BETAFPV Serial ELRS F4 1S 5A AIO Brushless Flight Controller for 65/75mm 1S FPV Whoop Drones

The BLHeli_S firmware now supports the BB51 hardware. This board is powered by BB51 hardware. BetaFlight Configurator, BLHeli Configurator, and Bluejay Configurator are no longer valid for the BB51 ESC. The Serial ELRS 2.4G RX uses the Crossfire serial protocol (CRSF protocol) to communicate between the RX and the FC board. As a result, the Serial ELRS 2.4G RX is available to support upgrading to ELRS V3.0 without the need to flash Betaflight FC firmware.

To enter the binding status, power the device on and off three times. Plug in and unplug the FC three times, ensuring that the RX LED is performing a quick double blink, indicating that the RX is in bind mode. Ensure that the RF TX module or radio transmitter enters binding status, sending out a binding pulse. If the RX has a solid light, it is bound.

The Betaflight Firmware and CLI F4 1S 5A AIO Brushless FC comes with the default firmware betaflight_4.3.1_BETAFPVF411 (ELRS). The default firmware for the Serial ExpressLRS 2.4G RX version supports ELRS V2.4 RX. It's important to note that for the Serial ExpressLRS 2.4G version, only the newest Betaflight firmware 4.3.1 supports the BMI270 gyro.

The FC specifications are as follows: FC CPU: STM32F411CEU6 (100MHZ), Six-Axis: BMI270, Built-in RX: Serial ExpressLRS 2.4G, RX antenna: Line antenna, FC Size: 3030mm, Mounting Hole Size: 2626mm, Firmware version: betaflight_4.3.1_BETAFPVF411 (ELRS), OSD: Built-in BetaFlight OSD, Blackbox: 8MB.

The recommended VTX is >=200mW, such as the BETAFPV M03 VTX or TBS Unify VTX. The power cable is 55mm long, with a BT2.0 connector. The weight of the ELRS version is 3.6g without the BT2.0 power cable.

The ESC specifications are as follows: Power supply: 1S, Current: 5A continuous and peak 6A (3 seconds), ESC firmware: A_X_5_.HEX for BB51 BLHeli_S hardware, Signal Support: D-shot150, D-shot300, D-shot600, Oneshot125, Multishot, PWM.

The package includes: 1 * F4 1S 5A AIO Brushless FC (ELRS), 4 * M1.2x4mm Screws, 4 * M1.4x5mm Screws, and 4 * Anti-vibration Rubber Dampers.

Compared to the previous version, the new board uses Serial ExpressLRS 2.4G instead of SPI ELRS 2.4G, enabling support for ExpressLRS V3.0. Pilots can flash any version of ELRS RX firmware via Wi-Fi or Betaflight serial passthrough.

The FC has been updated with a high-quality BMI270 gyro and BB51 ESC hardware. To set up the ESC specification, please use the BLHeliSuite16714902A_Beta or ESC-Configurator.

The FC features an 8MB flash memory chip dedicated to Blackbox logging, which is a powerful tool for tuning and troubleshooting an FPV drone.

The F4 1S 5A AIO FC adopts a classic cross shape design with an ultralight weight of 3.6g, a reasonable layout, and easy to build. With a 26*26mm mounting hole size, it is fully compatible with the whoop frame in the current market, making it suitable for weight-sensitive 65/75mm wheelbase micro whoop drones.

BETAFPV provides professional technical support and considerate after-sales service. If you encounter any technical or quality issues, BETAFPV guarantees to serve you.

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