1. Introducció
The MATEKSYS F405-WMO is a high-performance flight controller designed for RC FPV fixed-wing drones. It integrates a powerful STM32F405RGT6 microcontroller, ICM42688P IMU, built-in OSD, and an SD card slot for Blackbox logging. This manual provides essential information for setting up, operating, and maintaining your F405-WMO flight controller to ensure optimal performance and reliability.
Figure 1: MATEKSYS F405-WMO Flight Controller
2. Especificacions
2.1 FC Specifications
- MCU: STM32F405RGT6, 168MHz, 1MB Flash
- IMU: ICM42688-P
- Baròmetre: SPL06-001
- OSD: AT7456E
- Blackbox: SD card slot
- UARTs: 4x
- PWM outputs: 10x
- I2C: 1x
- ADC: 2x (VBAT, Current)
- Spare PINIO: 1x
- Vbat output ON/OFF control
- USB/Beep Extender: Type-C (USB2.0)
- SBUS input: Built-in inverter on UART2-RX
2.2 Especificacions de potència
- Entrada Voltage: 5.4~30V DC (2~6S LiPo)
- Current Sense: 132A (INAV Scale 250, ArduPilot 40A/V)
- PDB/Current sense resistor: 90A continuous, 132A burst
- BEC 5V(4v5): 2A for FC & Peripherals
- BEC Vx: 4.5A continuous (7A peak) for servos, 5V/6V option
- Filtered Vbat for VTX and camera
- LDO: 3.3V 200mA
- Voltage Sensor: 1k:20k
2.3 FC Firmware
- ArduPilot: MatekF405-TE
- INAV: MATEKF405TE_SD
2.4 Especificacions físiques
- Mides: 32 x 22 x 12.7 mm
- Pes: 9 g
Figure 2: F405-WMO vs F405-WMN Specification Comparison
3. Contingut del paquet
El paquet inclou els articles següents:
- 1x F405-WMO Flight Controller
- 1x USB (Type-C) / Beep (Passive buzzer) Extender
- 1x 20cm JST-SH-6P cable for USB extender
- Dupont 2.54 pins (Board is shipped unsoldered)
4. Physical Layout and Dimensions
The F405-WMO features a compact, stacked design. Understanding the layout is crucial for proper installation and wiring.
Figura 3: superior View with Dimensions (32mm x 22mm)
Figure 4: Angled and Side Views with Height (12.7mm)
Figure 5: Detailed Top and Bottom Views of F405-WMO and F405-WMN
Figura 6: Detallada Views of F405-WMO Board Components
5. Configuració i cablejat
Proper wiring is critical for the safe and correct operation of your flight controller. Refer to the diagram below for typical connections in a fixed-wing setup.
Figure 7: Fixed Wing (Plane) Wiring Diagram for F405-WMO
5.1 Key Connections
- Battery (BAT+) / ESC: Connect your main flight battery (2-6S LiPo) to the BAT+ pads. ESCs (Electronic Speed Controllers) for motors are connected to S1, S2, S3, etc., as per your motor configuration. Ensure correct polarity.
- Receptor (RX): Connect your receiver (e.g., SBUS, CRSF) to the appropriate UART RX pad. UART2-RX has a built-in inverter for SBUS.
- GPS: Connect GPS module to a spare UART (e.g., UART4(SERIAL4)). Ensure SDA/SCL for compass if applicable.
- Camera (CAM): Connect your FPV camera to the CAM input.
- Transmissor de vídeo (VTX): Connect your VTX to the VTX output. The FC provides filtered Vbat for VTX and camera.
- OSD: The AT7456E OSD is integrated.
- Zumbador: Connect a passive buzzer to the dedicated pads or use the USB/Beep Extender.
- USB: Use the provided USB Type-C extender for connecting to your computer for firmware flashing and configuration.
- LED: The board has an LED indicator (Red for 3.3V, Green for FC Status).
5.2 Instruccions de soldadura
The board is shipped unsoldered. Use appropriate soldering techniques to connect the Dupont 2.54 pins and other components. Ensure clean and strong solder joints to prevent intermittent connections or shorts.
6. Firmware Flashing and Configuration
The F405-WMO supports both ArduPilot and INAV firmware. Choose the firmware that best suits your application.
