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<h1>JMRI: WiFi Connected Throttle</h1>
The WiThrottle window controls the connection between WiFi throttles, e.g. an iPhone, iPod
Touch, or Android Phone, and JMRI.
<p>It can be set to start automatically with the "<a href="../../../apps/TabbedPreferences.shtml#Startup">Start
Up</a>" section in the "<a href="../../../apps/TabbedPreferences.shtml">JMRI Preferences</a>".</p>
<p><a href="../../../apps/TabbedPreferences.shtml#WiThrottle">Preferences</a> for the WiFi
throttles can be found in the JMRI Preferences under the heading WiThrottle.</p>
<p>This utility broadcasts its connection information across all local networks, so it can be
picked up by any device looking for the service. This eliminates having to enter connection
information into the device. If the computer running JMRI is protected by a software
firewall, you may need to add an exception for JMRI or disable the firewall to allow the WiFi
throttle to connect.</p>
<p>When using a WiFi throttle, if the computer enters sleep mode, control will be lost.
System preferences may need to be adjusted to prevent the computer from putting itself to
sleep when it is inactive.</p>
<p>You can use any of these devices via the same or a different (remote) network than the one
that your JMRI computer is running on. See <a href="#remote">below</a> for more information
on <a href="#remote">remote use of mobile devices</a>.</p>
<p>The <a href="Protocol.shtml">WiThrottle protocol</a> is described on a <a href="Protocol.shtml">separate
page</a>. For more on JMRI networking, see the <a
href="../../../../html/doc/Technical/Networking.shtml">networking technical page</a>.</p>
<h3>Available Apps</h3>
<table class="data" style="max-width: 1200px; float: left;">
<tr>
<th>Name</th>
<th>Description</th>
<th>Apple</th>
<th>Android</th>
<th>Windows</th>
<th>Web</th>
</tr>
<tr>
<td>
<a target="_blank" href="https://withrottle.com">WiThrottle</a>
</td>
<td>An easy-to-use interface to allow iPhone, iPad, and iPod touch users to link to JMRI
roster and tables and also web pages. Will download function key labels stored in JMRI.
Available in a free version (control a single locomotive) and a purchased version
(control up to four locomotives at once).</td>
<td>
<a target="_blank" href="https://withrottle.com"><img src="images/WiT125x250.png" height="125"
alt="WiThrottle for Apple devices" title="WiThrottle for Apple devices"></a>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<a target="_blank" href="https://enginedriver.mstevetodd.com">EngineDriver</a>
</td>
<td>This free application can control your locomotives and your entire model railroad.
Speed, direction, and up to 29 DCC functions are supported for one to six locomotives or
consists. You can create and edit consists (software-defined). You can also control
layout power, turnouts, routes, and access JMRI web panels and windows.</td>
<td>
</td>
<td>
<a target="_blank" href="https://enginedriver.mstevetodd.com"><img src="images/EngineDriverScreen.png"
height="125" alt="EngineDriver for Android devices" title="EngineDriver for Android devices"></a>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<a target="_blank" href="https://digitrainspro.hu">DigiTrainsPro</a>
</td>
<td>NOTE: THIS WIFI THROTTLE DOES NOT USE JMRI's WiThrottle server, but rather
communicates via JMRI's Web Server. YOU MUST START Web Server before using this app. You
can then select the locomotive you want to control from the JMRI roster and other objects
such as turnouts from JMRI tables. You can also use its builtin Dispatcher game and play
station speaker announcements. With the Model Time function, trains can run on
schedule!</td>
<td>
<a target="_blank" href="https://digitrainspro.hu"><img src="images/DigiTrainsPro_screenshot.png"
height="125" alt="DigiTrainsPro for Apple devices" title="DigiTrainsPro for Apple devices"></a>
</td>
<td>
<a target="_blank" href="https://digitrainspro.hu"><img src="images/DigiTrainsPro_screenshot.png"
height="125" alt="DigiTrainsPro for Android devices" title="DigiTrainsPro for Android devices"></a>
</td>
<td>
<a target="_blank" href="https://digitrainspro.hu"><img src="images/DigiTrainsPro_screenshot.png"
height="125" alt="DigiTrainsPro for Windows" title="DigiTrainsPro for Windows"></a>
</td>
<td>
</td>
</tr>
<tr>
<td>
<a target="_blank" href="https://www.microsoft.com/en-us/p/train-throttle/9nblggh4vf5j">Train Throttle</a>
</td>
<td>Train Throttle is a client for the JMRI WiThrottle server, which allows you to
control your DCC equipped model trains. The current version of the software lets you
control a single throttle, functions 0-28, as well as add multiple engines to the
throttle, on the fly.</td>
<td>
</td>
<td>
</td>
<td>
<a target="_blank" href="https://www.microsoft.com/en-us/p/train-throttle/9nblggh4vf5j"><img
src="images/TrainThrottleLogo.png" height="100" alt="Train Throttle App for Windows devices"
title="Train Throttle App for Windows devices"></a>
</td>
<td>
</td>
</tr>
<tr>
<td>
<a target="_blank" href="https://signalcab.com">Signal Cab</a>
</td>
<td>A modern WiThrottle-compatible DCC controller for iPhone. Features a swipeable
multi-throttle for controlling multiple locomotives simultaneously, full roster management
with photos and custom function labels (F0&ndash;F28), consist control, tactile haptic
feedback, Siri &amp; App Shortcuts support, automatic command station discovery,
and auto-reconnect. Currently in beta via TestFlight.</td>
<td>
<a target="_blank" href="https://signalcab.com"><img src="images/SignalCab_screenshot.png" height="125"
alt="Signal Cab for iPhone" title="Signal Cab for iPhone"></a>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<a target="_blank" href="https://locontrol.flycricket.io/?t=1587818832">Locontrol</a>
</td>
<td>An elegant controller for iOS.</td>
<td>
<a target="_blank" href="https://locontrol.flycricket.io/?t=1587818832"><img
src="https://is3-ssl.mzstatic.com/image/thumb/Purple113/v4/c0/96/c6/c096c6e1-3c67-5d22-43aa-aba2a1bb1b36/pr_source.jpg/230x0w.jpg"
alt="Locontrol for Apple devices" height="125" title="Locontrol for Apple devices"></a>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<a target="_blank" href="/help/en/package/jmri/jmrit/webThrottle/webThrottle.shtml">WebThrottle</a>
</td>
<td>NOTE: This WiFI Throttle uses JMRI's Web Server. YOU MUST START Web Server before
using this app. Web control for locos, panels, turnouts and routes. Included in JMRI,
nothing to install!</td>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
<a target="_blank" href="/help/en/package/jmri/jmrit/webThrottle/webThrottle.shtml"><img
src="/resources/logo.gif" height="100" alt="WebThrottle for browsers"
title="WebThrottle for browsers"></a>
</td>
</tr>
</table>
<div style="clear: both;">
</div>
<h3>Function Labels</h3>
Function labels can be customized for each roster entry through JMRI, using the Labels &
Media button. These labels will then be displayed in place of the generic F1, F2... on the
screen of the mobile device. The labels can be added when a new roster entry is created, or
by editing an existing roster entry under the Function Labels tab.
