BETA FPV F411 4S 20A Toothpick Brushless Flight Controller V5 BLHeli_S (BMI270)
As a continuation of the F411 chip, the V5 FC board is upgraded from the F4 20A V3 FC board. F411 4S 20A Toothpick Brushless Flight Controller V5 adopts BMI270 gyro instead of MPU6000 on the V3 board. With built-in two plug&play ports for receiver and HD digital VTX, it is easy to install and requires less soldering work. In addition, the board is a solid value for long-lasting use due to the high-quality PCB material and improved manufacturing process.
Bullet point
- With a large soldering pad, it is easy to solder external electronics. In addition, the V5 board has plug&play ports for receiver and HD digital VTX, which requires less soldering work for convenient installation.
- High quality MOSFETs are applied to F411 4S 20A FC V5 to handle 20A continuous current and reach 25A peak current.
- The motor solder pads are reinforced by thick copper and edge plating technology, allowing for lower resistance for higher current on the motors.
- F411 4S 20A FC V5 reserves UART port layout, UART1 for RX, UART2 for DJI OSD or analog VTX, and UART6 for spare use, more convenient for pilots to solder.
- Come with 25.5*25.5mm whoop mount template, this board can be added to both toothpick drone and cinematic whoop quadcopter frame like Pavo25 and X-knight 35.
Specification
FC
- CPU: STM32F411CEU6 (100MHZ)
- Six-axis: BMI270 (SPI connection)
- Mounting size: 25.5*25.5mm (M2 anti-vibration rubber damper available)
- FC firmware: betaflight_4.3.x_BETAFPVF411
- OSD: Built-in Betaflight OSD (OSD chip: AT7456E)
- Receiver: SBUS/CRSF/DSMX Receiver
- BEC: 5V 3A
- Integrated current sensor
- Weight: 8.15 g
ESC
- ESC chip: SILABS EFM8BB21F16G-C
- Supports D-shot150, D-shot300, D-shot600, Oneshot125, Multishot, PWM
- Input voltage: 2S-4S Lipo
- Continuous current: 20A
- Peak current: 25A
- Firmware: G_H_20_REV16_7.HEX (default BLHeli_S), BLUEJAY (optional)
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Note: F411 4S 20A FC V5 is available to flash BLHeli_S and BLUEJAY ESC firmware, and comes with default BLHeliI_S firmware. The main difference is that BLUEJAY firmware supports bidirectional D-shot, while BLHeli_S does not support it.
Comparison with F411 4S 20A V3 FC
We have upgraded the F411 4S 20A V3 board to V5 by adopting BMI270 gyro instead of MPU6000 and adding some new features. The BMI270 gyro works great in most cases, especially at low frequency. Unlike the V3 board which supports JST1.25 connectors, the motor solder pads on the V5 board are only solderable and strengthened by thick copper and edge plating technology, allowing for lower resistance for higher current on the motors. In addition, the V5 FC board features high-quality material for soldering stability and durability of use. The pictures below show the difference between the two flight controllers.
Diagram for Toothpick F411 4S 20A Brushless FC V5
The board integrates 3 LEDs, including the power LED (red), the FC LED (blue) and the receiver LED.
External VTX digital RX/HD connection
F411 4S 20A FC V5 integrates Plug & Play port for external RX and HD digital VTX, and there will be a 4-pin connector for RX and a 6-pin connector for HD digital VTX in the package. So we highly recommend pilots to use the port to save the soldering work.
FC and ESC Firmware
The default firmware includes CLI dump file. But if you flash firmware from Betaflight configurator official website, you will flash CLI dump file for F411 4S 20A FC V5. We offer default firmware and CLI dump file for download.
The BMI270 gyro will need more software filters and is sensitive to high frequencies. This can be solved by adjusting the filter settings in the PID optimization. The default Betaflight or BETAFPV CLI and FC firmware dump file do not include filter settings. For pilots who want to configure it, we recommend setting the low gyro 2 to 145Hz and choosing the filter type to PT2.
F411 4S 20A FC V5 is available to flash BLHeli_S and BLUEJAY ESC firmware, and it comes with default BLHeliI_S firmware. The main difference is that BLUEJAY firmware supports bidirectional D-shot, while BLHeli_S does not support it. Here are the download links for two firmwares.
When using BLHeli_S ESC firmware, configure the settings on the BLHeli - Configurator software.
We offer BLUEJAY ESC firmware for pilots. When using BLUEJAY ESC firmware, please configure the ESC on ESC-Configurator software.
Recommend parts
- Motors: 1404 brushless motors, 1506 brushless motors
- Battery: 2S 600 mAh, 3S/4S 850 mAh,4S 750 mAh, or 4S 1000 mAh
- Frame: Pavo25 Frame, X-Knight 35 or other frames with whoop mounting pattern.
Package Included
- 1 * F411 4S 20A Toothpick V5 Brushless Flight Controller BLHeli_S (BMI270)
- 1 * Braided Cable (XT30)
- 1 * 6-pin connector for digital VTX
- 1 * 4-pin connector for RX
- 4 * M2x10 Screws
- 4 M2 nuts
- 4 * M2 Anti-vibration rubber shock absorbers
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