OUNA 6DOF Metal Robotic Arm Kit with Servos

OUNA 6DOF Metal Robotic Arm Basic Kit + 6 Digital Servos MG996

Product Description

The OUNA 6DOF Metal Robotic Arm Basic Kit is a mechanical building kit for anyone learning robotics, automation, or embedded programming through hands-on construction. It provides the full metal frame for a six-degree-of-freedom robotic arm along with six MG996 digital servo motors, giving builders the mechanical foundation needed to assemble a functional arm capable of base rotation, shoulder and elbow movement, wrist articulation, wrist rotation, and gripper control.

Each of the arm's six joints is driven by an MG996 digital servo, a widely used high-torque servo that delivers around 11 kg·cm of torque and operates on a working voltage of roughly 4.8V to 7.2V, drawing a modest no-load current of about 100mA. This combination gives the arm enough strength to lift and manipulate small objects while remaining efficient enough to run from common power sources used in Arduino and similar microcontroller projects. The servos connect through a standard three-wire interface, making wiring straightforward for anyone already familiar with basic servo control.

The frame itself is built from metal alloy components, which adds rigidity and durability compared to plastic robotic arm kits, and the joints are connected using ball bearings that keep friction low and movement smooth across all six axes. This matters for anyone writing inverse kinematics code or fine-tuning gripper positioning, since mechanical play or friction in the joints can make precise control noticeably harder to achieve.

As a basic kit, this package focuses on the mechanical build: the metal frame and the six servos. It does not include a microcontroller or motor driver board, which means builders supply their own control electronics, commonly an Arduino, ESP32, or STM32 board paired with a PWM driver such as a PCA9685 to manage all six servo channels simultaneously. This open-ended approach is well suited to students and hobbyists who want to design their own control logic rather than work within a fixed, pre-programmed system.

Because the kit ships unassembled, it also doubles as a practical mechanical assembly exercise, useful in classroom robotics programs, university coursework, and personal projects where understanding how a multi-joint arm goes together is as valuable as the finished result. Builders who want a flexible six-axis platform to pair with their own control board, without paying for electronics they may not need, will find this kit a straightforward starting point.

Features

• Full 6 degrees of freedom: base, shoulder, elbow, wrist, wrist rotation, and gripper

• Durable metal alloy frame construction for added rigidity over plastic kits

• Six included MG996 digital servo motors for consistent torque across all joints

• Ball bearing joints for smooth, low-friction movement

• Standard three-wire servo connection for straightforward wiring

• Compatible with Arduino, ESP32, STM32, and similar microcontrollers

• Open-ended control setup, ideal for custom PWM or PCA9685-based driver projects

• Unassembled build format suited to hands-on robotics and mechanical learning

Specifications

• Degrees of Freedom: 6 (base, shoulder, elbow, wrist, wrist rotation, gripper)

• Frame Material: Metal alloy

• Servo Model: MG996 digital servo

• Servo Working Voltage: 4.8V – 7.2V

• Servo No-Load Current: Approximately 100mA

• Servo Torque: Approximately 11 kg·cm

• Servo Connection: 3-wire (power, ground, signal)

• Joint Movement: Ball bearing joints

• Compatible Controllers: Arduino, ESP32, STM32, and other microcontrollers

Applications

• Arduino and microcontroller robotics education

• STEM and university robotics coursework

• DIY robotic arm and manipulator projects

• Inverse kinematics and motion control programming practice

• Custom PWM/PCA9685 servo control projects

• Robotics club and classroom building exercises

• Prototyping small-scale pick-and-place mechanisms

Package Includes

• 1x Metal 6DOF Robotic Arm Frame (unassembled parts)

• 6x MG996 Digital Servo Motors

• Mounting Screws and Assembly Hardware