(Servos not included — requires 4× SG90 or MG90S servos)

Recommended Servos (Buy Links)

   TowerPro MG90S Micro Servo (Metal Gears)

• More durable and slightly stronger than SG90.

• Specs: 1.8 kg·cm (4.8 V) → 2.2 kg·cm (6 V), metal gears, 0.10 s/60°

• Buy here: SmartygenBD – MG90S Servo Motor

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How to Choose:

• SG90: Lightweight and budget-friendly—great if your arm won’t carry heavy loads.

• MG90S: Metal gears endure more wear and handle higher torque—ideal for heavier grips or frequent use.

Product Description:
Build and control your own robotic arm with this 4‑degree‑of‑freedom acrylic mechanical arm kit. Designed for STEM projects, makers, and hobbyists, it offers an easy-to-assemble platform powered by four micro servos (not included). Due to its compact size and lightweight construction, this kit is ideal for Arduino, Raspberry Pi, and other microcontroller platforms.

Technical Overview:

• Degrees of Freedom: 4 (base rotation, shoulder, elbow, gripper)

• Material: Precision-cut acrylic parts

• Servo Compatibility: Requires 4× SG90 or MG90S micro servos (standard JR plug)

• Recommended Voltage: 4.8 – 6 V, standard 5 V MCU power

• Ideal For: Robotics, automation education, programming, and fun DIY builds