1. Introduction
Figure 1: Assembled iFlight Borg Mini F7 Stack.
The iFlight Borg Mini F7 Stack combines the Borg Mini F7 Flight Controller and the Borg Mini 60 ESC, designed for high-performance FPV racing drones. This stack offers advanced features and robust power delivery to enhance your flying experience. This manual provides essential information for proper installation, configuration, and maintenance.
The Borg Mini F7 Flight Controller is specifically designed for racing FPV, providing unmatched performance. Elevate your racing experience with the cutting-edge technology of the Borg Series!
2. Product Specifications
2.1. Borg Mini F7 Flight Controller (FC)
- Input Voltage: 4-8S (supports LIHV battery)
- MCU: STM32F722RET6
- Gyro: ICM42688
- Barometer: SPA06-003
- OSD Chip: AT7456E (LGA)
- Flash: 32MB (Blackbox flash)
- UARTS: 6
- Motor Outputs: 4
- I2C Serial: Not supported
- VTX Protocol: Supports DJI MSP/Smartaudio/IRCTramp/HDZero
- LED Controller: Yes
- Beeper Pad: Yes
- Betaflight Firmware Target: IFLIGHT_BLITZ_F722
- INAV Firmware Target: IFLIGHT_BLITZ_F722
- Mount Pattern: 20x20mm with φ4mm holes
- Dimensions: 27x30.6mm (±1mm)
- Weight: 6.9g (±1g)
- BEC: 5V 2.5A, 12V 2A (12V with VTX switch)
2.2. Borg Mini 60 ESC
- Product Name: Borg Mini 60 ESC
- Input Voltage: 2-6S (supports LIHV battery)
- Max. Continuous Current: 60A
- Max. Burst Current: 65A (10s)
- MCU: STM32G071N
- Driver: FD6288
- Firmware: BL32 (32bit ESC)
- Target: IFLIGHT_BLITZ_G3 32.9
- Current Sensor: Yes
- BEC: N/A
- Telemetry: Supported
- Bidirectional DSHOT: Supported
- Dimensions: 42x35mm (±1mm)
- Mounting Holes: 20x20mm with φ4mm holes
- Weight: 10.1g (±1g)
- Protocol: Supports DShot150/300/600, MultiShot, OneShot etc.
3. Setup and Installation
3.1. Packing List
- 1 x Borg Mini F7 Flight Controller
- 1 x Borg Mini 60 ESC
- 1 x Cable set
- 5 x Silicon grommets
3.2. Physical Dimensions
The stack is designed for a 20x20mm mounting pattern with φ4mm holes. Ensure your frame supports these dimensions.
Figure 2: Side view of the assembled Borg Mini F7 Stack with dimensions.
Figure 3: Top view of the Borg Mini F7 Flight Controller showing its dimensions and mounting pattern.
Figure 4: Top view of the Borg Mini 60 ESC showing its dimensions and mounting pattern.
3.3. Wiring Diagrams
Refer to the following diagrams for correct wiring of the Flight Controller and ESC. FPC cables ensure secure connections with ESCs, while SH1.0 connectors enhance reliability across all other interfaces.
Figure 5: iFlight Borg Mini F7 Flight Controller Wiring Diagram.
Important Note: For 6-inch and above setups, a 50V 470uF capacitor needs to be added. Solder the capacitor at the position indicated by the arrow in the diagram (VBAT positive end and Capacitor negative end).
Figure 6: iFlight Borg Mini 60 ESC Wiring Diagram.
Important Note: For 6-inch and above setups, a 50V 470uF capacitor needs to be added. Solder the capacitor at the position indicated by the arrow in the diagram (VBAT positive end and Capacitor negative end).
3.4. UART Wiring Suggestions
- UART 1: For VTX HD / Analog
- UART 2: For Receiver
- UART 3: For GPS or other sensors requiring a serial port
- UART 4: For GPS
- UART 5: For GPS or other sensors requiring a serial port
- UART 6: For ESC Telemetry
4. Operating Instructions
The iFlight Borg Mini F7 Stack operates using Betaflight or INAV firmware for the Flight Controller and BL32 firmware for the ESC. Detailed configuration and tuning are performed via the respective configurator software (e.g., Betaflight Configurator, INAV Configurator).
4.1. Firmware Flashing
- FC Firmware Target: IFLIGHT_BLITZ_F722 (for both Betaflight and INAV)
- ESC Firmware Target: IFLIGHT_BLITZ_G3 32.9 (BL32)
Connect the FC to your computer via the USB-C port. Use the appropriate configurator software to flash the firmware and configure settings such as motor direction, PID tuning, OSD elements, and flight modes.
5. Maintenance
- Regularly inspect all solder joints for cold joints or breaks.
- Ensure all connectors are securely seated.
- Keep the stack clean from dust, dirt, and moisture.
- Periodically check for firmware updates for both the FC and ESC to benefit from performance improvements and bug fixes.
- Avoid exposing the electronics to extreme temperatures or direct sunlight for prolonged periods.
6. Troubleshooting
- No Power: Check battery connection, main power leads, and ensure no short circuits.
- Motors Not Spinning: Verify ESC calibration, motor wiring, and DShot protocol settings in the FC configurator. Check for bent motor pins or damaged motor wires.
- Intermittent Signal Loss: Inspect receiver wiring, antenna placement, and ensure proper binding with your radio transmitter.
- Unstable Flight: Review PID settings, ensure correct motor order and rotation, and check for vibrations affecting the gyro.
- VTX Issues: Confirm VTX power supply (12V BEC), antenna connection, and VTX protocol settings (DJI MSP/Smartaudio/IRCTramp/HDZero).
7. User Tips
- When mounting the stack, ensure that the screws used are of appropriate length to avoid damaging components on the boards. The mounting pattern is 20x20mm with φ4mm holes.
- Always perform a dry run and check motor direction in the Betaflight/INAV configurator before attaching propellers.
- Consider using thread-locking compound on mounting screws to prevent them from loosening due to vibrations.
8. Warranty and Support
For warranty claims, technical support, or further assistance, please contact iFlight Official Store directly through their official channels. Keep your proof of purchase for any warranty-related inquiries.
