9IMOD F722 Mini Flight Stack Instruction Manual

1. Introduction

The 9IMOD F722 Mini Flight Stack is a high-performance flight control system designed for FPV racing drones. It integrates the F722 Mini Flight Controller and a 60A 4-in-1 ESC into a compact 20x20mm stack. This system supports various open-source firmwares like Betaflight, ArduPilot, and INAV, offering flexibility for advanced users. Its robust design includes large solder pads for easier assembly and features essential components like an OSD chip and barometer, ensuring reliable performance even in challenging flight conditions.

Figure 1: F722 Mini Flight Stack (Flight Controller and ESC)

2. Features

• Open-source Betaflight Flight Controller support.
• High Configuration: STM32F722RET6 master chip, ICM42688 gyroscope, BMP280 barometer.
• Optimized PCB layout for superior performance.
• Built-in OSD module for easy parameterization.
• Standard sockets and pads for versatile connectivity.
• 60A 4-in-1 ESC with high-performance MOS for excellent current resistance and durability.
• High-performance processor supporting DSHOT600 protocol.
• Supports BlueJay firmware and bidirectional DSHOT.
• Compatible with multiple open-source firmwares: ArduPilot, Betaflight, INAV.
• Supports connectivity to DJI Air Units.

Figure 2: F722 Mini Flight Controller High Configuration Overview

Figure 3: 60A 4-in-1 ESC Features Overview

3. Specifications

3.1 F722 Flight Control Specifications

Figure 4: F722 Flight Control Specifications Table

3.2 60A ESC Specifications

Figure 5: 60A ESC Specifications Table

4. Setup

4.1 Package Contents

The package includes the following items:

• 1x F722 Mini Flight Controller
• 1x 60A ESC
• 1x Package Box
• 1x TS100 GPS Connect Cable
• 1x ESC Connect Cable
• 1x R8SM Receiver Connect Cable
• 1x Analog Video Transmission Connect Cable
• 1x Camera Connect Cable
• 1x ELRS Receiver Connect Cable
• 1x Power cable with XT60 connector
• 1x 1000uF Low ESR capacitor (35V)
• 8x Silicone vibration absorbers
• 4x Screws
• 4x Hex nuts

Figure 6: Package Contents

4.2 Wiring Diagram

Refer to the detailed wiring diagrams below for proper connection of all components. Ensure correct polarity and pin assignments for camera, VTX, GPS, receiver, and motors. The flight controller features large solder pads to facilitate easier soldering, especially for beginners.

Figure 7: Mini F722 Connection Diagram

Figure 8: Detailed Wiring Diagram for F722 Mini Flight Stack

5. Operating Instructions

• Firmware: The F722 Flight Controller supports Betaflight firmware (Firmware Name: DAKEFPVF722). It is also compatible with ArduPilot and INAV open-source firmwares. The 60A ESC uses BlueJay firmware and supports Dshot300/600 motor protocols.
• Configuration: Utilize the built-in OSD module for on-screen display and parameter adjustments. Connect via the Type-C USB port to a computer for firmware flashing and configuration using the respective configurator software (e.g., Betaflight Configurator).
• RSSI: The flight controller supports RSSI (Received Signal Strength Indicator) functionality, which can be configured in your flight control software.

6. Maintenance

• Cleaning: Keep the flight stack clean and free from dust and debris. Use a soft brush or compressed air for cleaning.
• Inspection: Regularly inspect solder joints and connections for any signs of damage or corrosion.
• Storage: Store the flight stack in a dry, anti-static environment when not in use.
• Firmware Updates: Periodically check for and apply firmware updates for both the flight controller and ESC to ensure optimal performance and access to new features.

7. Troubleshooting

• No Power: Check battery connections, XT60 plug, and ensure the Lipo battery is within the 3-8S range.
• Motor Issues: Verify ESC connections to motors and flight controller. Ensure correct motor direction and protocol settings in firmware (Dshot300/600).
• No Signal from Receiver: Check receiver wiring and ensure it's bound to your transmitter. Verify receiver protocol settings in the flight controller firmware.
• OSD Not Displaying: Ensure OSD chip (AT7456E) is properly configured in the flight controller software.
• Flight Instability: Recalibrate gyroscope (ICM42688) and accelerometer. Check for loose components or vibrations. Ensure proper PID tuning.
• Connection Issues (USB): Try a different Type-C USB cable or port. Ensure drivers are correctly installed on your computer.

8. User Tips

• Soldering: The flight stack features large solder pads, making soldering easier. For best results, use a temperature-controlled soldering iron and lead-free solder.
• Vibration Damping: Utilize the provided silicone vibration absorbers during installation to minimize vibrations affecting the gyroscope and barometer, leading to more stable flight performance.
• Firmware Flashing: Always back up your current configuration before flashing new firmware. Follow official firmware flashing guides carefully.
• Power Input: Ensure your Lipo battery voltage is within the specified 3-8S range to prevent damage to the flight controller and ESC.

9. Warranty and Support

This product is covered by the standard manufacturer's warranty against defects in materials and workmanship. For technical support, firmware updates, or further assistance, please refer to the manufacturer's official website or contact their customer service. Keep your purchase receipt for warranty claims.

10. Compliance 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.