1. Introduction
Welcome to the A21 PRO Drone user manual. This guide provides essential information for setting up, operating, and maintaining your A21 PRO Drone. The A21 PRO is a professional-grade FPV (First Person View) quadcopter equipped with a 4K HD wide-angle camera, 5G WiFi connectivity, a brushless motor, and advanced features like optical flow positioning and anti-collision capabilities. Designed for both enthusiasts and beginners, it offers a stable and responsive flight experience.
Figure 1: A21 PRO Drone and Remote Control
2. Safety Guidelines
⚠️ Disclaimer: For recreation use only. Illegal modification of drones/planes is prohibited. Please also pay attention to the relevant laws and regulations on the use of drones/planes in your country/area to ensure legal use.
- Always operate the drone in open, unobstructed areas, away from people, animals, and obstacles.
- Do not fly near airports, restricted airspace, or sensitive areas.
- Maintain a safe distance from power lines, buildings, and water bodies.
- Ensure the drone battery and remote control battery are fully charged before each flight.
- Do not operate the drone in strong winds or adverse weather conditions.
- Keep fingers and loose clothing away from rotating propellers.
- Children under 14 years old should operate the drone under adult supervision.
- Perform pre-flight checks to ensure all components are securely attached and functioning correctly.
3. Package Contents
Please check the package contents carefully upon unboxing:
- Aircraft (Drone) x 1
- Remote Control x 1
- Body Battery (3.7V 1000mAh) x 1
- Phone Holder x 1
- Storage Handbag x 1
- USB Charging Cable x 1
- Spare Propeller Blade Set x 1
- Product Manual x 1
- APP Software Manual x 1
- Screwdriver x 1
Figure 2: Included Accessories
4. Technical Specifications
| Feature | Specification |
|---|---|
| Model Number | A21 PRO |
| Drone Dimensions | 18 x 15.5 x 4.7 CM |
| Drone Weight | 120 g |
| Motor Type | Brushless Motor (1104) |
| Drone Battery Capacity | 3.7V 1000mAh (Modular, Rechargeable) |
| Remote Controller Battery | 3.7V 800mAh (Rechargeable) |
| Charging Time | Approx. 60 minutes (Drone), 90 minutes (Remote Control) |
| Flight Time | Approx. 15 minutes |
| Remote Control Distance | 100 meters |
| Transmission Signal | 2.4G WiFi (for control), 5G WiFi (for FPV) |
| Control Channels | 4 channels |
| Gyroscope | 6-axis |
| Camera Integration | Camera Included (Dual Cameras) |
| Front Camera Resolution | 4K (4096*2160 Pixel) |
| Camera Adjustment | 180° Electrically Adjustable Lens (via remote control) |
| Camera Stabilization | Electronic Image Stabilization |
| Video Format | MP4, MOV |
| FPV Operation | Yes |
| Remote Control Display Size | 4.5-inch (Integrated) |
| Obstacle Avoidance | Visual Avoidance (Four-sided) |
| Sensing Type | Complete Omnidirectional |
| GPS | Yes |
| Max Wind Speed Resistance | < 10 KM/H |
| Recommended Age | 14+ Years |
| APP Supported Languages | English, Simplified Chinese |
| Certification | CE |
Figure 3: Detailed Parameters
5. Setup Guide
5.1 Charging Batteries
Before first use, fully charge both the drone's body battery and the remote control battery.
- Drone Battery: Connect the USB charging cable to the drone's body battery and a suitable USB power adapter (not included). The charging time is approximately 60 minutes.
- Remote Control Battery: Connect the USB charging cable to the remote control and a suitable USB power adapter. The charging time is approximately 90 minutes.
Important: Use only the provided USB charging cable. Do not overcharge batteries.
Figure 4: Modular Drone Battery
5.2 Installing Batteries
- Drone Battery: Insert the fully charged modular battery into the battery compartment on the drone's body until it clicks into place.
- Remote Control Battery: The remote control has a built-in rechargeable battery. Ensure it is charged as per section 5.1.
5.3 Drone Assembly
The A21 PRO Drone comes with integrated propeller guards. If spare propeller blades are needed, use the provided screwdriver to replace them carefully, ensuring correct orientation.
Figure 5: Anti-Collision Protection
5.4 Remote Control Overview
The remote control features a 4.5-inch integrated screen for FPV and various control buttons:
Figure 6: Remote Control with Integrated Screen
Figure 7: Remote Control in Use
Key controls include:
- Left Joystick: Throttle (Up/Down), Left/Right Rotation
- Right Joystick: Forward/Backward, Left/Right Side Flight
- Speed Regulation Button: Adjust flight speed (Low, Medium, High).
- One-Key Takeoff/Landing Button: For automated takeoff and landing.
- Power Switch: Turns the remote control On/Off.
- Lens Up/Down Buttons: Adjust the camera angle.
- Take/View Photos Button: Capture still images.
- Record/View Video Button: Start/stop video recording.
- Screen Switch Button: Switch between FPV display modes.
- Short Press Reset / Long Press Fill Light Switch: Reset drone or control LED lights.
- Mobile Phone Holder: Attach your smartphone for APP control and FPV (if not using integrated screen).
5.5 APP Installation
For advanced features and FPV on your smartphone, download the dedicated drone APP. Refer to the included APP Software Manual for detailed instructions on installation and connection. The APP supports English and Simplified Chinese.
