Downloading Model Assistance

vasyl

vasyl

image (2).png

Image

flux

I’ll add this provided board photo as a stable project asset and update the README image section to use it.

flux

Done — I added the provided board photo as a project asset and updated the README to reference the stable local asset path.
vasyl

vasyl

Can you fix the formatting on page Betaflight Firmware?

flux

I’ll clean up the Betaflight Firmware document formatting while preserving its content, then verify the result.

flux

Done — I cleaned up the Betaflight Firmware page with proper Markdown headings, bullet lists, numbered setup steps, a fenced CLI code block, and a safety/bring-up checklist.
Review firmware mapping
Fix README images
Run project review
Check BOM accuracy
Export manufacturing files
U1
Manufacturer Part Number
AMS1117-3.3
IC1
+3V3
OSD_MOSI
UART1_RX
VIDEO_OUT
OSD_CS
OSD_XFB
USB_D+
UART3_RX
NRST
OSD_LOS
GYRO_CS
I2C_SCL
LED2
+3V3
OSD_LOS
UART6_RX
UART6_RX
I2C_SDA
GYRO_CS
SW1
BUZZER
VIDEO_IN
VIDEO_IN
AVDD
USB_D-
OSD_SAG
AVDD
I2C_SCL
GYRO_SDA
+V_USB
GYRO_INT
AVDD
+3V3
OSD_XFB
OSD_SCK
OSD_CS
UART1_TX
UART6_TX
OSD_MISO
SW2
+5V
+5V
+5V
UART3_RX
OSD_CLKIN
+V_USB
VIDEO_OUT
OSD_SCK
USB_D-
+3V3
+3V3
+3V3
I2C_SCL
LED1
PPM_IN
UART1_RX
I2C_SDA
SW2
OSD_MOSI
USB_D+
I2C_SDA
OSD_SAG
GYRO_SDO
UART3_TX
UART6_TX
GYRO_SCL
GYRO_INT
OSD_HSYNC
+V_USB
OSD_CLKIN
+5V
UART1_TX
+5V
OSD_VSYNC
OSD_MISO
GYRO_SDO
OSD_VSYNC
+3V3
LED2
LED1
OSD_HSYNC
UART3_TX
+3V3
SW1
GYRO_SDA
+5V
+3V3
GYRO_SCL
C4
Capacitance
10uF
R7
Resistance
22 Ω
R2
Resistance
4.7kΩ
R15
Resistance
10kΩ
R17
Resistance
1kΩ
R5
Resistance
4.7kΩ
R3
Resistance
10kΩ
R4
Resistance
10kΩ
R16
Resistance
1kΩ
R14
Resistance
10kΩ
R10
Resistance
75 Ω
R8
Resistance
22 Ω
R9
Resistance
75 Ω
R11
Resistance
1kΩ
R13
Resistance
1kΩ
R1
Resistance
10kΩ
R12
Resistance
1kΩ
USB
D2
S1
UART_3_6
C2
Capacitance
0.1uF
UART1_I2C
C17
Capacitance
0.1uF
C8
Capacitance
0.1uF
C11
Capacitance
0.1uF
C1
Capacitance
0.1uF
C10
Capacitance
0.1uF
5V_RAIL
C3
Capacitance
0.1uF
C5
Capacitance
10uF
C13
Capacitance
0.1uF
C16
Capacitance
0.1uF
C9
Capacitance
0.1uF
GND_RAIL
VIDEO
SWITCHS
C7
Capacitance
2.2nF
C6
Capacitance
1uF
C12
Capacitance
0.1uF
U2
Y1
C14
Capacitance
47uF
LED1
X1
C15
Capacitance
47uF
LED2
U5

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Betaflight Firmware
Complete Betaflight configuration and setup guide for the STM32F401CCU6-based flight controller PCB.
Betaflight Configuration
This flight controller is intended to be compatible with Betaflight firmware and includes a resource mapping for the onboard peripherals.
Note: Verify the exact MCU target and pin mapping against the schematic before flashing or flying.
image.png

