DIY 3DOF Arm Manipulator Robotics Kit without Servo Motors

Key Features

1. 3 Degrees of Freedom (DOF):
   • Base rotation
   • Shoulder joint movement
   • Elbow joint movement
2. Construction Material:
   • High-strength aluminum alloy for the main frame.
   • ABS or acrylic parts are needed for additional support (depending on the kit).
3. Servo Motors:
   • Number of Servos: 3 High-Torque Servos (one for each axis).
   • Typical Servos Used:
     • MG996R / MG995 Servo for heavy load joints (torque ~ 10-15 kg·cm).
     • SG90 Micro Servo for smaller joints if applicable.
   • Operating Voltage: 4.8V – 6.6V
   • Features: Metal gear servos for durability and precision.
4. Base Plate:
   • Material: Acrylic/metal with pre-drilled mounting holes.
   • Stable design to prevent wobbling during operation.
5. End Effector (Gripper):
   • Servo-powered mechanical gripper to pick up objects.
   • Adjustable claw width: typically 0-55mm.
6. Control System:
   • Compatible Microcontrollers: Arduino Uno, Mega, or Raspberry Pi.
   • Control Input:
     • Joystick module for manual control.
     • Option for pre-programmed control via software.
   • Communication:
     • USB interface for PC programming.
     • PWM control for servo motors.
7. Power Requirements:
   • External power source: 6V to 7.4V (for servos).
   • Optional battery pack for portable operation.
   • Payload Capacity:
     • Up to 300g depending on the servo motor power.
8. Arm Dimensions:
   • Base Diameter: ~12-15cm
   • Arm Length: ~20-30cm (combined shoulder and elbow segments).
   • Height: ~30-35cm (when fully extended).
9. Assembly:
   • Pre-drilled and labeled parts for easy assembly.
   • Includes all mounting screws, brackets, and tools required.
   • Instruction manual with step-by-step assembly diagrams.
10. Applications:
    • Robotics education and training.
    • DIY and STEM projects.
    • Automation simulation and hobby applications.
11. Weight:
    • Kit weight: ~1.5-2 kg (depending on material).

Package Contents:

1. Aluminum frame parts (pre-cut and labeled)
2. Mechanical gripper
3. Base mounting plate
4. Servo brackets and screws

Optional Upgrades:

• 4DOF Configuration: Additional servo for wrist movement.
• Wireless Control Module: Bluetooth or Wi-Fi module.
• Sensors: IR or ultrasonic sensors for obstacle avoidance.