Radiomaster XR1 2.4GHz Sub-G 900MHz Dual-Band ExpressLRS Receiver User Manual

1. Introduzzjoni

The Radiomaster XR1 Nano Multi-Frequency ExpressLRS Receiver is a compact and versatile receiver designed for remote control applications. It utilizes the advanced Semtech LR1121 transceiver, supporting both 2.4GHz and Sub-G 900MHz frequency bands. This receiver offers exceptional range and sensitivity, making it suitable for various builds requiring reliable link quality with ExpressLRS systems.

This manual provides detailed instructions for the setup, operation, and maintenance of your XR1 receiver to ensure optimal performance and longevity.

2. X'hemm fil-Kaxxa

Image: Package contents including the XR1 receiver, T-Antenna, CRSF wire, and heat-shrinkable tubes.

• 1 x XR1 Nano Multi-Frequency ExpressLRS Receiver
• 1 x T Antenna (Either 2.4GHz, 900MHz, or Dual-band, depending on the selected package)
• 1 x wajer CRSF
• 3 x Tubu li Jiċkien bis-Sħana
• 1 x Manual Card (This document)

3. Karatteristiċi ewlenin

Immaġni: Fuqview of the XR1 receiver's main features.

• Operazzjoni ta' Faxxa Doppja: Supports both 2.4GHz and Sub-G 900MHz frequency bands using the Semtech LR1121 transceiver.
• Daqs kompatt: Ultra-compact design, measuring 20mm x 13mm.
• Prestazzjoni Għolja: Equipped with an ESP32C3 high-performance MCU.
• Telemetrija: Provides 100mW telemetry RF power.
• Konfigurazzjoni Faċli: Built-in Wi-Fi for effortless configuration and firmware updates via an intuitive WebUI
• Konnettività flessibbli: Features a secondary UART port and castled pads for easy soldering.
• ExpressLRS Compatibility: Pre-installed with ExpressLRS v3.5.1 firmware.

4. Istruzzjonijiet ta' Setup

4.1. Dijagramma tal-Wajers

Connect the XR1 receiver to your flight controller or compatible device using the provided CRSF wire. Ensure correct polarity for power (5V) and ground (GND), and proper connection for RX and TX data lines.

Immaġni: Dettaljata view of the XR1 receiver's connection pads.

• 5V: Power input (5 Volts DC)
• GND: Art
• TX: Trażmetti d-dejta (qabbad ma' RX fuq il-kontrollur tat-titjira)
• RX: Irċievi d-dejta (qabbad mat-TX fuq il-kontrollur tat-titjira)

4.2. Installazzjoni tal-antenna

Attach the T-Antenna to the IPEX-1 connector on the receiver. Ensure the antenna is securely connected and positioned away from carbon fiber or other conductive materials for optimal signal reception.

Image: Various antenna options for the XR1 receiver.

The XR1 receiver supports 2.4GHz or Sub-G 900MHz. If you have a Dual-Band antenna, it allows for use of either frequency without needing to change antennas.

4.3. Proċedura Vinkolanti

The XR1 receiver comes with ExpressLRS v3.5.1 pre-installed. To bind the receiver to your ExpressLRS transmitter:

1. Power on the receiver three times, cycling power quickly between each power-on. The LED on the receiver should flash rapidly, indicating it is in binding mode.
2. On your ExpressLRS compatible transmitter, navigate to the ExpressLRS LUA script or menu and select the "Bind" option.
3. Once bound, the LED on the receiver will turn solid, indicating a successful connection.

For detailed binding instructions specific to your transmitter, refer to your transmitter's user manual or the official ExpressLRS documentation.

4.4. Firmware Updates and Configuration (Wi-Fi)

The XR1 features built-in Wi-Fi for convenient firmware updates and configuration. To access the WebUI:

1. Qawwa fuq ir-riċevitur.
2. Connect to the Wi-Fi network broadcast by the receiver (usually named "ExpressLRS_RX" followed by a unique identifier).
3. Iftaħ a web browser u naviga għal http://10.0.0.1.
4. Mill- WebUI, you can update firmware, change settings, and configure your receiver.

5. Istruzzjonijiet Operattivi

5.1. Powering On and Initial Check

After successful setup and binding, power on your model. The receiver's LED should illuminate solid, indicating a stable connection to your transmitter. Perform a range check and verify all control surfaces respond correctly before flight.

5.2. Telemetrija

The XR1 receiver provides 100mW telemetry RF power, allowing your transmitter to receive real-time data from your model, such as RSSI (Received Signal Strength Indicator), link quality, and battery voltage (if configured). Refer to your flight controller and transmitter documentation for telemetry setup and display.

5.3. Kompatibilità

The XR1 receiver is compatible with all existing Radiomaster ExpressLRS radios and modules. Ensure your transmitter module is also running a compatible ExpressLRS firmware version.

Image: Compatibility chart for Radiomaster ExpressLRS radios and modules.

6. Manutenzjoni

• Żomm Nadif: Regularly inspect the receiver for dirt, dust, or debris. Use a soft, dry brush or compressed air to clean it.
• Ipproteġi mill-umdità: The XR1 is not water-resistant. Avoid exposure to moisture or extreme humidity. If exposed, ensure it is completely dry before powering on.
• Spezzjoni tal-antenna: Periodically check the antenna for any damage or loose connections. A damaged antenna can significantly reduce range and signal quality.
• Aġġornamenti tal-Firmware: Keep the receiver's firmware updated to the latest version to benefit from performance improvements and new features. Use the Wi-Fi WebUI for updates.

7 Issolvi l-problemi

8. Speċifikazzjonijiet

Image: Physical dimensions of the XR1 receiver.

Image: Weight of the XR1 receiver.

Image: LR1121 Receiver Frequency Compatibility Chart.

9. Appoġġ u Garanzija

For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact Radiomaster customer support through their official webis-sit jew il-bejjiegħ bl-imnut li mingħandu xtrajt il-prodott.

Please retain your proof of purchase for any warranty claims. Warranty terms and conditions may vary by region and retailer.

Official Radiomaster Store: Radiomaster Store on Amazon