<h3>Routes & Turnouts</h3>
The app can control any turnouts (and routes) that JMRI can control.Additionally, you can
limit what turnouts appear. In JMRI, with the WiThrottle window active, there is a menu named
WiThrottle. It has an item titled "Routes and Turnouts" that will let you pick which items to
display or hide.
<h3>Advanced Consisting</h3>
There are now two options for how Advanced (or Decoder Assisted) Consisting is handled. This
can be selected from the <a href="../../../apps/TabbedPreferences.shtml#WiThrottle">WiThrottle</a> portion of JMRI
Preferences.
<p>The default is <strong>NMRA Format</strong>. This will build a consist using NMRA
consisting commands. It does not use any techniques specific to the connected DCC system.
This allows WiFi throttles to work in a DCC manufacturer independent way. These consists may
perform better for building and controlling with WiFi devices.</p>
<p>The second option is <strong>DCC Brand-Specific</strong> which will build consists in a
manner where they will function as though built using a throttle from the DCC manufacturer.
This will follow manufacturer specific features as to how consists are built and controlled.
These consists should perform better when built with a WiFi device, but controlled by a
throttle from the DCC manufacturer of your system.</p>
<h2 id="remote">Using A Remote Mobile Device Throttle</h2>
<p>Typically, people using smartphones or tablets as throttles are physically in the same
room as the layout they are controlling. Mobile device throttles, however, can be operated
from anywhere in the world, significantly adding to the fun of model railroading by making it
possible to share control of a layout with family or friends many miles away.</p>
<p>Setting up a mobile device throttle is straighforward, as discussed above. Apps such as
the similarly named WiThrottle (for IOS devices) and EngineDriver (for Android devices) will
either recognize that JMRI WiThrottle Server is transmitting or ask you to connect to the
server manually by entering its IP address and port. The WiThrottle Server displays its
broadcast IP address and port in the top section of the WiThrottle window. If you are using a
typical home router, this will begin with 192 or 10 and consist of four parts, for example
192.168.0.103. This "internal" IP address will only be recognized by other devices connecting
to the same local network.</p>
<p>Setting up for a remote mobile device throttle requires some additional steps. If the
mobile device you are going to use as a throttle is connecting to a different network than
your local network (as, for example, is obviously the case if the remote operator is in
another city), that mobile device will have to be told the "external" or "public" address of
your JMRI computer and a port number that will allow it to connect remotely to your JMRI
computer. You can look up the public IP address for your local router either by logging into
the router's administrative portal or using a browser on your JMRI computer to go to the web
site <a href="https://whatismypublicip.com">WhatIsMyPublicIP.com</a> or similar. You then
have to create a link between that IP address and a port number to the internal IP address
and port number of the JMRI WiThrottle Server. This is called "port forwarding" and needs to
be set up on your local router. Setting up port forwarding varies with the model of router so
we won't attempt to give specific instructions on how to do that. However, detailed
instructions can usually be found on the internet and the topic has been addressed in the
JMRI online forum as well.</p>
<p>Once you have determined the public address of your JMRI computer and set up port
forwarding to the WiThrottle Server, you enter this information into the throttle app on your
mobile device. You will know you have been successful when your mobile device's name appears
in the WiThrottle Server window and your engine roster appears on your app.</p>
<p>TROUBLESHOOTING: if you get an error or your mobile device app doesn't appear to connect,
check that you have the correct internal and public IP addresses (which may change from day
to day due to the way your network router and internet service provider assign addresses),
correct port number, and that you saved the port forwarding information to your router's
memory.</p>
<p>Now all you have to do is provide a way for the remote engineer to talk with you and see
your layout while he or she takes control of your JMRI-enabled layout via a mobile device
throttle from anywhere in the world! [FYI: use FaceTime or Skype or some other video system
that provides realtime communication for this purpose. It is generally not recommended to use
remote monitoring cameras such as are used for baby monitoring or security cameras as most
introduce a several second delay -- something that could lead to some very interesting
railroad accidents!]</p>
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