Product overview
The RCTimer BeeRotorF4 BetaFlight Flight Controller with BFOSD is a flight-control electronics board with a 35x35mm footprint and 30x30mm mounting-hole layout. Its architecture combines an STM32F405RG MCU, an SPI-connected IMU with interrupt support, and a BMP280 barometer connected through I2C. The IMU designation is MPU6050A, described as the new name of ICM-20689. BFOSD provides the specified on-screen display, while an on-board voltage divider supplies voltage sensing. These components define the controller’s processing, sensing and display configuration.
Integration provisions include three hardware UARTs, VCP support and a MicroSD socket for Blackbox storage. Port sharing matters when allocating connections: PPM shares UART2, and FrSky/SmartPort uses UART3. The transponder and LED-strip functions also share a connection, so their allocation needs to be considered together. The controller additionally specifies three hardware ISP interfaces, one DFU button and one status LED. Its physical integration space is defined by the board dimensions and mounting-hole layout.
Specifications
| Specification | Value & conditions |
|---|---|
| Dimensions | 35x35mm |
| Mounting holes | 30x30mm |
| MCU | STM32F405RG |
| IMU | MPU6050A (SPI) with Interrupt; described as the new name of ICM-20689 |
| Barometer | BMP280 via I2C |
| VCP | Yes |
| On-screen display | BFOSD |
| Hardware ISP | 3 |
| Hardware UARTs | 3 |
| Blackbox storage interface | MicroSD socket |
| PPM/UART sharing | UART2 |
| FrSky/SmartPort interface | UART3 |
| Voltage sensor | On-board voltage divider |
| Transponder/LED-strip sharing | Yes |
| Button | 1 DFU button |
| Status LEDs | 1 |
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