BETAFPV SuperD ELRS is the first True Diversity receiver that applies two antennas, two receiver chains and TCXO (temperature compensated crystal oscillator) technology, achieving super accurate frequency rate and excellent performance in extreme temperature environments. It offers 2.4GHz and 915MHz/868MHz versions and largely meets reliability requirements for long-range flight, aerial photography or FPV freestyle tricks.
Recommend ExpressLRS Recovery Stick to flash or reset your receiver.
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- A true diversity receiver with two complete RF receiver chains (referred to as dual SX1280/SX1281 or dual SX1276), based on the latest official ExprssLRS. Comes with ExpressLRS V3.0.0 firmware.
- The ultra-light weight is only 1.1g without the antenna. The receiver board has a reasonable layout and is spotlessly clean. Very easy to solder.
- Two Dipole T antennas will create an omnidirectional signal for good signal transmission. It is recommended to place the antenna separately and vertically as far apart as possible to get a better signal.
- It is not only used for FPV drones but also for fixed-wing FPV or other FPV aircraft. It has superb performance in long-range flight.
- The first true diversity receiver for the 915 MHz/868 MHz frequency bands, with two separate receiver modules that work together to improve signal reception quality and overall reliability.
- The 900 MHz radio system exhibits greater diffraction capability due to its lower frequency, while 2.4 GHz systems tend to be directional and susceptible to attenuation caused by buildings, foliage, or moisture.
Specifications
- Item: BETAFPV SuperD ELRS 2.4GHz/915 MHz/ 868 MHz Diversity Receiver
- MCU: ESP32 PICO D4, dual SX1280 (SX1281) (2.4 GHz) / dual SX1276 (915 MHz /868 MHz)
- Telemetry Power: 20 dBm (2.4 GHz) / 17 dBm (915 MHz / 868 MHz)
- Weight excluding antenna: 1.1g (2.4GHz) / 1.2g (915MHz / 868MHz)
- RF Frequency: 2.4 GHz (ISM) / 915 MHz FCC / 868 MHz EU
- Antenna connector: IPEX MHF 1/U.FL
- Input voltage: +5V DC @ "+" pad.
- Receiver protocol: CRSF
- PCB Size: 22mm x 14mm
First True Diversity receiver with TCXO
The 2.4 GHz Diversity SuperD ELRS receiver is integrated into a TCXO (temperature compensated crystal oscillator), shared by two RF chips for a highly precise clock source. The true diversity receiver including two RF chips and PA+LNA will generate a large amount of heat during operation. With high-quality TCXO, it can withstand extreme temperatures without fear of heat and cold, continuously outputting precise frequency for long-range flight. Click to learn more about TCXO.
BETAFPV ExpressLRS receivers
The 2.4GHz Diversity SuperD ELRS receiver has two RF receiver chains with two antennas, ensuring longer and more stable flights for FPV drones and RC airplanes. Choosing a suitable receiver for driving quadcopters or other RC models is very important. BETAFPV ExpressLRS receivers, including ELRS Lite, Nano, Micro and the brand new SuperD, largely meet pilots' requirements for FPV flight.
| SuperD RX | Micro RX | NanoRX | Lite RX | |
| Weight | 1.1g (2.4GHz), 1.2g (915/868MHz) | 3.5 g (RX only) | 0.7 g (RX only) | 0.47g (tower), 0.53g (flat) |
| Antenna | IPEX MHF1+T antenna | IPEX MHF1+T antenna | IPEX MHF1+T antenna | Ceramic SMD antenna |
| MCU | ESP32-PICO-D4 | ESP8285 | ESP8285 | ESP8285 |
| RF chips | Dual SX128X + Dual PA (2.4 GHz), Dual SX1276 (915/868 MHz) | SX128X | SX128X + PA, SX1276 + PA | SX128X |
| Frequency | 2.4 GHz ISM, 915 MHz (FCC), 868 MHz (EU) | 2.4GHz ISM | 2.4 GHz ISM, 915 MHz (FCC), 868 MHz (EU) | 2.4GHz ISM |
| Telemetry power | 100mW | 17mW | 100mW | 17mW |
| Serial output protocol | CRSF | PWM or CRSF | CRSF | CRSF |
| Model type | FPV drone, fixed wing aircraft | Fixed wing planes, helicopters, RC cars, RC boats | FPV Drone | Drone scream |
Diagram
The schematic of the 2.4GHz SuperD receiver version is shown below.
