1. Introduction
The 9IMOD F722 Mini Flight Stack is a high-performance flight controller (FC) and electronic speed controller (ESC) combination designed for advanced RC FPV racing drones. This compact stack integrates an F722 flight controller with a powerful 60A 4-in-1 ESC, offering robust control and power delivery for demanding flight applications. It supports a wide range of battery configurations and is compatible with popular open-source firmware.
Video: Overview of the F722 Mini Flight Stack components.
2. Package Contents
Please inspect the package contents upon receipt to ensure all items are present and undamaged. The standard package for the F722 Mini Flight Stack includes:
- 1x F722 Mini Flight Controller
- 1x 60A 4-in-1 ESC
- 1x Low ESR Capacitor (1000uF 35V)
- 1x XT60 Power Cable
- 1x ESC Connect Cable
- 1x TS100 GPS Connect Cable
- 1x R8SM Receiver Connect Cable
- 1x Analog Video Transmission Connect Cable
- 1x Camera Connect Cable
- 1x ELRS Receiver Connect Cable
- 8x Silicone Vibration Absorbers
- 4x Screws
- 4x Hex Nuts
Image: Detailed diagram illustrating the F722 Mini Flight Control and 60A ESC package contents.
3. Specifications
3.1. F722 Mini Flight Controller
| Feature | Specification |
|---|---|
| Master Chip | STM32F722RET6 |
| Gyroscope | ICM42688 |
| Battery Input | 3-8S LiPo |
| USB Port | Type-C |
| Barometer | BMP280 |
| OSD Chip | AT7456E |
| Bluetooth | Not Supported |
| RSSI Support | Yes (marked as RSSI) |
| Supported FC Firmware | Betaflight, INAV |
| Firmware Name | DAKEFPVF722 |
| Direct Insertion Solder-Free Interface | Receiver 4P, Simulated Camera 3p-1.25, Digital Image Transmission 6p, Simulated Image Transmission 4p, Brushless ESC 8p |
| Installation Hole Position | 20x20mm / M4 |
| Dimensions | 29mm x 29mm x 9mm |
| Weight (Bare Board) | 8g |
| DJI Air Unit Connection | Allows connection to DJI O4 |
| GPS Module Connection | Requires u-blox protocol support |
Image: Detailed view of the F722 Mini Flight Control board.
3.2. 60A 4-in-1 ESC
| Feature | Specification |
|---|---|
| MCU | EFM8BB21F16G-C-QFN20R |
| Continuous Current | 60A x 4 |
| Transient Current | 65A (10S) |
| Program | BlueJay |
| MOSFET | 5C430 |
| TVS Protection Diode | Yes |
| Electrolytic Capacitor | 1000uF Low ESR Capacitor |
| Motor Protocol | Dshot300/600 |
| Battery Input | 3-8S LiPo |
| Ammeter | Support |
| Power Output | VBAT |
| Installation Hole Position | 20x20mm / M4 |
| Dimensions | Length 43mm x Width 37mm x Height 7mm |
| Weight (Bare Board) | 12g |
Image: Detailed view of the 60A ESC board.
4. Setup and Installation
The F722 Mini Flight Stack is designed for a 20x20mm mounting pattern with M4 screws. Ensure proper insulation and secure mounting to prevent short circuits and vibration-induced issues.
4.1. Wiring Diagrams
Carefully follow the wiring diagrams below for correct connection of the Flight Controller and ESC to your drone's components. Incorrect wiring can lead to damage or malfunction.
Image: Wiring diagram for the 60A ESC, showing connections for motors and power.
Image: Connection diagram for the Mini F722 Flight Controller, detailing connections for camera, VTX, GPS, receiver, and LED.
4.2. Firmware Flashing
The F722 Flight Controller supports Betaflight and INAV open-source firmware. The 60A ESC uses BlueJay firmware. Refer to the respective firmware documentation for detailed flashing instructions. Ensure you use the correct firmware target (DAKEFPVF722 for the FC) to avoid bricking the device.
4.3. DJI Air Unit and GPS Module Connection
The flight controller allows connection to DJI O4 Air Units. For GPS modules, ensure they support the u-blox protocol for proper integration.
5. Operation
Once installed and configured with your chosen firmware (Betaflight or INAV), the F722 Mini Flight Stack provides comprehensive control over your FPV drone. The integrated OSD module allows for on-screen display of critical flight parameters. The 60A ESC supports Dshot300/600 motor protocols for precise motor control.
5.1. Key Features for Operation
- High Configuration: STM32F722RET6 master processor, ICM42688 gyroscope, BMP280 barometer, 16MB BlackBox capacity.
- Optimal PCB Layout: Designed for perfect alignment and signal integrity.
- OSD Module: Built-in for easy parameterization and real-time data display.
- ESC Performance: 60A continuous current with BlueJay program and 5C430 MOSFETs, supporting Dshot300/600.
- Firmware Support: Compatible with Betaflight and INAV.
- Connectivity: Supports DJI Air Units and various signal protocols (DSM/SBUS/TBS Crossfire/ELRS).
Image: Visual summary of the F722 Mini BLS 60A Stack's rich features.
Image: Detailed view of the F722 Flight Controller's high-configuration components.
Image: Detailed view of the 60A 4-in-1 ESC, highlighting the XT60 plug and capacitor.
6. Maintenance
To ensure the longevity and optimal performance of your F722 Mini Flight Stack, follow these maintenance guidelines:
- Regular Inspection: Periodically check all solder joints and connections for signs of wear, corrosion, or damage.
- Cleanliness: Keep the boards free from dust, dirt, and moisture. Use compressed air or a soft brush for cleaning. Avoid using liquids directly on the electronics.
- Vibration Dampening: Ensure the silicone vibration absorbers are properly installed and in good condition to minimize stress on the gyroscope.
- Firmware Updates: Regularly check for and apply the latest stable firmware updates for Betaflight/INAV and BlueJay to benefit from performance improvements and bug fixes.
- Storage: Store the flight stack in a dry, cool environment away from direct sunlight and static electricity.
7. Troubleshooting
If you encounter issues with your F722 Mini Flight Stack, consider the following common troubleshooting steps:
- No Power/No Boot: Double-check all power connections, battery voltage, and ensure the USB cable is functioning correctly if connecting to a computer.
- Motor Issues: Verify ESC connections to motors, check motor direction in firmware, and ensure ESC firmware (BlueJay) is correctly flashed and configured.
- Flight Instability: Ensure the flight controller is securely mounted with vibration dampening. Calibrate the accelerometer and gyroscope in your flight control software. Check for correct propeller direction and motor order.
- Connectivity Problems: For receiver or peripheral issues, confirm correct wiring and protocol settings in the flight controller firmware.
- Missing Accessories: If any components listed in the package contents are missing upon arrival, contact the seller immediately with photographic evidence of the received package.
8. User Tips
- Always double-check your wiring against the provided diagrams before applying power to prevent damage.
- Start with default PID settings in Betaflight/INAV and tune gradually for optimal flight performance.
- Utilize the BlackBox logging feature to analyze flight data and diagnose issues effectively.
- Consider adding conformal coating to the boards for extra protection against moisture and debris, especially for outdoor FPV use.
9. Safety Warnings
⚠ 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 disconnect the battery before performing any maintenance or modifications.
10. Warranty and Support
This product typically comes with a limited manufacturer's warranty. For specific warranty terms, conditions, and support, please refer to the seller's policy or contact the seller directly. In case of a defect or issue with the item, it is recommended to contact the seller immediately with relevant pictures or videos of the problem.