Foxeer Reaper F745 AIO

The Foxeer Reaper F745 AIO V2/V3/V4 features an F7 autopilot and an integrated 45A 2-6S BLHeli_S 4-in-1 Bluejay ESC.

Where To Buy

Foxeer

Specifications

• Processor

  • STM32F745VG ARM (216MHz), 1MB Flash

  • AT7456E OSD

  • 16Mbit Flash for datalogging

• Sensors

  • (Accelerometer/Gyro) BMI-270 IMU on V2, ICM-42688 on V3, MPU6000 on V4

  • Voltage & 130A Current sensor

• Power

  • 7.4V ~ 25V DC input power (2-6S)

  • 5V 2.5A BEC for peripheral

• Interfaces

  • 5x UARTS

  • 5x PWM outputs, first 4 are internally connected to 4in1 40A BLHeli32 ESC. 5th used for LED PWM output

  • I2C port for external compass, airspeed sensor, etc.

  • Micro USB port

  • Camera input/ VTX output

  • DJI Goggle connector

• Integrated ESCs

  • 4 integrated BLHeli_S ESCs

  • Firmware - BlueJay

  • 2S-6S input voltage, 45A burst current

  • DShot 300/600 capable

• Size and Dimensions

  • 32.5mm x 32.5mm (25.5 x 25.5mm mount pattern)

  • 8.6g

Pinouts

Default UART order

default protocols shown

• SERIAL0 = console = USB

• SERIAL1 = Telemetry 1 = USART1 (RX1 used to for SBUS in DJI connector, protocol parameter must be changed)

• SERIAL2 = RC Input = USART2 (Defaults to RC input protocol) DMA-eanbled

• SERIAL3 = Telemetry 1/USER = UART3

• SERIAL4 = Telemetry 2/USER = UART4

• SERIAL5 and SERIAL 6 are not available

• SERIAL7 = GPS = USART7 (DMA-enabled)

RC Input

RC input is configured on the RX2 (UART2_RX) pin. It supports all RC protocols except PPM. See Radio Control Systems for details for a specific RC system. SERIAL 2_PROTOCOL is set to “23”, by default, to enable this.

• SBUS/DSM/SRXL connects to the RX2 pin but SBUS requires that the SERIAL2_OPTIONS be set to “3”.

• FPort requires connection to TX2 and SERIAL2_OPTIONS be set to “7”.

• CRSF also requires a TX2 connection, in addition to RX2, and automatically provides telemetry. Set SERIAL2_OPTIONS to “0”.

• SRXL2 requires a connection to TX2 and automatically provides telemetry. Set SERIAL2_OPTIONS to “4”.

Any UART can be used for RC system connections in ArduPilot also, and is compatible with all protocols except PPM. See Radio Control Systems for details.

PWM Output

The autopilot supports 5 PWM outputs. The first four outputs are directly connected to the integrated ESC. The 5th is defaulted for NeoPixel LED use.

The PWM are in 2 groups: 1-4, and 5

Channels within the same group need to use the same output rate and protocol. If any channel in a group uses DShot then all channels in the group need to use DShot. Outputs 1-4 support bidirectional DShot.

Note

for users migrating from BetaflightX quads, the first four outputs M1-M4 have been configured for use with existing motor wiring using these default parameters:

• FRAME_CLASS = 1 (Quad)

• FRAME_TYPE = 12 (BetaFlightX)

Integrated ESC Setup

By default the following parameters are setup for a Copter vehicle to give Bi-Directional DShot600 protocol and BLHeli Passthrough capability to the first four outputs which drive the ESC:

• SERVO_BLH_BDMASK = 15 (outputs 1-4 are bi-directional BLHeli)

• SERVO_BLH_AUTO = 1 (enable automatically enabling BLHeli passthrough on outputs 1 -4)

• MOT_PWM_TYPE = 6 (set DShot 600 protocol)

Note

for QuadPlane Copter Tailsitters, set Q_M_PWM_TYPE = 6, since MOT_PWM_TYPE only applies to Copters.

Neopixel Output

The LED pin is PWM output 5 on pad and is default setup for use with a NeoPixel 4 led string for notifications.

Battery Monitor

The board has a built-in voltage and current sensors.

The correct battery monitor parameters are:

• BATT_MONITOR = 4

• BATT_VOLT_PIN = 13

• BATT_VOLT_MULT ~ 10.9

• BATT_CURR_PIN = 12

• BATT_AMP_PERVLT = 100

These are set by default in the firmware and shouldn’t need to be adjusted.

Compass

The ReaperF745v2 does not have a builtin compass, but you can attach an external compass using I2C on the SDA and SCL pads.

Barometer

The ReaperF745v2 does not have a builtin barometer, but you can attach an external barometer using I2C on the SDA and SCL pads or use GPS as the EKF3 Z source. The board will boot without either, but only non altitude information requiring modes can be used.

Loading ArduPilot onto the board

Initial firmware load can be done with DFU by plugging in USB with the bootloader button pressed. Then you should load the “with_bl.hex” firmware, using your favourite DFU loading tool.

Once the initial firmware is loaded you can update the firmware using any ArduPilot ground station software. Updates should be done with the xxxxxxxxxx.apj firmware files.

Firmware

Firmware for this board can be found here in sub-folders labeled “ReaperF745”.