BETAFPV ELRS Nano Receiver User Manual

1. Entwodiksyon

The BETAFPV Nano receiver is an advanced component based on the open-source ExpressLRS project, designed for high-performance RC applications. ExpressLRS is renowned for achieving optimal link performance in terms of speed, latency, and range, making it one of the fastest RC links available for long-range operations.

This receiver utilizes Semtech Lora SX127x or SX1280 hardware for robust communication. It supports a maximum packet rate of 200 Hz at 900 MHz and an impressive 500 Hz at 2.4 GHz with a custom OpenTX build. This manual provides essential information for setting up, operating, and troubleshooting your BETAFPV ELRS Nano Receiver.

Image: ExpressLRS welcome graphic, emphasizing its role as a customizable RC link.

2. Espesifikasyon

3. Konpozan enkli

Pake a tipikman gen ladan atik sa yo:

• 1 x BETAFPV ELRS Nano receiver
• 1 x BETAFPV T antenna
• 2 x Spare shrink tubes
• 4 x 30AWG silicon connection wires (1 black, 1 red, 1 white, 1 yellow)
• 1 x Pin header 1x4
• 1 x Quick Start Guide (physical manual)

Image: Contents of the BETAFPV ELRS Nano Receiver package, including receiver, antenna, wires, and manual.

4. Enstalasyon ak Enstalasyon

4.1 Receiver Diagram

Familiarize yourself with the components and pinouts of your specific receiver version:

2.4GHz Nano Receiver Diagram

Image: Detailed diagram of the 2.4GHz Nano Receiver, highlighting key components like LED, WiFi Antenna, Firmware Upgrade Button, ESP8285, IPEX MHF, PA+LNA, SX1280, and pin assignments (RX, TX, VCC, GND).

915MHz/868MHz Nano Receiver Diagram

Image: Detailed diagram of the 915MHz/868MHz Nano Receiver, highlighting key components like LED, WiFi Antenna, Firmware Upgrade Button, ESP8285, IPEX MHF, SX1276, and pin assignments (RX, TX, VCC, GND).

4.2 Wiring to Flight Controller

The ELRS Nano receiver communicates with the flight controller (FC) using the Crossfire serial protocol (CRSF). Ensure your FC supports this protocol. Connect the receiver to your FC as shown in the diagram below:

Image: Wiring diagram illustrating the connection between the ELRS Nano Receiver and a Flight Controller. Connect FC TX to Receiver RX, FC RX to Receiver TX, 5V to 5V, and GND to GND.

4.3 Konfigirasyon Betaflight

After wiring, configure your flight controller using Betaflight Configurator:

1. Onglet Pò yo: Enable the corresponding UART (e.g., UART3) as a Serial Rx.


Image: Screenshot of Betaflight Configurator's 'Ports' tab, showing how to enable a UART (e.g., UART3) for Serial Rx with a baud rate of 115200.

2. Tab Konfigirasyon: In the 'Receiver' panel, select 'Serial-based receiver' and choose 'CRSF' as the protocol. Telemetry is optional; enabling it may reduce your stick update rate.


Image: Screenshot of Betaflight Configurator's 'Configuration' tab, demonstrating the selection of 'Serial-based receiver' and 'CRSF' protocol.

5. Pwosedi Obligatwa

To bind your ELRS Nano receiver to your RF TX module or radio transmitter, follow these steps:

1. Power on and off the Nano receiver three times consecutively.
2. Observe the receiver's LED. It should begin a quick double blink, indicating it is in bind mode.
3. Initiate the binding process on your RF TX module or radio transmitter. This will send out a binding pulse.
4. Once successfully bound, the receiver's LED will show a solid light.

Nòt:

• The receiver stores binding information after a successful bind. It will automatically connect upon subsequent power-ups.
• Ensure your transmitter module is running a compatible ExpressLRS firmware version.

6. Operasyon Enstriksyon

After successful binding and configuration, your BETAFPV ELRS Nano Receiver is ready for operation. When powered on and connected to your flight controller, the receiver's LED will be solid, indicating a stable link with your transmitter.

• Tcheke anvan vòl: Always perform a range check and verify all control surfaces respond correctly before each flight.
• Telemetri: If telemetry is enabled in Betaflight, monitor signal quality (RSSI/LQ) and other relevant data on your transmitter screen.
• Mizajou mikrolojisyèl: Periodically check for new ExpressLRS firmware versions for both your receiver and transmitter module to benefit from improvements and new features. Firmware updates for the receiver can typically be performed via WiFi or passthrough.

NAN. Depanaj

• Receiver Not Binding:
  • Ensure the power cycle (on/off three times) is performed correctly, and the receiver LED shows a quick double blink.
  • Verify that your RF TX module or radio transmitter is in binding mode and transmitting a binding pulse.
  • Check for firmware compatibility between the receiver and transmitter module.
• No Communication with Flight Controller:
  • Double-check all wiring connections between the receiver and flight controller (RX, TX, 5V, GND).
  • Confirm that the correct UART is enabled for Serial Rx in Betaflight's 'Ports' tab.
  • Ensure 'Serial-based receiver' and 'CRSF' protocol are selected in Betaflight's 'Configuration' tab.
• Poor Signal Quality/Range:
  • Inspect the antenna connection to the receiver (IPEX MHF). Ensure it is securely attached.
  • Check the antenna placement on your drone. Avoid placing it directly against carbon fiber or other conductive materials that can block the signal.
  • Ensure the antenna is not damaged or kinked.

8. Konsèy itilizatè yo

Based on common practices and user feedback, consider the following tips for optimal performance:

• Plasman antèn: For best signal reception, position the receiver antenna as far away as possible from carbon fiber frames, batteries, and other electronic components that can cause interference or signal shielding.
• Jesyon Firmwèr: Regularly update both your ELRS receiver and transmitter module firmware to the latest stable versions. This ensures compatibility, access to new features, and bug fixes.
• Pwovizyon pou pouvwa: Always ensure the receiver receives a stable 5V power supply from the flight controller. Unstable power can lead to unexpected behavior or disconnections.
• Retresi chalè: Use the provided shrink tube to protect the receiver from environmental elements and short circuits, especially in FPV drone applications where crashes are possible.

9. Konfòmite ak Avi

⚠️ Avètisman:

Pou itilizasyon rekreyasyon sèlman. Modifikasyon ilegal dron/avyon entèdi. Tanpri tou peye atansyon sou lwa ak règleman ki enpòtan yo sou itilizasyon dron/avyon nan peyi/zòn ou an pou asire itilizasyon legal.