1. Introducció
This manual provides detailed instructions for the GEPRC TAKER F405/F722 BLS 80A V2 Stack, a high-performance Flight Controller (FC) and Electronic Speed Controller (ESC) combination designed for FPV drones. The stack is available in two main versions: the F405-based stack and the F722-based stack, along with an option for the F722 Flight Controller only. Each version offers robust features for optimal flight performance and reliability.
Please read this manual thoroughly before installation and operation to ensure correct usage and to maximize the lifespan of your components.
2. Informació de seguretat
- Always disconnect the battery before performing any installation, maintenance, or repair work.
- Ensure correct polarity when connecting power. Incorrect wiring can cause permanent damage to the components.
- Avoid short circuits. Double-check all connections before applying power.
- Manipuleu els components electrònics amb cura per evitar danys per descàrrega electrostàtica (ESD).
- Keep components away from water, moisture, and extreme temperatures.
- Soldering should be performed by experienced individuals. Use appropriate safety gear.
- Ensure proper ventilation during operation, especially for the ESC, to prevent overheating.
3. Producte acabatview
The GEPRC TAKER Stack integrates a Flight Controller and a 4-in-1 ESC into a compact unit, designed for high-performance FPV drone applications. The stack is built with quality components to ensure stable and responsive flight characteristics.

Figure 1: Assembled GEPRC TAKER F405/F722 BLS 80A V2 Stack
3.1. Available Versions
- TAKER F405 BLS 80A V2 STACK: Includes GEP-F405-HD V3 Flight Controller and TAKER H80_BLS 80A 4IN1 ESC.
- TAKER F722 BLS 80A V2 STACK: Includes GEP-F722-HD V2 Flight Controller and TAKER H80_BLS 80A 4IN1 ESC.
- GEP-F722-HD V2 Flight Controller: Flight Controller only option.
4. Especificacions
4.1. GEP-F405-HD V3 Flight Controller

Figure 2: GEP-F405-HD V3 Flight Controller
| Característica | Especificació |
|---|---|
| MCU | STM32F405 |
| IMU | ICM42688-P (SPI) |
| Air Unit Connection | Direct plugging into D-J-I Air Unit |
| Caixa Negra | 16M a bord |
| Baròmetre | BMP280 |
| Sortides del motor | M1-M6 |
| Interfície USB | Tipus-C |
| OSD | BetaFlight OSD amb xip AT7456E |
| BEC | 5V@3A, 12V@2.5A dual BEC |
| Destí del firmware | GEPRCF405 |
| Muntatge | 30.5×30.5mm, φ4mm hole (becomes φ3mm with silicone shock-absorbing circle) |
| Entrada Voltage | 3-6S LiPo |
| UART | 6 UART |
| Filtre de potència | Filtre LC integrat |
| Pes | 7.3 g |
4.2. GEP-F722-HD V2 Flight Controller

Figure 3: GEP-F722-HD V2 Flight Controller
| Característica | Especificació |
|---|---|
| MCU | STM32F722 |
| IMU | ICM42688-P (SPI) |
| Air Unit Connection | Direct plugging into D-J-I Air Unit |
| Caixa Negra | 16M a bord |
| Interfície USB | Tipus-C |
| OSD | BetaFlight OSD amb xip AT7456E |
| BEC | 5V@3A, 9V@2.5A dual BEC |
| Destí del firmware | GEPRCF722 |
| Mida | 36.85×36.85mm, hole 30.5×30.5mm (becomes φ3mm with silicone shock-absorbing circle) |
| Entrada Voltage | 3-6S LiPo |
| UART | 5 UART |
| Filtre de potència | Filtre LC integrat |
| Pes | 8.1 g |
4.3. TAKER H80_BLS 80A 4IN1 ESC

