1. Introduction
The LAFVIN Mechanical 4WD Robot Arm Car Kit is an educational platform designed for enthusiasts and students interested in STEM (Science, Technology, Engineering, and Mathematics) fields. This kit provides a hands-on experience in programming, electronics, and robotics, allowing users to build and control a versatile robot car with a robotic arm.
It features multiple control methods, including a dedicated mobile application (Android only) for Bluetooth control, infrared (IR) remote control, and various autonomous functions such as ultrasonic obstacle avoidance, line tracking, and gravity sensing.
Important Note: This kit does not include batteries. You will need to purchase two (2) 3.7V 18650 lithium batteries separately to power the robot car.
2. Safety Information
- Always ensure the power is off before connecting or disconnecting any components.
- Handle electronic components with care to avoid damage from static electricity.
- Use only the specified 3.7V 18650 lithium batteries. Incorrect battery types or voltages can damage the device or pose a fire hazard.
- Keep small parts away from young children to prevent choking hazards.
- Adult supervision is recommended during assembly and operation, especially for younger users.
- Avoid operating the robot in wet conditions or near water.
3. Package Contents
Before starting assembly, please verify that all components listed below are present in your kit. Refer to the image for visual confirmation.
- R3 Board x1
- Expanding Board x1
- IR Remote Control x1
- Ultrasound Module x1
- MG90S Servo x3
- Bluetooth Module x1
- Acrylic Chassis Plate A.1 x1
- Line Tracking Module x3
- DC Motor x4
- Wheel x4
- Acrylic Chassis Plate A.2 x1
- Acrylic Chassis Plate A.3 x1
- Acrylic Chassis Plate A.4 x1
- USB Cable x1
- Battery Case x1
- Bottom Acrylic Layer x1
- Upper Acrylic Layer x1
- Adhesive Tape x1
- AXIC Plain Bearing x1
- Cylinder Screwdriver x1
- Tie x3
- Screw bag x1 (containing various screws and nuts)
- Screwdriver x1
- 3pin F-F Dupont Wire x3
- 4pin XH2.54 to F Dupont Wire x1
- 3pin Servo Extension Cable x1
4. Assembly Instructions
Follow these steps carefully to assemble your LAFVIN Robot Arm Car. A detailed video installation guide is also available for visual assistance.
4.1. Motor Assembly
Attach the motors to the chassis. Ensure they are securely fastened as shown in the diagram.
4.2. Chassis Assembly
Assemble the main chassis structure using the acrylic plates and appropriate fasteners.
4.3. Robotic Arm Assembly
Construct the robotic arm using the servo motors and acrylic pieces. Pay attention to the orientation of each part.
4.4. Attaching Robotic Arm to Chassis
Once the robotic arm is assembled, attach it to the main chassis of the robot car.
4.5. Parts Distribution Overview
This diagram shows the general layout of the main components on the robot car chassis, including motors, sensors, and the robotic arm.
4.6. Wiring Diagram
Carefully follow the wiring diagram to connect all electronic components to the main board and expanding board. Incorrect wiring can damage the components.
4.7. Final Assembly
Complete the assembly by securing all remaining parts and ensuring all connections are firm.
5. Setup and Programming
5.1. Battery Installation
Insert two (2) 3.7V 18650 lithium batteries into the battery case, ensuring correct polarity. Connect the battery case to the designated power input on the main board.
5.2. Software and App Installation
The kit supports graphical programming and Mixly. Detailed tutorials and programming code are provided to guide you through the process. For mobile control, download the dedicated '4WD Robot Arm Smart Car' application (Android only) from the provided resources or app store.
5.3. Bluetooth Connection
To connect via Bluetooth, ensure the robot car is powered on and Bluetooth is enabled on your Android device. Open the '4WD Robot Arm Smart Car' app. The app will automatically detect and connect to the robot when it is in close proximity.
6. Operating Instructions
The LAFVIN Robot Arm Car offers various modes of operation and control. Familiarize yourself with each function to maximize your learning and play experience.
6.1. Robotic Arm Control
Control the robotic arm's movements (open, close, lift, lower) using either the mobile app or the IR remote. The app provides a visual interface for precise control.
6.2. Save and Execute Arm Actions
The mobile app allows you to record a sequence of robotic arm movements and save them as an 'Action'. You can then execute these saved actions with a single command, enabling complex tasks like 'Auto-Carry'.
6.3. Anti-Drop Function
The robot is equipped with sensors that detect edges, preventing it from falling off elevated surfaces like tables. This function can be activated via the mobile app.
6.4. Gravity Sensor Control
Utilize your smartphone's gravity sensor to control the robot's movements. Tilt your phone to steer the robot, providing an intuitive control experience.
6.5. Line Tracking
The robot can follow a black line on a light surface using its line tracking modules. This feature is ideal for creating mazes and programmed paths.
6.6. Ultrasonic Obstacle Avoidance
The ultrasonic module allows the robot to detect obstacles in its path and autonomously navigate around them, preventing collisions.
6.7. Following Obstacles
In this mode, the robot will follow an object or person at a set distance, using its ultrasonic sensor to maintain proximity.
7. Maintenance
- Keep the robot clean and free from dust and debris. Use a soft, dry cloth for cleaning.
- Regularly check all screw connections to ensure they are tight.
- Inspect wires for any signs of wear or damage. Replace damaged wires immediately.
- Store the robot in a dry, cool place away from direct sunlight and extreme temperatures.
- Remove batteries if the robot will not be used for an extended period to prevent leakage.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Robot does not power on. | Batteries are dead or incorrectly installed. | Check battery polarity and charge/replace batteries. Ensure the power switch is ON. |
| Bluetooth connection fails. | Robot is too far from the device; Bluetooth is off on the device; App not installed correctly. | Ensure robot and device are close. Turn on device Bluetooth. Reinstall the app if necessary. |
| Robotic arm not moving correctly. | Servo motor connection issues; incorrect programming. | Check servo wiring according to the diagram. Verify your programming code. |
| Line tracking not working. | Line tracking modules incorrectly wired or calibrated; poor line contrast. | Check module wiring. Ensure the line is dark and the surface is light. Calibrate modules if possible. |
| Missing components upon arrival. | Packaging error. | Immediately contact the seller with your order details and a list of missing items for assistance. |
9. Specifications
| Feature | Detail |
|---|---|
| Brand Name | LAFVIN |
| Type | Mechanical 4WD Robot Arm Car Kit (includes Voltage Regulator components) |
| Origin | Mainland China |
| Condition | New |
| Control Methods | APP (Bluetooth, Android only), IR Remote Control |
| Sensors/Functions | Ultrasound (Obstacle Avoidance, Following), Gravity Sensor, Line Tracking, Robotic Arm Control (Save/Execute Actions, Auto-Carry), Anti-Drop |
| Programming Support | Graphical Programming, Mixly |
| Power Supply | 2 x 3.7V 18650 Lithium Batteries (not included) |
| Package Dimensions (L x W x H) | 30cm x 20cm x 10cm |
| Package Weight | 1.1 kg |
10. User Tips
- This kit is excellent for learning about mechanical engineering, electronics, and programming. Take your time with each step to understand the concepts.
- The provided programming code and tutorials are a great starting point. Don't hesitate to experiment and modify the code to explore new functionalities.
- For advanced users, consider exploring upgrades such as adding an Arduino camera, though specific instructions for such modifications are not included in this manual.
11. Warranty and Support
For any issues, questions, or technical support regarding your LAFVIN Mechanical 4WD Robot Arm Car Kit, please contact the seller or manufacturer directly. Keep your purchase records handy for warranty claims.
