.. toctree:: :hidden: :includehidden: about/index prerequisites/index operation/index configuration/index
.. toctree:: :hidden: :includehidden: :caption: Help & Support videos/index contact/index
.. toctree:: :hidden: :includehidden: :caption: Get Engine Driver downloads/index changes/index
.. toctree:: :hidden: :includehidden: :caption: Additional Info about/privacy-policy glossary/index contributing/index
|JEDT|, more commonly known as |ed|, is a free Android application that connects to a WiThrottle™ [1] Server or DCC-EX EX-CommandStation to control model trains.
Supported servers include |JMRI|, |EX-CS|, MRC Prodigy WiFi, Digitrax LnWi, and WifiTrax (for NCE). Once connected, you can control the speed direction and up to 32 DCC functions of your DCC enabled locomotives (locos). From one to six locos or |locos_consists| can be controlled at the same time. You can easily create and edit on-the-fly |consists| (software-defined). You can also control layout power, turnouts/points, routes, and access JMRI web panels and windows.
Note
See the :doc:`/about/index` page for more information. |BR|See the :doc:`/operation/index` page for details on how to use |ed|.
You can use |ed| to operate your DCC or DC [2] model train layout without being physically tethered by any wires. This allows you to walk around your layout, following your trains and/or position yourself anywhere around your layout (e.g. at your favourite viewing position).
You can add additional |ed| controllers inexpensively using old Android phones or tablets, instead of proprietary controllers. (You don't need to have a sim card in the phone.)
You only need to interact with JMRI and/or your |CS| directly when setting up or re-configuring your layout. Once configured, you do not need to interact with either JMRI or your |CS| directly while you are running your trains.
| [1] | 'WiThrottle' is a trademark owned by Brett Hoffman. It is also an iOS app developed by Brett Hoffman which has similar capabilities to |ed|. |BR|The 'WiThrottle protocol' is a communications protocol developed by Brett Hoffman. It is used by JMRI, |ed|, the WiThrottle app and a number of other apps and |CSs|. |BR|References in this website to a '|WTS|', refer to a server that can communicate using the 'WiThrottle protocol'. |
| [2] | The |EX-CS| is capable of driving DC Pulse Width Modulation (PWM) outputs as well as, or instead of, DCC outputs. |ED| is therefor capable of running DC locos as easily as it does DCC locos. |