The RGB status indication of the SuperD receiver is shown below.
| RGB color | State | Description |
| Rainbow | Fading effect | Power on |
| Green | Slow flashing | Wi-Fi update mode |
| Red | Quick flash | No RF chip detected |
| Orange | Double flash | Binding mode |
| Orange | Triple flash | Pattern matching configuration connected but not matching |
| Orange | Slow flashing | Waiting for connection |
| Solid | Connected and the color indicates the packet speed |
The RGB light color corresponding to the packet rate is shown in the following figure.
2.4GHz:
Note: F1000 and F500 are FLRC mode rate packets, which provide faster modulation and lower latency, but at the same time have shorter receiving distance than normal Lora mode. This mode is great for runners.
D500 and D250 are installment packages in DVDA (Deja Vu Diversity Aid) mode. This mode operates at the F1000 data packet rate of FLRC mode, providing a better link connection in case of complex interference by sending the same data packet multiple times. D500 and D250 indicate that the same data packet is sent two and four times, respectively.
915MHz/868MHz:
Note: D50 is a mode unique to ELRS Team900. With the 200Hz refresh rate of Lora mode, the same data packet is repeatedly sent four times, and the receiving distance is equivalent to 200Hz.
100Hz Full is a mode that realizes 16-channel full resolution output at the 200Hz refresh rate of Lora mode, and the receiving distance is equivalent to 200Hz.
Configuration and association
ExpressLRS uses the Crossfire serial protocol (AKA CRSF protocol) to communicate between the SuperD diversity receiver and the flight controller board. Take the flight controller using Betaflight firmware as an example to introduce the wiring and port configuration.
The connection between the SuperD diversity receiver and the flight controller is shown in the following figure
Connect the flight controller to the Betaflight configurator for basic configuration. First, on the "Port" page, enable the flight controller's serial port (take UART1 as an example) as "Serial Rx".
On the configuration page, set Receiver Mode to Serial (via UART) and Serial Receiver Provider to CRSF.
The default SuperD diversity receiver firmware uses the ExpressLRS V3.0.0 protocol and does not have a preset binding phrase. Therefore, the firmware version of the transmitter module must be ExpressLRS V3.0.0 or later. Both the receiver and transmitter modules must not have any binding phrases.
- Turn the receiver on and off 3 times, each step pausing for 2 seconds to enter binding mode;
- When the indicator begins to quickly flash orange twice, reception is in bind mode;
- Enter the binding mode of the radio module or transmitter to bind to the receiver; if the indicator has become solid, it indicates that the device has been paired successfully.
Note: After pairing once, the receiver will remember your saved pairing phrase and device automatically. Further rebooting of the device will be done automatically without the need for a rebinding process.
The default 2.4GHz firmware is ELRS V3.0.0. If you want to connect with a remote control or transmitter module, please update it to V3.0.0 or above. If you would like to update to the latest official ELRS firmware for your SuperD receiver, please update the ELRS Configurator to version V1.5.2 or later. Select the target device "BETAFPV SuperD 2.4GHz RX".
The default 915 MHz/868 MHz firmware is ELRS V3.3.0. The official version has not been released yet. It will be updated synchronously with ELRS V3.3 version. Then you can click the latest ELRS Nightly Configurator to operate. Select the target device ''BETAFPV SuperD 900MHz RX''.
Note: The firmware for 915 MHz/868 MHz is currently a self-compiled firmware.
FAQ
- BETAFPV SuperD ELRS 2.4 GHz Diversity Receiver User Manual for download.
- Download the firmware for the Diversity SuperD ELRS 2.4GHz/915MHz/868MHz receiver.
- How to Flash Firmware via Passthrough or WIFI for SuperD Receiver.
- Download the STL file for 3D printing TPU supports for SuperD ELRS 2.4 GHz Diversity RX.
Learn more about ExpressLRS
ExpressLRS is an open source RC link for RC applications. Everyone could find this project on Github or join the discussion in Facebook Group.
Package Included
- 1 x Diversity SuperD 2.4 GHz receiver
- 2*2.4GHz T antenna
- 1*4 pin header
- 1 * 4 Pin Wire Harness
- 1 * Instruction Manual
- 2 heat shrink tubes
- 1 SuperD 915 MHz/868 MHz Diversity Receiver
- 2*915MHz/868MHz T Antenna
- 1*4 pin header
- 1 * 4 Pin Wire Harness
- 1 * Instruction Manual
- 2 heat shrink tubes
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| Version |
ELRS 2.4 GHz, ELRS 915MHz, ELRS 868MHz |
|---|