6.1 Flashing Firmware
- Download the latest firmware for your chosen flight software (ArduPilot: MatekF405-TE or INAV: MATEKF405TE_SD) from the official Matek Systems website or the respective firmware project pages.
- Connect the F405-WMO to your computer using the USB Type-C extender.
- Enter DFU mode by holding the DFU button while plugging in the USB, or by using the DFU utility in your flight software configurator.
- Use the appropriate configurator software (e.g., INAV Configurator, Mission Planner for ArduPilot) to flash the downloaded firmware.
6.2 Configuració inicial
After flashing, connect to the configurator software and perform the following initial steps:
- Calibració del sensor: Calibrate the accelerometer, gyroscope, and compass (if connected).
- Configuració del receptor: Configure your receiver type (SBUS, CRSF, etc.) and ensure all channels respond correctly.
- Configuració del mode: Define flight modes (e.g., Manual, Stabilize, RTH) according to your preferences.
- Calibració ESC: Calibrate your ESCs for proper motor control.
- Configuració de l'OSD: Customize the On-Screen Display to show desired flight data.
- A prova de fallades: Configure failsafe behavior to ensure your drone returns home or lands safely in case of signal loss.
7. Instruccions de funcionament
Once configured, the F405-WMO will manage your fixed-wing drone's flight characteristics. Always perform pre-flight checks.
- Comprovacions prèvies al vol: Comproveu el volum de la bateriatage, control surface movement, GPS lock (if applicable), and OSD data.
- Armat: Arm the motors using your configured switch or stick command.
- Enlairament: Hand launch or use a runway for takeoff, depending on your aircraft type and setup.
- Modes de vol: Switch between configured flight modes as needed for different flight phases (e.g., manual for acrobatics, RTH for emergencies).
- Aterratge: Execute a controlled landing, disarming motors only after the aircraft has come to a complete stop.
8. Solució De Problemes
Aquesta secció tracta problemes comuns que podeu trobar.
| Problema | Causa possible | Solució |
|---|---|---|
| No power to FC | Incorrect battery connection, faulty BEC, short circuit. | Check battery polarity and connections. Inspect for shorts. Verify BEC output voltage. |
| No receiver signal | Incorrect wiring, wrong UART selected, receiver not bound, inverted signal. | Verify receiver wiring to correct UART. Check receiver binding. Ensure SBUS inverter is enabled if needed. |
| Motors not spinning/calibrating | Incorrect ESC wiring, ESC calibration failed, motor direction wrong. | Check ESC connections to PWM outputs. Re-calibrate ESCs. Verify motor direction in configurator. |
| Incorrect sensor readings | Improper calibration, magnetic interference, faulty sensor. | Re-calibrate all sensors. Keep FC away from magnetic sources (e.g., power wires). |
| OSD not displaying | Incorrect video wiring, OSD disabled in firmware, PAL/NTSC mismatch. | Check camera/VTX wiring. Enable OSD in configurator. Ensure correct video format. |
9. Manteniment
Regular maintenance ensures the longevity and reliability of your flight controller.
- Inspecció visual: Periodically check for loose wires, damaged components, or signs of corrosion.
- Neteja: Keep the board free from dust, dirt, and moisture. Use compressed air or a soft brush.
- Integritat de la connexió: Ensure all connectors are securely seated and solder joints are intact.
- Actualitzacions de firmware: Regularly check for and apply firmware updates to benefit from new features and bug fixes.
10. Consells d'usuari
Here are some tips to enhance your experience with the F405-WMO:
- Prova abans del vol: Always perform ground tests after any changes to wiring or configuration.
- Muntatge segur: Mount the flight controller securely to minimize vibrations, which can affect IMU performance.
- Gestió de cables: Organize and secure all wiring to prevent interference and accidental disconnections.
- Configuració de còpia de seguretat: Save your flight controller configuration settings regularly.
- Suport comunitari: Engage with the Matek Systems community forums or INAV/ArduPilot communities for advanced tips and troubleshooting.
11. Support and Firmware Resources
For the latest firmware, detailed wiring diagrams, and additional support, please visit the official Matek Systems website or the respective firmware project pages:
- Matek Systems Official Weblloc: [Refer to Matek Systems official website for product page and downloads]
- INAV Project: [Refer to INAV official documentation]
- ArduPilot Project: [Refer to ArduPilot official documentation]
Always ensure you are using the correct firmware target for your F405-WMO board.
