hJOP Driver
Overview
• The hJOP Driver application transforms your mobile device into a professional handheld controller for model railroads managed by the hJOP system (http://hjop.kmz-brno.cz).
• Designed for hobbyists who demand realistic interaction with their layout, this tool bridges the gap between digital dispatching and physical locomotive operation.
• Please note that a functional hJOP server environment is a mandatory requirement for this application to operate.
Key Features and Functionality
1. Direct Network Integration:
• The application establishes a seamless connection to your hJOP server over a local WiFi network, ensuring low-latency communication between your device and the model railroad.
2. Dispatcher Collaboration:
• Users can request control of specific locomotives directly from the railroad dispatcher.
• This replicates the real-world workflow of an engine driver checking in with central control before beginning a route.
3. On-Screen Throttle Control:
• Once a locomotive is assigned, you gain full command over your engines.
• The interface provides intuitive controls to manage speed, direction, and specific functions, putting the power of the throttle directly in your hands.
4. Real-Time Feedback:
• Receive up-to-the-minute status updates from the server, allowing you to monitor engine behavior and system alerts while you navigate your model tracks.
System Requirements and Setup
1. Server Dependency:
• This application is exclusively designed for use with the hJOP framework.
• It will not function as a standalone DCC controller or with other third-party model railroad software.
2. Network Stability:
• A stable and robust WiFi connection is essential for maintaining constant contact with the hJOP server.
3. Operating Procedure:
• Ensure that the hJOP server is properly configured and accessible on your network before attempting to connect the application.
• Once connected, your device acts as an extension of the dispatching system, allowing for authentic, interactive model railroad operation.
FAQ
Q: Can I use this app as a standalone controller without the hJOP server?
A: No, the application is strictly designed to function as a client within the hJOP framework. It cannot operate as a standalone DCC controller or connect to other third-party model railroad software systems, as it relies entirely on the server to manage the layout.
Q: What do I need to prepare before using the app for the first time?
A: Before you begin, ensure that your hJOP server is fully configured, running, and accessible on your local network. You must also ensure that your mobile device is connected to the same local WiFi network as the server to establish a stable communication link.
Q: How does the application connect to my layout?
A: The app utilizes your local WiFi network to establish a direct connection to your hJOP server. This setup is chosen specifically to ensure low-latency communication, which is vital for smooth and responsive locomotive control during your operating sessions.
Version History
v2.4——7 Jul 2026
hJOP Driver allows user to control model railroad via hJOPserver Download the latest version of hJOP Driver to enjoy new features and updates immediately!
*2.4
EN:
• Show selected and real dynamic vehicle speed.
• Make 'Emergency stop' button red.
• Remove ATP EB override functionality.
CZ:
• Zobrazit nastavenou i reálnou dynamickou rychlost vozidla.
• Tlačítko "Nouzové stop" je červené.
• Zrušit možnost přemostění nouzového brzdění VZ.
*2.3
* ATP: vibrate.
* Vibration and sound is enabled/disabled based on phone mode (full sound / vibrate only / muted).
*1.19
* Allow to set whether the "remember password" checkbox should be checked by default.
* Disconnect from previous server when new connection attempt is started.
* Only one line of optional message for the dispatcher.
* Change of login is immediate (bugfix).
* Add option to freeze screen orientation in train control activity.
* More refactorings related mainly to TCP communication with hJOPserver.
