9IMOD F722 Flight Stack Instruction Manual

1. Introduction

The 9IMOD F722 Flight Stack is a high-performance integrated solution designed for FPV Racing Drones. It combines an F722 Flight Controller with either a 55A or 60A 4-in-1 Electronic Speed Controller (ESC), offering robust control and power delivery for demanding flight applications. This stack features an ICM42688 gyroscope, a powerful STM32F722RET6 master chip, and supports 3-8S LiPo batteries (3-6S for 55A ESC variant). It is compatible with open-source Betaflight firmware and BlueJay firmware for the ESC, including bidirectional DSHOT.

Key Features:

• Open-source Betaflight Flight Controller support.
• High Configuration: STM32F722RET6 master processor, ICM42688 gyroscope, BMP280 Barometer, and AT7456E OSD chip.
• Optimized PCB layout for enhanced performance and reliability.
• Built-in OSD module for easy parameterization.
• Standard sockets and pads for versatile connectivity.
• 4-in-1 ESC with high-performance MOS for excellent current resistance and durability.
• Supports DSHOT300/600 motor protocols and BlueJay firmware with bidirectional DSHOT.
• Large solder pads, strategically placed away from components for easier soldering.

2. Package Contents

Please verify that all items listed below are included in your package. The exact contents may vary slightly depending on the ESC variant (55A or 60A).

For F722 Flight Control + 55A ESC:

• F722 Flight Controller x1
• 55A ESC x1
• Package Box x1
• TS100 GPS Connect Cable x1
• ESC Connect Cable x1
• R8SM Receiver Connect Cable x1
• Analog Video Transmission Connect Cable x1
• Camera Connect Cable x1
• ELRS Receiver Connect Cable x1
• Power cable + XT60 x1
• Low ESR capacitor (1000uF 35V) x1
• Silicone vibration absorber x8
• Screw x4
• Hex nut x4

For F722 Flight Control + 60A ESC:

• F722 Flight Controller x1
• 60A ESC x1
• Package Box x1
• TS100 GPS Connect Cable x1
• ESC Connect Cable x2
• R8SM Receiver Connect Cable x1
• Analog Video Transmission Connect Cable x1
• Camera Connect Cable x1
• ELRS Receiver Connect Cable x1
• Power cable + XT60 x1
• Low ESR capacitor (1000uF 35V) x1
• Silicone vibration absorber x8
• Screw x4
• Hex nut x4

3. Specifications

F722 Flight Control Parameters:

55A ESC Parameters:

60A ESC Parameters:

4. Setup and Wiring

This section provides general guidance for connecting your F722 Flight Stack to various components of your FPV drone. Always refer to the specific pinout diagrams and ensure correct polarity before powering on your system.

General Wiring Diagram:

Detailed Wiring Diagram with Peripherals:

Installation Notes:

• The Flight Stack has an installation hole position of 30.5x30.5mm/M4.
• Use the provided silicone vibration absorbers to minimize motor and frame vibrations from reaching the flight controller's gyroscope.
• Ensure all connections are secure and correctly oriented before applying power.
• The large solder pads are designed to facilitate easier soldering, especially for beginners.

5. Firmware and Configuration

The F722 Flight Controller supports Betaflight firmware, and the ESCs (55A/60A) support BlueJay firmware.

Flight Controller Firmware (Betaflight):

• The recommended firmware for the F722 Flight Controller is Betaflight.
• The specific firmware target name is DAKEFPVF722.
• Connect the flight controller to your computer via the Type-C USB port.
• Use the Betaflight Configurator software to flash the firmware and configure settings.
• Refer to the official Betaflight documentation for detailed flashing and configuration instructions.

ESC Firmware (BlueJay):

• The 4-in-1 ESCs (55A/60A) support BlueJay firmware.
• BlueJay firmware enables features like bidirectional DSHOT, which can improve flight performance and motor telemetry.
• Configuration and flashing of BlueJay firmware typically require specific tools and software. Consult BlueJay firmware documentation for detailed procedures.

6. Operating Instructions

Once the flight stack is correctly installed and configured with the appropriate firmware, you can proceed with operating your FPV drone.

1. Pre-Flight Checks: Before each flight, ensure all connections are secure, propellers are correctly installed, and battery is fully charged.
2. Arming the Drone: Follow your Betaflight configuration for arming procedures (e.g., stick commands, switch assignment). Ensure you are in a safe area before arming.
3. Flight Modes: Configure various flight modes (e.g., Acro, Angle, Horizon) in Betaflight to suit your flying style and experience level.
4. OSD Display: The built-in OSD (On-Screen Display) will provide real-time flight data on your FPV goggles or monitor. Customize the OSD layout in Betaflight Configurator to show essential information like battery voltage, flight time, and RSSI.
5. Disarming: Always disarm your drone immediately after landing or in case of an emergency.

7. Maintenance

• Regular Inspection: Periodically inspect the flight stack for any signs of physical damage, loose connections, or corrosion.
• Cleaning: Keep the flight controller and ESC clean from dust, dirt, and debris. Use a soft brush or compressed air. Avoid using liquids directly on the electronics.
• Firmware Updates: Regularly check for new firmware releases for Betaflight and BlueJay. Updates often include performance improvements, bug fixes, and new features.
• Capacitor Check: Ensure the electrolytic capacitor is securely attached and shows no signs of bulging or leakage.
• Vibration Dampening: Verify that the silicone vibration absorbers are intact and effectively dampening vibrations. Replace if worn or damaged.

8. Troubleshooting

• No Power: Check battery connection, XT60 connector, and ensure no short circuits. Verify power output from the ESC.
• No Motor Spin: Ensure ESCs are properly calibrated, motors are connected correctly, and motor protocol (Dshot) is configured in Betaflight. Check for continuity in motor wires.
• Flight Controller Not Connecting to PC: Try a different USB cable, ensure Betaflight Configurator is up-to-date, and check device manager for driver issues.
• Unstable Flight: Re-check motor direction and propeller orientation. Verify PID tuning in Betaflight. Ensure no excessive vibrations are reaching the gyroscope.
• OSD Not Displaying: Check OSD settings in Betaflight Configurator. Ensure video signal is correctly wired through the flight controller.
• Receiver Not Responding: Verify receiver wiring (SBUS, ELRS, etc.) and ensure the correct receiver protocol is selected in Betaflight. Check binding with your radio transmitter.

9. User Tips

• Soldering Practice: If you are new to soldering, practice on scrap components before working on your flight stack. The large pads on this board are designed to be forgiving.
• Heat Shrink: Use heat shrink tubing on exposed solder joints and connections to prevent accidental shorts.
• Cable Management: Organize your wiring neatly to prevent interference and make troubleshooting easier.
• Backup Configuration: Always save a backup of your Betaflight and BlueJay configurations after successful setup.
• Community Resources: Utilize online FPV communities and forums for additional support, tips, and shared configurations.

10. Safety Information

⚠ WARNING: This product can expose you to chemicals including phthalates (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

• Always handle electronic components with care to avoid electrostatic discharge.
• Ensure proper ventilation when soldering.
• Never operate your FPV drone in unsafe conditions or near people, animals, or property.
• Always remove propellers before connecting the battery for configuration or testing.
• Use appropriate safety gear, such as safety glasses, when working with FPV drones.

11. Warranty and Support

For technical support, troubleshooting assistance, or warranty inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.