Based on the F405 2-4S 20A Brushless Flight Controller V4
The F405 4S 20A Toothpick Brushless Flight Controller V5 applies a new ICM42688 gyro and ESC chip that comes with BLUEJAY ESC firmware, supporting bidirectional D-shot. The V5 board is made with a rational layout for easy solder and preventing solder from jumping to another pad and shorting components.
Bullet Point
- The flight controller board is made with a rational layout and larger solder pads for easy soldering of external electronics.
- Capable of handling 20A continuous current and reaching 25A peak current due to high-quality MOSFETs.
- Soldering motor wires to the pad directly allows lower resistance for more current on motors.
- UART ports layout reserved for convenient soldering (UART3 for RX, UART4 for HD digital VTX, UART6 for Analog VTX, and UART1 for spare use).
- 25.5*25.5mm whoop mounting pattern for compatibility with toothpick drones and cinematic whoop quadcopter frames like Pavo25 and X-knight 35.
Specifications
Flight Controller
- CPU: STM32F405RGT6
- Six-Axis: ICM42688 (SPI connection)
- Mounting Size: 25.5*25.5mm (M2 Anti-vibration rubber damper available)
- FC Firmware: betaflight_4.3.1_BETAFPVF405
- OSD: Built-in Betaflight OSD (OSD chip: AT7456E)
- Receiver: SBUS/CRSF/DSMX Receiver
- BEC: 5V 3A
- Built-in current sensor
- Weight: 8.35g
ESC
- ESC Chip: SILABS EFM8BB21F16G-C
- Support D-shot150, D-shot300, D-shot600, Oneshot125, Multishot, PWM
- Input voltage: 2S-4S Lipo
- Continuous current: 20A
- Peak current: 25A
- Firmware: G_H_20_48_v0.16.HEX (Default BLUEJAY), BLHeli_S (Optional)
Note: F405 4S 20A FC V5 is available to flash both BLHeli_S and BLUEJAY ESC firmware and it comes with default BLUEJAY firmware. The main difference is that the BLUEJAY firmware supports bidirectional D-shot, while BLHeli_S does not support it.
Comparison to F405 2-4S 20A V4 FC
We upgraded the F405 2-4S 20A V4 board to V5 by adopting ICM42688 gyro instead of MPU6000 and adding some new features. ICM42688 gyro works great in most cases. Except for the gyro, the V5 board comes with a completely new ESC firmware that supports bidirectional D-shot. The way to connect motors changed and is solderable only on the V5 board. Besides, the V5 FC board features high-quality material for stability and durability.
The below pictures show the difference between the two flight Controllers.
Diagram for Toothpick F405 20A AIO FC V5
The board integrates 2 LEDs, including the Power LED (Red) and the FC LED (Blue).
| LED |
Status |
Description |
| Power LED (Red) |
Solid |
Power on |
| FC LED (Blue) |
Solid |
Motor Armed |
Connecting External RX/HD Digital VTX
F405 4S 20A FC V5 integrates the Plug & Play port for the 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. Thus, we highly recommend pilots use the port to save the solder work.
FC & ESC Firmware
The default firmware is including CLI dump file. But if you flash firmware from the Betaflight configurator official site, please flash a CLI dump file for F405 4S 20A FC V5. We offer the default firmware and CLI dump file to download.
Download the FC default firmware betaflight_4.3.1_BETAFPVF405 and CLI dump file.
F405 4S 20A FC V5 is available to flash both BLHeli_S and BLUEJAY ESC firmware and it comes with default BLUEJAY firmware. The main difference is that the BLUEJAY firmware supports bidirectional D-shot, while BLHeli_S does not support it. Here are the download links for two firmware.
Download the BLUEJAY ESC firmware BLUEJAY ESC firmware
Download the ESC - Configurator ESC - Configurator
Download the Bluejay Configurator Bluejay Configurator
We offer BLHeli_S ESC firmware for pilots. Please configure the BLHeli_S ESC firmware through BLheliSuite, BLHeli - Configurator, or ESC - Configurator software.
Download the BLHeli_S ESC firmware BLHeli_S ESC firmware
Download the BLHeliSuite16714902a BLHeliSuite16714902a
Download the BLHeli - Configurator BLHeli - Configurator
Download the ESC - Configurator ESC - Configurator
Recommend Parts
- Motors: 1404 Brushless Motors, 1506 Brushless Motors
- Battery: 2S 600mAh, 3S/4S 850mAh, 4S 750mAh, or 4S 1000mAh
- Frame: Pavo25 Frame, X-knight 35, or other frames with whoop mounting pattern.
Package
- 1 * F405 4S 20A Toothpick Brushless Flight Controller V5 BLHeli_S (ICM42688)
- 1 * Cable Pigtail (XT30)
- 1 * 6-Pin Connector for Digital VTX
- 1 * 4-Pin Connector for RX
- 4 * M2x12 Screws
- 8 * M2 Nuts
- 4 * M2 Anti-vibration Rubber Dampers
