4-DOF Arduino Robotic Arm Learning Kit with MG90S Servos & Joystick Control
The 4-DOF Arduino Robotic Arm Learning Kit is an educational robotics platform designed for students, makers, and beginners who want hands-on experience with Arduino programming, servo motor control, joystick input, and robotic arm movement.
The kit uses an Arduino UNO R3 compatible controller, four MG90S servo motors, and two PS2-style joystick modules. Moving the joysticks provides intuitive manual control of the robotic arm's servo-driven joints.
Its acrylic mechanical structure and straightforward electronics make it particularly suitable for STEM education, Arduino courses, robotics laboratories, school projects, and DIY learning.
Technical Specifications
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Robot Type: Educational Desktop Robotic Arm
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Degrees of Freedom: 4-DOF
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Main Controller: Arduino UNO R3 Compatible Board as supplied
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Servo Motors: 4 × MG90S Micro Servo
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Control Method: Dual PS2-Style Joystick Modules
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Joystick Type: 2-Axis Analog Joystick
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Expansion Board: V5 Expansion Board as supplied
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Power Supply: 5V DC / 2A Adapter
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Frame Material: Laser-Cut Acrylic
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Programming Platform: Arduino-Compatible
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Connection Wiring: Female-to-Female Dupont Cables
Joystick Control
The robotic arm is manually controlled using two PS2-style analog joystick modules.
Joystick movements are read by the Arduino controller and translated into commands for the four servo motors. This provides a practical introduction to the relationship between analog inputs, microcontroller programming, PWM servo control, and mechanical movement.
Students can also modify the Arduino program to experiment with different control methods, movement ranges, and robotic behaviors.
Educational Value
The kit provides hands-on experience with Arduino programming, analog joystick input, servo motor positioning, PWM control, robotic arm mechanics, coordinate movement concepts, wiring, and embedded-system development.
Because the system is programmable, it can also serve as a starting point for more advanced experiments involving sensors, automated movement sequences, or alternative control methods.
Applications
Ideal for Arduino learning, STEM education, robotics courses, university and secondary-school projects, makerspaces, electronics laboratories, programming exercises, robotic arm demonstrations, and DIY automation experiments.
The kit is primarily intended as an educational and experimental robotic arm, rather than an industrial robot or high-payload manipulator.
Power Note
Servo motors can draw significantly more current while moving or under mechanical load than when idle. The supplied 5V / 2A adapter should be connected according to the kit's wiring configuration.
Avoid powering multiple MG90S servos directly from the Arduino's onboard 5V regulator. Ensure the controller and servo power system share the required common ground when wired according to the kit design.
Package Includes
1 × Set of Acrylic Robotic Arm Parts with Screws & Assembly Hardware
1 × Arduino UNO R3 Compatible Controller Board
1 × 5V / 2A Power Adapter
4 × MG90S Micro Servo Motors
1 × Servo Extension Cable as supplied
1 × Approx. 5cm Cable Wrapping / Spiral Tube
1 × Acrylic Joystick Control Plate
2 × PS2-Style Analog Joystick Modules
10 × 50cm Female-to-Female Dupont Wires
1 × V5 Expansion Board