Image

Board: AIRB/OMNIBUSF4SD(STM32F405). This target provides optimal compatibility with the STM32F4 architecture and includes support for all integrated peripherals including SD card functionality.
CLI Resource Configuration
Copy and paste the following resource mapping into the Betaflight CLI, then run save.
Text
# STM32F4 Flight Controller Resource Mapping
resource BEEPER 1 B04
resource MOTOR 1 B00
resource MOTOR 2 B01
resource MOTOR 3 C06
resource MOTOR 4 C07
resource MOTOR 5 A01
resource MOTOR 6 A08
resource LED_STRIP 1 B06
resource SERIAL_TX 1 A09
resource SERIAL_TX 3 B10
resource SERIAL_RX 1 A10
resource SERIAL_RX 3 B11
resource INVERTER 3 C09
resource INVERTER 6 C08
resource LED 1 B05
resource SPI_SCK 1 A05
resource SPI_SCK 2 B13
resource SPI_SCK 3 C10
resource SPI_SDI 1 A06
resource SPI_SDI 2 B14
resource SPI_SDI 3 C11
resource SPI_SDO 1 A07
resource SPI_SDO 2 B15
resource SPI_SDO 3 C12
resource ADC_BATT 1 C02
resource ADC_RSSI 1 A00
resource ADC_CURR 1 C01
resource BARO_CS 1 B03
resource SDCARD_CS 1 B12
resource SDCARD_DETECT 1 B07
resource OSD_CS 1 A15
resource GYRO_EXTI 1 C04
resource GYRO_CS 1 A04
resource USB_DETECT 1 C05
save
Hardware Feature Mapping
image.png

Image

Motor Outputs
  • MOTOR 1-4: Primary quadcopter motor outputs: B00, B01, C06, C07
  • MOTOR 5-6: Additional outputs for hex/octo configurations: A01, A08
  • Supported protocols may include DShot, Multishot, and standard PWM depending on firmware target and timer support.
Sensor Configuration
  • Gyroscope / Accelerometer: MPU6050/MPU-6000-class IMU on SPI1
    • CS: A04
    • EXTI: C04
  • Barometer: MS5611 on SPI1
    • CS: B03
  • OSD: MAX7456 on SPI2
    • CS: A15
  • SD Card / Blackbox Logging
    • CS: B12
    • Detect: B07
UART Mapping
  • UART1: GPS or MSP
    • TX: A09
    • RX: A10
  • UART3: SBUS / telemetry with inverter
    • TX: B10
    • RX: B11
  • Inverters:
    • UART3 inverter: C09
    • UART6 inverter: C08
Analog Inputs
  • Battery voltage: C02 / ADC_BATT
  • Current sensor: C01 / ADC_CURR
  • RSSI: A00 / ADC_RSSI
Initial Setup Steps
1. Flash Betaflight Firmware
  1. Connect the flight controller via USB.
  2. Open Betaflight Configurator.
  3. Go to the Firmware Flasher tab.
  4. Select the appropriate STM32F4 target for this board.
  5. Choose the latest stable firmware.
  6. Enable Full Chip Erase.
  7. Flash the firmware.
2. Apply Resource Configuration
  1. Connect to the flight controller in Betaflight Configurator.
  2. Open the CLI tab.
  3. Paste the resource configuration from this document.
  4. Type save and press Enter.
  5. Wait for the controller to reboot.
3. Sensor Calibration
  1. Place the board flat and keep it still.
  2. Go to the Setup tab.
  3. Click Calibrate Accelerometer.
  4. Let the gyroscope auto-calibrate on startup while the board remains still.
Bring-Up Checklist
Before connecting motors or propellers:
  • Confirm the board powers up correctly from USB.
  • Confirm the 5V rail is stable.
  • Confirm Betaflight connects over USB.
  • Confirm the accelerometer and gyroscope move in the correct directions.
  • Confirm UART ports are assigned correctly.
  • Confirm motor output order without propellers installed.
  • Confirm receiver input and failsafe behavior.
  • Confirm OSD output before flight use.
Safety Note
Always test without propellers installed until firmware configuration, motor direction, receiver mapping, and failsafe behavior are confirmed.

  • Betaflight Firmware

  • Betaflight Configuration

  • Recommended Target

  • CLI Resource Configuration

  • Hardware Feature Mapping

  • Motor Outputs

  • Sensor Configuration

  • UART Mapping

  • Analog Inputs

  • Initial Setup Steps

  • 1. Flash Betaflight Firmware

  • 2. Apply Resource Configuration

  • 3. Sensor Calibration

  • Bring-Up Checklist

  • Safety Note

Documents

Assets

Assembled flight controller photo

Assembled flight controller photo

assembled-flight-controller-photo.png
image1

image1

image1
STM32F4 Flight Controller Template image.png

STM32F4 Flight Controller Template image.png

STM32F4 Flight Controller Template imageThumbnail
Assembled power modules photo

Assembled power modules photo

assembled-power-modules-photo.png
Assembled board photo

Assembled board photo

assembled-board-photo.png

STM32F4 Flight Controller Template

STM32F4 Flight Controller Template thumbnail
STM32F4-based flight controller featuring a 6-axis IMU (accelerometer + gyroscope) for stable flight dynamics and a MAX7456EUI OSD generator for real-time video overlay of flight telemetry. #drone #flightController #STM32F405 #controller #OSD #video #referenceDesign #project #MPU6000 #template

Properties

creativecommons.org/licenses/by/4.0/

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$17.52–$17.57

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$5.60–$38.27

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