DIY Acrylic 4DOF Robot Arm Manipulator Kit (Unassembled, No Servos)
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Prices updated: 14 Oct 2026
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About this product
An unassembled acrylic robot arm kit with four degrees of freedom, designed for learning robotic manipulation and servo control. Four SG90S servo motors are required but are not included, so the arm is driven separately by a microcontroller such as an Arduino.
Specifications
- Degrees of Freedom
- 4 DOF
- Material
- Acrylic
- Servos Required
- 4 x SG90S (not included)
- Assembly
- Unassembled
Frequently asked questions
What servos does this arm need?
The listing requires four SG90S servo motors, which are not included. SG90-class servos typically operate from about 4.8 V to 6 V, so check the datasheet of the servos you buy.
How should I power the servos and control them?
Control each servo through a PWM signal pin on an Arduino or similar board. Power the servos from a separate 5 V supply with a shared ground rather than the board's 5 V pin, because four servos can draw enough current to cause resets or erratic movement.