6. Operating Instructions
6.1 Power On and Pairing
- Place the drone on a flat, level surface.
- Press and hold the power button on the drone until the indicator lights turn on.
- Turn on the remote control by pressing the power switch.
- The drone and remote control will automatically pair. Wait for the indicator lights to stabilize, indicating a successful connection.
6.2 Calibration
After pairing, perform gyroscope calibration as instructed in the APP Software Manual or the quick start guide. This ensures stable flight.
6.3 Takeoff and Landing
- One-Key Takeoff: Press the One-Key Takeoff/Landing button on the remote control. The drone will automatically ascend to a stable hovering height.
- Manual Takeoff: Push both joysticks down and outwards simultaneously to unlock the motors. Then, slowly push the left joystick up to ascend.
- One-Key Landing: Press the One-Key Takeoff/Landing button again. The drone will automatically descend and land.
- Manual Landing: Slowly pull the left joystick down to descend. Once landed, push both joysticks down and inwards to lock the motors.
6.4 Basic Flight Controls
- Ascend/Descend: Push the left joystick up/down.
- Forward/Backward: Push the right joystick up/down.
- Turn Left/Right: Push the left joystick left/right.
- Fly Left/Right (Sideways): Push the right joystick left/right.
- Speed Adjustment: Use the speed regulation button to switch between low, medium, and high-speed modes.
Video 1: A21 PRO Drone Product Demonstration
6.5 Advanced Flight Features
- Optical Flow Positioning: The drone utilizes optical flow sensors for stable hovering, especially indoors or in areas with clear ground patterns. This helps maintain position without constant manual input.
- Headless Mode: In headless mode, the drone's orientation is relative to the pilot, making it easier to control without worrying about the drone's front or back.
- Trajectory Flight: Draw a flight path on the APP screen, and the drone will automatically follow the designated route.
- 360° Stunt Roll: Press the 360° stunt roll button (refer to remote control diagram) and move the right joystick in any direction to perform an aerial flip.
- Obstacle Avoidance: The A21 PRO features four-sided visual obstacle avoidance, helping it detect and avoid obstacles during flight.
Figure 8: Optical Flow Positioning Hover
Figure 9: 360° Stunt Roll
6.6 Camera Operation
- Taking Photos: Press the Take/View Photos button on the remote control or tap the photo icon in the APP.
- Recording Video: Press the Record/View Video button on the remote control or tap the video icon in the APP to start/stop recording.
- Adjusting Camera Angle: Use the Lens Up/Down buttons on the remote control to adjust the 180° electrically adjustable camera lens.
- FPV (First Person View): The integrated 4.5-inch screen on the remote control provides real-time video feed. Alternatively, use the APP on your smartphone for FPV via 5G WiFi.
- Gesture Photography/Video: Refer to the APP Software Manual for instructions on using gesture controls for photos and videos.
Figure 10: 4K Ultra Clear Dual Photography
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the drone and remote control. Do not use harsh chemicals or solvents.
- Propellers: Regularly check propellers for damage. Replace any bent or broken blades using the provided spare set and screwdriver.
- Storage: Store the drone and accessories in a cool, dry place, away from direct sunlight and extreme temperatures. Remove batteries if storing for extended periods.
- Battery Care: Do not puncture, disassemble, or expose batteries to fire or water. Dispose of batteries according to local regulations.
8. Troubleshooting
| Problem | Possible Solution |
|---|---|
| Drone does not power on | Ensure the drone battery is fully charged and correctly inserted. Check the power button. |
| Remote control does not power on | Ensure the remote control battery is fully charged. |
| Drone and remote control fail to pair | Turn off both the drone and remote control, then restart them in the correct sequence (drone first, then remote). Ensure they are within range. |
| Unstable flight / Drifting | Perform gyroscope calibration on a flat surface. Check for damaged propellers and replace if necessary. Ensure optical flow sensors are clean. |
| No FPV video feed | Ensure 5G WiFi is enabled on your smartphone (if using APP) and connected to the drone's WiFi network. Check camera connections. Ensure the drone and remote are paired. |
| Poor image/video quality | Ensure the camera lens is clean. Fly in good lighting conditions. Check for stable flight to avoid blurry footage. |
| Short flight time | Ensure the drone battery is fully charged. Flight time can be affected by aggressive flying, wind, and payload. Consider purchasing additional batteries. |
| Drone not responding to controls | Check battery levels of both drone and remote. Ensure drone and remote are paired and within range. Restart both devices. |
9. User Tips
- Practice in Low Speed: If you are new to drones, start flying in low-speed mode to get accustomed to the controls before attempting higher speeds or complex maneuvers.
- Utilize Optical Flow: For indoor flights or when precise hovering is needed, ensure the optical flow positioning is active and the drone is flying over a textured surface for best performance.
- Check Propellers Regularly: Even minor damage to propellers can significantly impact flight stability and efficiency. Always inspect them before and after each flight.
- Learn Headless Mode: Headless mode can simplify flying for beginners by eliminating the need to track the drone's front direction. Practice using it to gain confidence.
- Monitor Battery Life: Always keep an eye on the battery indicators on the remote control and drone. Plan your flights to ensure you have enough battery to return safely.
- Explore APP Features: The companion APP offers additional functionalities like trajectory flight and gesture controls. Take time to explore these features to enhance your flying experience.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the contact information provided by your retailer or the official LYZRC website. Keep your purchase receipt as proof of purchase.
