01
Sign Up
Free. Sign up and name your layout. Your roster, settings, and layout data sync instantly across every device.
Simple to start.
Built to grow.
Throttles, turnouts and automation for DCC-EX. Connect your EX-CommandStation to every phone, tablet, and laptop in the room — drive, automate, and grow your layout from any browser. Free.
Everything your
tiny empire needs.
DEJA Server runs on one computer plugged into your EX-CommandStation by USB. Every phone, tablet, and laptop reaches it through DEJA Cloud — there's nothing else to install.
Your devicesDEJA Cloud
DEJA Server
The one thing you need: a computer running
deja start — Mac, Windows, Linux or Raspberry Pi.
Your track
Trains, turnouts and IO respond.
Drive.
Every phone, tablet and laptop is a throttle.
Any browser becomes a cab — speed, direction, functions, sounds and consists, in four throttle styles. Engine Driver and other WiThrottle apps drive alongside.
Automate.
Sensors, turnouts, signals and trains, wired together. When a train trips a sensor, DEJA can throw the turnout, clear the signal and bring the train into the station — automations run on your DEJA Server, even with the app closed.
DejaBot
Watching Block 3…Block 3 is occupied!Throwing T3 to the siding.Signal 2 is green.Bringing UP 1011 into the station.Run complete!
- 1 When Block 3 sensor
- 2 Throw Turnout T3
- 3 Set Signal 2
- 4 Run UP 1011 to the station
Plus routes and track diagrams to line up a whole path in one tap.
Grow.
With DEJA IO, add Arduino Mega, ESP32 and Pico W boards for lights, servos, signals and sensors, over USB or WiFi. No code to write — plug in, attach your accessories, configure them in Throttle and deploy; the firmware comes with DEJA. WLED strips join as devices too. DEJA IO even works without an EX-CommandStation — handy for lighting and animating a scene before the trains arrive, or alongside your existing DCC system.
Any phone, tablet or browser
over the internet
Your computer runs DEJA Server
USB · required
DCC-EX CommandStation
DCC
Your layout
- Arduino Mega
- ESP32
- Pico W
- WLED
Quick Start
Running trains in three steps.
02
Install the Server
Plug in your deja login to connect your account, and deja start to launch the server.
bash
$
curl -fsSL https://install.dejadcc.com | bash
03
Run
Open the Throttle app on any device — phone, tablet, or desktop. Scan the QR code to launch it instantly on your phone.
Scan to open on phone
Scan to open on phone
Introducing Guest Mode.
Let visitors explore your layout from their phones — no account. They scan your guest QR code, pick a fun railroad name, type the Room Code on your display, and they're aboard.
- Explore your stops
- Photos, a voice-over, the tall tale and the real deal — on a map of your layout.
- Guests can interact with your effects
- Choose which lights, sounds and animations they can access.
- Hunt for hidden eggs
- Find them all on the layout for a golden ticket and an air-horn send-off.
No Java. No XML. One install.
One small server on the computer by your EX-CommandStation, installed with one command. Your throttles run in any browser.
| Desktop-era control | DEJA |
|---|---|
| A Java desktop app | A small server, installed with one command on the computer by your EX-CommandStation |
| XML panel files | Set up in Throttle, synced live |
| One computer at the desk | Every phone, tablet and laptop in the room |
| Installed on each machine | Installed once; phones and tablets just open a browser |
Watch the
quickstart.
Sign up, install the server, and run your first train — start to finish.
Ready to
run trains?
Free — optional donations support development (opens in a new tab). Setup sessions are paid help from Track & Trestle.