Similarly select <a href="https://nodemcu.readthedocs.io/en/master/getting-started/#esplorer">ESPlorer</a>
or <a href="https://nodemcu.readthedocs.io/en/master/getting-started/#nodemcu-tool">NodeMCU Tool</a> to upload code and follow
their installation instruction.</p>
<p>Download <a href="https://github.com/wifi-tally/wifi-tally/releases/download/0.5.2/vtally-0.5.2-esp8266.zip">vtally-0.5.2-esp8266.zip</a>
for the latest files for the ESP8266.</p>
<h2 id="flash-the-firmware">Flash the firmware<a class="headerlink" href="#flash-the-firmware" title="Permanent link">¶</a></h2>
<p>When everything is set up flash the firmware with the tool selected in the previous step.</p>
<p>The firmware is the <code>.bin</code> file in <a href="https://github.com/wifi-tally/wifi-tally/releases/download/0.5.2/vtally-0.5.2-esp8266.zip">vtally-0.5.2-esp8266.zip</a>.</p>
<h2 id="upload-code">Upload Code<a class="headerlink" href="#upload-code" title="Permanent link">¶</a></h2>
<p>Use the tool you have selected to upload the following files from
<a href="https://github.com/wifi-tally/wifi-tally/releases/download/0.5.2/vtally-0.5.2-esp8266.zip">vtally-0.5.2-esp8266.zip</a>
to the NodeMCU board:</p>
<ul>
<li>every file ending in <code>.lc</code></li>
<li><code>init.lua</code></li>
<li>the <code>tally-settings.ini</code> described below</li>
</ul>
<div class="admonition info">
<p class="admonition-title">tally-settings.ini</p>
<p>This file configures your Tally. You can copy <code>tally-settings.ini.example</code> over and edit it as needed.</p>
<table>
<thead>
<tr>
<th>setting name</th>
<th>description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>station.ssid</code></td>
<td>The name of the WiFi that the Tally should connect to</td>
</tr>
<tr>
<td><code>station.password</code></td>
<td>The password to connect to the WiFi. If the WiFi has no password, leave it empty.</td>
</tr>
<tr>
<td><code>hub.ip</code></td>
<td>The IP address the hub is running on</td>
</tr>
<tr>
<td><code>tally.name</code></td>
<td>How you want <em>this</em> tally to be labeled in the hub. This name needs to be unique amongst all tallies in your network. It must not be longer than <code>26</code> characters. Use of ASCII characters is recommended.</td>
</tr>
</tbody>
</table>
<p>For a list for all configuration values see <a href="../tally.html">tally-settings.ini Reference</a>.</p>
</div>
<p>Reboot the NodeMCU board by pressing the <code>RST</code> button on the board or disconnecting it from power briefly.</p>
<div class="admonition success">
<p class="admonition-title">Success</p>
<p>If the LED strip starts blinking blue, this means you have correctly connected the hardware, flashed the firmware
and uploaded the code.</p>
<p>After a few seconds it should show up in the Hub. Configure a channel there and the WiFi Tally should follow it.</p>
<p><strong>Well done!</strong> </p>
</div>
<div class="admonition info">
<p class="admonition-title">Info</p>
<p>If you run into problems, the <a href="../troubleshooting.html">Troubleshooting Guide</a> should have you covered.</p>
</div>
<h2 id="conclusion">Conclusion<a class="headerlink" href="#conclusion" title="Permanent link">¶</a></h2>
<p>This concludes the <a href="index.html">Getting Started Guide</a>.</p>
<p>To learn of other options for the Tally Light, see the <a href="../tally.html">reference</a>.</p>
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