What is the use of a traversing machine receiver?
In the field of drones and flying machines, the receiver is a crucial component. It is responsible for receiving signals from the remote controller and transmitting them to the flight control system, thereby achieving precise control of the aircraft. With the rise of traversing aircraft, the performance and functions of receivers have also become the focus of pilots. This article will analyze in detail the functions and types of traversing machine receivers and how to choose a suitable receiver.
1. The function of the traversing machine receiver
The receiver plays the role of "signal relay station" in the traversing machine system. Its core functions include:
1.signal reception: Receive radio signals from the remote control (such as 2.4GHz or 900MHz frequency band).
2.Signal decoding: Decode the received signal into instructions that the flight control system can recognize.
3.low latency transmission: Ensure the rapid transmission of control instructions, reduce flight delays, and improve control response speed.
4.Anti-interference ability: Maintain signal stability in complex environments (such as multiple aircraft flying together or in urban areas).
2. Types of traversing machine receivers
According to communication protocols and connection methods, traversing machine receivers can be divided into the following categories:
| Type | Agreement | Features |
|---|---|---|
| PWM receiver | Traditional PWM signal | Wide compatibility, but large in size and complex wires |
| PPM receiver | PPM signal | Single wire transmits multi-channel signals, simplifying wiring |
| SBUS receiver | Futaba SBUS | Digital signal, low latency, supports reverse transmission |
| CRSF receiver | Crossfire | Long-distance communication, strong anti-interference, suitable for racing |
| ELRS receiver | ExpressLRS | Open source protocol, ultra-low latency, high cost performance |
3. How to choose a traversing machine receiver
Here are some key factors to consider when selecting a receiver:
| factors | Description |
|---|---|
| Compatibility | Need to match the remote control protocol (such as TBS Crossfire, FrSky, etc.) |
| latency performance | For racing flights, it is recommended to choose ELRS or CRSF (delay <10ms) |
| Transmission distance | 2.4GHz is sufficient for normal flights; 900MHz band is required for long-distance flights |
| Volume weight | Micro receivers (such as the Nano model) are suitable for light traversing machines |
| price | ELRS receivers are usually cheaper (about 100-300 yuan) |
4. Recommendation of popular receiver models (2023)
| Model | Agreement | delay | Price (yuan) |
|---|---|---|---|
| TBS Crossfire Nano | CRSF | 9ms | 450-600 |
| HappyModel EP1 | ELRS | 7ms | 120-180 |
| FrSky R-XSR | SBUS | 15ms | 200-280 |
| Flysky FS-A8S | PPM | 20ms | 80-150 |
5. Precautions for receiver installation and debugging
1.Antenna layout: Avoid contact with carbon fiber parts. It is recommended to install it at a 90° angle to enhance signal coverage.
2.Firmware upgrade: Regularly update the receiver firmware to fix bugs or improve performance (for example, ELRS can be upgraded via WiFi direct connection).
3.Signal test: Use the RSSI (Signal Strength Indication) function of the remote control to check the stability in the actual flight environment.
4.Troubleshooting: If signal loss occurs, check the antenna connection first or change the frequency band (such as switching from 2.4GHz to 900MHz).
Conclusion
Although the traversing machine receiver is small, it is the core guarantee for flight safety and control experience. With the popularity of open source protocols such as ELRS, the cost of high-performance receivers is decreasing. It is recommended that pilots choose a protocol based on actual needs and pay attention to the details of antenna installation so that they can fully utilize the extreme performance of the traversing machine.
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