Figure 4: TAKER H80_BLS 80A 4IN1 ESC
| Característica | Especificació |
|---|---|
| Entrada Voltage | Lipo 3-6S |
| Amperímetre | Suport |
| Corrent continu | 80A |
| Corrent d’esclat | 85A (5 segons) |
| Protocol de suport | Dshot 150/300/600 |
| Mida | 56.3*61.1mm, hole 30.5×30.5mm (becomes φ3mm with silicone shock-absorbing ring) |
| Pes | 28.1 g |
| Objectiu | B_X_30 |
5. Configuració i instal·lació
5.1. Mounting the Stack
- The Flight Controller and ESC are designed to be stacked. Ensure the correct orientation of both boards as per the markings.
- The mounting holes are 30.5×30.5mm. Use the provided silicone shock-absorbing circles to reduce vibrations to the gyroscope. These circles will reduce the φ4mm holes to φ3mm for standard mounting screws.
- Secure the stack firmly but do not overtighten the screws, as this can damage the boards.
5.2. Connexions de cablejat
The stack is designed for easy integration. Refer to the specific wiring diagrams for your drone frame and components. Key connections include:
- Entrada d'alimentació: Connect your LiPo battery (3-6S) to the main battery pads on the ESC. Ensure correct polarity.
- Connexions del motor: Connect your motors to the M1-M6 pads on the ESC. The order typically corresponds to the motor layout in BetaFlight.
- D-J-I Air Unit: The FC supports direct plugging into the D-J-I Air Unit for simplified digital FPV setup. Consult the FC diagram for the dedicated port.
- Receptor: Connect your receiver (e.g., SBUS, CRSF, ELRS) to the appropriate UART on the FC.
- GPS/Other Peripherals: Utilize the available UARTs for additional peripherals like GPS, VTX, or camera control.

Figura 5: Example of connection points on the stack
6. Instruccions de funcionament
6.1. Firmware Flashing (BetaFlight)
- Download and install the latest BetaFlight Configurator software on your computer.
- Connect the Flight Controller to your computer using a Type-C USB cable.
- In BetaFlight Configurator, select the correct firmware target:
- For F405 FC:
GEPRCF405 - For F722 FC:
GEPRCF722
- For F405 FC:
- Flash the latest stable firmware version.
- After flashing, perform a full chip erase and restore your configuration.
6.2. Configuració
- Protocol ESC: The ESC supports Dshot 150/300/600. Configure this in BetaFlight's 'Motors' tab. Dshot600 is generally recommended for optimal performance.
- OSD: The FC features an AT7456E OSD chip. Configure your desired on-screen display elements in BetaFlight's 'OSD' tab.
- UARTs: Enable the correct serial protocols for your receiver, VTX, GPS, etc., on the respective UARTs in BetaFlight's 'Ports' tab.
- Giroscopi: The ICM42688-P gyroscope is highly stable. Ensure proper soft-mounting with the silicone rings to fully utilize its vibration dampening capabilities.
7. Manteniment
- Regularly inspect all solder joints for cracks or cold joints.
- Check for any loose wires or damaged components after crashes or hard landings.
- Keep the boards clean from dust, dirt, and debris. Use compressed air or a soft brush.
- Ensure adequate airflow around the ESC, especially during aggressive flying, to prevent thermal throttling.
- Periodically check for firmware updates for both the FC (BetaFlight) and ESC (BLHeli_S/BLHeli_32 if applicable) to benefit from performance improvements and bug fixes.
8. Solució De Problemes
- Sense energia: Check battery connection, main power lead, and ensure no short circuits. Verify BEC output voltages.
- Motors que no giren: Verify ESC connections to motors and FC. Check motor direction in BetaFlight. Ensure ESC protocol is correctly set. Calibrate ESCs if necessary.
- No FC Connection to BetaFlight: Ensure correct USB cable and drivers are installed. Try a different USB port. Re-flash firmware if necessary.
- Vol inestable: Check for vibrations (ensure soft mounting is effective). Verify PID tuning. Ensure propellers are balanced and undamaged.
- OSD Issues: Check OSD settings in BetaFlight. Ensure video signal is correctly routed.
- D-J-I Air Unit Connection Problems: Verify the direct plug connection is secure. Check wiring if not using direct plug. Ensure correct UART is enabled for the Air Unit in BetaFlight.
9. Consells d'usuari
- Utilize the 16M black box storage for flight log analysis. This can be invaluable for diagnosing flight performance issues and fine-tuning PIDs.
- Avançanttage of the dual independent BECs to power different components (e.g., 5V for receiver/GPS, 9V/12V for VTX/camera) without overloading a single rail.
- Always test motor direction and arming behavior on a test bench with propellers removed before actual flight.
- Consider using conformal coating on the FC and ESC for added protection against moisture and dust, especially for outdoor flying.
10. Garantia i Suport
GEPRC products are designed for high performance and reliability. For technical support, troubleshooting assistance, or warranty claims, please contact your retailer or GEPRC directly through their official support channels. Keep your proof of purchase for warranty validation.





