BETAFPV F405 4S 20A Toothpick Brushless Flight Controller V5 ICM42688 for 4-inch FPV Drones

Introduction

The BETAFPV F405 4S 20A Toothpick Brushless Flight Controller V5 is an advanced FC designed for agile FPV toothpick drones. Building upon the V4 model, this V5 iteration integrates a new ICM42688 gyroscope and updated ESC chip with BLUEJAY ESC firmware, enabling bi-directional D-Shot for superior control and telemetry. Its refined layout simplifies installation and minimizes the risk of solder bridges, making it an ideal choice for builders seeking reliability and performance in compact FPV setups.

Key Advantages

• High-performance ICM42688 gyroscope for stable flight control.
• BLUEJAY ESC firmware support for bi-directional D-Shot.
• Integrated OSD with AT7456E chip for essential flight data.
• Multiple receiver protocol support (SBUS/CRSF/DSMX).
• Plug-and-play ports for easy HD Digital VTX and receiver connection.
• Optimized layout for simplified soldering and improved reliability.
• Compact 25.5x25.5mm mounting pattern for toothpick builds.
• Supports 2S-4S LiPo input with 20A continuous current handling.

Technical Specifications

• Flight Controller CPU: STM32F405RGT6
• Gyro: ICM42688 (SPI Connection)
• Mounting Size: 25.5x25.5 mm (M2 anti-vibration rubber damper compatible)
• FC Firmware: betaflight_4.3.1_BETAFPVF405
• OSD: Built-in Betaflight OSD (OSD Chip: AT7456E)
• Receiver Support: SBUS/CRSF/DSMX
• BEC: 5V 3A
• Current Sensor: Built-in
• Weight: 8.35g
• ESC Chip: SILABS EFM8BB21F16G-C
• ESC Protocol Support: D-shot150, D-shot300, D-shot600, Oneshot125, Multishot, PWM
• Input Voltage: 2S-4S LiPo
• Continuous Current: 20A
• Peak Current: 25A
• ESC Firmware: G_H_20_48_v0.16.HEX (BLUEJAY default), BLHeli_S (optional)

Applications

This flight controller is specifically designed for lightweight FPV toothpick drones, ideal for freestyle flying, cinematic FPV, and racing applications where agility and responsiveness are crucial. It's also suitable for custom 4-inch builds requiring a compact and powerful FC.

Compatibility

Compatible with SBUS, CRSF, and DSMX receivers. Supports 2S-4S LiPo batteries. Features plug-and-play connectors for HD Digital VTX systems. Mounts using a 25.5x25.5mm pattern, compatible with M2 dampers. Fits frames like the X-Knight 4-inch, TWIG MUTANT, and 95X V3.

FAQ

What is the BETAFPV F405 4S 20A Toothpick Brushless Flight Controller V5 best suited for?

This flight controller is ideal for building lightweight FPV toothpick drones, including 4-inch models like the X-Knight and TWIG MUTANT. It excels in freestyle, cinematic, and racing applications where agility and precise control are paramount.

What makes the V5 version of the BETAFPV F405 FC stand out?

The V5 features an upgraded ICM42688 gyroscope for improved stability and uses BLUEJAY ESC firmware, enabling bi-directional D-Shot for enhanced performance feedback. It also boasts a refined layout for easier soldering and reduced risk of short circuits.

What receiver protocols does the BETAFPV F405 V5 support?

This flight controller supports popular receiver protocols including SBUS, Crossfire (CRSF), and DSMX, offering flexibility for various remote control systems.

What are the power and current handling capabilities of this FC?

The BETAFPV F405 V5 is designed for 2S to 4S LiPo batteries and can handle a continuous current of 20A, with a peak current of 25A, making it suitable for powerful brushless motors in its class.

Where can I buy the BETAFPV F405 4S 20A Toothpick Brushless FC with fast delivery?

You can order the BETAFPV F405 4S 20A Toothpick Brushless FC V5 from HTDRONE. We offer fast delivery within Poland and reliable shipping options to Ukraine via Nova Poshta, as well as worldwide delivery via DHL.