HPXGRC F722 Stack Flight Controller and BLHeli_32 ESC Instruction Manual

1. Introduction

This manual provides detailed instructions for the installation, configuration, and operation of your HPXGRC F722 Flight Controller and BLHeli_32 Electronic Speed Controller (ESC) Stack. Designed for FPV racing drones, this stack offers high-performance flight control and efficient power delivery. Please read this manual thoroughly before attempting installation or operation to ensure proper functionality and safety.

2. Specifications

2.1. HPXGRC F722 Flight Controller

2.2. HPXGRC BLHeli-32 8S 80A ESC

2.3. HPXGRC BLHeli-32 8S 100A ESC

2.4. Key Features

• Precise Flight Control: Adopts high-precision STM32F722 main control chip and ICM42688 gyroscope.
• BLHeli-32 Firmware: Ensures stable and efficient performance for the ESC.
• 32MB Black Box: On-board large-capacity black box for parameter tuning, optimization, and flight data recording.
• Flat Cable Connection: Electronic speed controller and flight control system are connected by flat cables for enhanced stability.
• Dual Protection: On-board anti-spark module and TVS (Transient Voltage Suppressor) to avoid voltage spikes.
• On-board Polymer Capacitor: Simplifies installation and reduces overall aircraft weight.
• Strong and Flow-Resistant Design: 8-layer high-flow-resistant PCB design provides strong support for high-performance flight.
• Full Plug Design: Plug-and-play interface for quick installation and maintenance of receivers, GPS, video transmission, camera, buzzer, and LED modules.
• Upgraded ESC: Circuit design optimized with upgraded MOSFETs for stable output, available in 80A and 100A options.

3. Package Contents

3.1. Option 1: HPXGRC F722 + BL-32 80A Stack

The 80A stack package includes:

1. HXGRC F722 FC *1PCS
2. BL_32 80A ESC *1PCS
3. Screw *4PCS
4. Capacitance *1PCS
5. Nut *4PCS
6. Latex column *8PCS
7. Circular gasket *4PCS
8. Heat shrink tubing *2PCS
9. SH1.0-4Pin single head *2PCS
10. SH1.0-6 Pin single head *1PCS
11. SH1.0-8Pin single head *1PCS
12. XT60 *1PCS

3.2. Option 2: HPXGRC F722 + BL-32 100A Stack

The 100A stack package includes:

1. HXGRC F722 FC *1PCS
2. BL_32 100A ESC *1PCS
3. Screw *4PCS
4. Capacitance *1PCS
5. Nut *4PCS
6. Latex column *8PCS
7. Circular gasket *4PCS
8. Heat shrink tubing *2PCS
9. SH1.0-4Pin single head *2PCS
10. SH1.0-6 Pin single head *1PCS
11. SH1.0-8Pin single head *1PCS
12. XT60 *1PCS

4. Setup and Installation

4.1. Physical Installation and Dimensions

The F722 Flight Controller and BLHeli_32 ESC are designed to be stacked. Ensure proper insulation between the boards and the drone frame. The mounting hole pattern is 30.5mm x 30.5mm (M4). Refer to the dimension drawing for precise measurements.

Dimension drawing showing the 36mm x 36mm FC and 56mm x 59mm ESC with 30.5mm mounting holes.

4.2. Wiring Diagram

Carefully follow the wiring diagram to connect all components, including motors, receiver, camera, video transmitter (VTX), GPS, and LED modules. The stack features a full plug design for simplified connections using ribbon cables and direct solder pads.

Comprehensive wiring diagram illustrating connections for motors, receiver, camera, VTX, GPS, and LED.

4.3. Software Configuration

The Flight Controller runs BETAFLIGHT/INAV firmware. Connect the FC to your computer via the Type-C USB interface. Use the respective configurator software (Betaflight Configurator or INAV Configurator) to:

• Flash the appropriate firmware (DAKEFPVF722X8 target).
• Calibrate the accelerometer and gyroscope.
• Configure receiver protocols (ELRS/CRSF/S.BUS/Frsky/Futabafysky/TBs Crossfire/DSMX).
• Set up motor outputs and ESC protocols (Dshot300/Dshot600).
• Configure OSD, Black Box, and other peripherals.

The ESC uses BLHeli-32 firmware. It can be configured via the flight controller passthrough in Betaflight/INAV configurator or directly using the BLHeliSuite32 software.

5. Operation

Once installed and configured, ensure all connections are secure and the drone is armed safely. Always perform initial tests in a controlled environment. The F722 FC provides precise flight control, and the BLHeli-32 ESCs ensure smooth and responsive motor operation. Monitor battery voltage (3-8S LIPO supported) and current draw during flight.

6. Maintenance

• Regular Inspection: Periodically check all solder joints and connections for signs of wear or damage.
• Cleaning: Keep the boards free from dust, dirt, and moisture. Use compressed air or a soft brush for cleaning.
• Firmware Updates: Regularly check for and apply the latest firmware updates for both the FC (Betaflight/INAV) and ESC (BLHeli-32) to ensure optimal performance and access to new features.
• Environmental Conditions: Operate and store the stack within the specified temperature and humidity ranges (Operating: 20℃~+85℃, Storage: 20℃~+70℃, Humidity: 20~95%).

7. Troubleshooting

• No Power: Check battery connection, XT60 connector, and ensure no short circuits. Verify power output from the ESC.
• Motors Not Spinning: Ensure ESCs are calibrated, motor direction is correct in software, and Dshot protocol is properly configured. Check motor connections to the ESC.
• FC Not Connecting to PC: Try a different USB cable, ensure drivers are installed, and try a different USB port. Check if the FC is in DFU mode for flashing.
• Unstable Flight: Re-calibrate the accelerometer, check for loose components, ensure propellers are balanced and undamaged. Review PID settings.
• OSD Issues: Verify OSD chip configuration in Betaflight/INAV. Check video signal connections.
• Black Box Not Recording: Ensure Black Box logging is enabled and configured in the flight controller software.

8. User Tips

• Always use a smoke stopper during initial power-up to prevent damage from short circuits.
• Double-check all wiring before applying power. Incorrect polarity can permanently damage components.
• For optimal performance, keep your firmware updated to the latest stable versions.
• Utilize the Black Box feature to analyze flight data and fine-tune your drone's performance.
• Consider adding conformal coating to protect the electronics from moisture and debris, especially for outdoor flying.

9. 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. Detailed contact information can typically be found on the seller's website or your order details.