RadioMaster TX15 V5.0 ELRS RC Transmitter User Manual

Introduction

This manual provides comprehensive instructions for the setup, operation, and maintenance of your RadioMaster TX15 V5.0 ELRS RC Transmitter. Designed for FPV and RC enthusiasts, the TX15 V5.0 features advanced controls, a high-visibility touchscreen, and robust performance. Please read this manual thoroughly before using your transmitter to ensure safe and optimal operation.

Safety Information

No specific safety information was provided with this product. Always exercise caution when operating remote-controlled devices. Ensure you understand local regulations regarding RC operation, maintain a safe distance from people and property, and regularly inspect your equipment for damage before use.

Package Contents

Verify that all items listed below are present in your package:

• 1 * TX15 Radio Controller
• 1 * Signature Carry Case
• 1 * Short 2-position Latching Shoulder Toggle Switch Assembly
• 1 * Short 2-position Momentary Shoulder Toggle Switch Assembly
• 1 * 18650 Battery Tray
• 1 * USB-C Cable
• 1 * Screen Protector
• 1 * 1.5mm Hex Wrench
• 4 * High Tension Gimbals Springs
• 2 * Gimbal Stick Set Screw
• 1 * Stickers Set
• 1 * User Manual (This document)
• 1 * Inventory Card

Image: The RadioMaster TX15 V5.0 ELRS RC Transmitter shown with its carry case, USB-C cable, battery tray, and various accessories.

Product Overview and Features

The RadioMaster TX15 V5.0 is a high-performance radio controller designed for precision and reliability in RC applications. Key features include:

• Powerful Performance: Equipped with an STM32 H7 chip for smooth EdgeTX operation, 4GB internal flash memory, and a MicroSD card slot for expanded storage. This enables instant model switching and fast script execution.
• Long-Range ELRS: Features an LR1121 transceiver supporting both 2.4GHz and 900MHz frequencies for extended range and reliable signal. Includes a smart battery system and a foldable antenna for enhanced portability.
• Advanced Controls: Integrated gyro with TiltX/TiltY functionality. Comes with swappable shoulder switches (momentary/two-position) for versatile control configurations.
• Bright Display & Design: A 3.5-inch IPS touchscreen with 600 nits brightness ensures visibility even in direct sunlight. Features V5.0 Hall sensor gimbals for precise control.
• Enhanced Features: USB-C port for charging, SIM connectivity for flight simulators, advanced cooling system, and easy firmware updates for continuous improvement and reliable performance.

Image: Multiple views of the RadioMaster TX15 V5.0 ELRS RC Transmitter, showcasing its ergonomic design and control layout.

Image: Close-up views illustrating the dimensions of the TX15, the precision Hall gimbals, and the battery compartment for 18650 cells.

Image: Visual representation of the 4GB internal flash memory, Micro SD card slot, Semtech LR1121 multi-frequency ExpressLRS module, built-in microphone, customizable RGB buttons, external module support, anti-slip back grip, replaceable shoulder switches, and smart active balance charging for 18650 batteries.

Setup

1. Battery Installation: The TX15 requires a 7.4V 2-cell Lithium-Polymer battery or two 3.7V 18650 Lithium-Ion cells (batteries not included). Insert the batteries into the battery compartment, ensuring correct polarity. Use the provided 18650 battery tray if using 18650 cells.
2. MicroSD Card: (Optional) Insert a 32GB/FAT32 formatted MicroSD card into the designated slot. Note that inserting a MicroSD card will disable the onboard flash memory for storage.
3. Initial Power On: Press and hold the power button to turn on the transmitter. The 3.5-inch IPS touchscreen will display the EdgeTX interface.
4. Firmware Update: It is recommended to update the radio firmware (EdgeTX version 3.0.0 or later) and module firmware (ExpressLRS) to the latest versions using the USB-C port (UF2 method).
5. Gimbal Adjustment: Use the included 1.5mm hex wrench and gimbal stick set screws to adjust gimbal tension and stick length to your preference. High tension gimbal springs are also provided for customization.
6. Shoulder Switch Customization: Replace the standard shoulder switches with the included short 2-position latching or momentary toggle switch assemblies as needed for your control setup.

Image: The 3.5-inch IPS touchscreen displaying the EdgeTX interface and the multi-functional USB-C port for data transmission, charging, and simulator use.

Operating Instructions

1. Navigation: Use the 3.5-inch IPS touchscreen and the navigation buttons (SYS, RTN, PAGE, TELE) to navigate through the EdgeTX menu system.
2. Model Setup: Access the model menu to create, edit, and manage your aircraft models. Configure channels, mixes, and flight modes according to your specific needs.
3. Binding: Follow the ExpressLRS binding procedure to link your TX15 transmitter with your compatible ExpressLRS receiver. Refer to the ExpressLRS documentation for detailed binding instructions.
4. Gimbal Control: Utilize the V5.0 Hall sensor gimbals for precise control of your RC model. The built-in gyro (ICM-42607-C) provides advanced stabilization and control options.
5. Charging: Connect the TX15 to a USB-C power source using the provided USB-C cable for charging. The smart active balance charging system helps prevent overcharging and extends battery life.
6. Simulator Use: Connect the TX15 to your computer via the USB-C port to use it as a joystick for flight simulators.

Maintenance

• Cleaning: Use a soft, dry cloth to clean the transmitter's exterior. Avoid using harsh chemicals or abrasive materials.
• Storage: Store the transmitter in a cool, dry place, away from direct sunlight and extreme temperatures. Use the provided carry case for protection during transport and storage.
• Battery Care: If storing for extended periods, remove the batteries or ensure they are charged to a storage voltage (typically around 3.8V per cell for LiPo/Li-Ion).
• Firmware Updates: Regularly check for and install the latest EdgeTX and ExpressLRS firmware updates to ensure optimal performance and access to new features.
• Gimbal Inspection: Periodically inspect the gimbals for smooth operation and any signs of wear.

Troubleshooting

• Transmitter Not Powering On:
  • Ensure batteries are correctly installed and fully charged.
  • Check battery polarity.
• No Signal to Receiver:
  • Verify that the transmitter and receiver are properly bound.
  • Check the antenna connection on the transmitter.
  • Ensure the correct model is selected on the transmitter.
  • Confirm the internal RF module is active and configured correctly.
• Screen Not Responding:
  • Perform a soft reset by holding the power button until the device restarts.
  • Ensure the screen protector is not interfering with touch input.
• USB-C Connectivity Issues:
  • Try a different USB-C cable and port.
  • Ensure the correct USB mode (Data Transmission, Charging, Simulator) is selected on the transmitter.

Specifications

Image: An overview of the RadioMaster TX15 V5.0, emphasizing its core technologies like the STM32 H7 processor, LR1121 ExpressLRS module, V5.0 Hall Gimbals, 4GB Integrated Flash Memory, Foldable Antenna, and 3.5" Color Touchscreen.

Image: A detailed illustration of the STM32 H750 chip, highlighting its role as the powerful processor within the TX15.

Image: Depiction of the 4GB high-speed internal flash memory, the Micro SD card slot, and the Semtech LR1121 multi-frequency ExpressLRS module, indicating maximum range and low latency.

Warranty and Support

For warranty information and technical support, please refer to the official RadioMaster website or contact your authorized dealer. Keep your proof of purchase for warranty claims.