Product overview
The BrotherHobby Returner 3-6S F405 V2 is a flight controller for integration into a UAV electronics installation. Its architecture combines an STM32F405RET6 processor, ICM-42688 IMU, SPL06-001 barometer and AT7456E OSD. The board measures 38.5 × 38.5 mm, with a 30.5 × 30.5 mm mounting pattern and 4 mm mounting holes, and weighs 7.23 g. Its specified input range is 3S-6S, while the BEC provides 5V/2A and 9V/2A outputs. These dimensions and electrical ratings define its mounting and power integration requirements.
Connections include M1-M8 ESC outputs, a six-pin DJI connector, Type-C USB, IIC support, a CUR current measurement pad and a CC pad for Betaflight camera tuning. Telemetry interfaces comprise UART1, UART2, UART3 and UART6, with UART5 designated for ESC telemetry. Receiver support covers SBUS, IBUS, DSM2/X, TBS and CRSF. The configuration also supports an external LED, buzzer, RSSI and black box recording with a stated capacity of 16M. Its specified firmware target is Betaflight_4.3.2_STM32F405; the product is a controller component for aircraft integration.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity | BrotherHobby Returner 3-6S F405 V2 Betaflight flight controller |
| Processor | STM32F405RET6 |
| Input power | 3S-6S |
| Board dimensions | 38.5 × 38.5 mm |
| Mounting dimensions and hole diameter | 30.5 × 30.5 mm mounting pattern; 4 mm hole diameter |
| IMU | ICM-42688 |
| OSD | AT7456E |
| Barometer | SPL06-001 |
| Black box support | Supported |
| Black box capacity | 16M |
| BEC outputs | 5V/2A and 9V/2A |
| DJI connection | 6-pin connector |
| IIC | Supported |
| Telemetry interfaces | UART1, UART2, UART3, UART6; UART5 for ESC telemetryUART5 is designated for ESC telemetry. |
| USB port | Type-C |
| Current measurement connection | CUR pad |
| ESC outputs | M1-M8 |
| LED support | External LED supportedExternal LED. |
| Betaflight camera tuning connection | CC pad |
| Target firmware | Betaflight_4.3.2_STM32F405 |
| Receiver protocol support | SBUS, IBUS, DSM2/X, TBS, CRSF |
| Buzzer support | Yes |
| RSSI support | Yes |
| Weight | 7.23 g |
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