Build a 6DOF Robot Arm with Inverse Kinematics Solver — Arduino Mega & PCA9685 Kit

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Type a set of XYZ coordinates into the serial monitor, and watch your robot arm’s end-effector move to that exact point. This kit transforms abstract inverse kinematics equations into a physical, programmable arm you build and code from scratch. Whether you’re prototyping a pick-and-place system for a hackathon or deepening your mechatronics understanding, this project gives you a rare chance to see mathematical models drive real motion—without hunting down mismatched parts across multiple suppliers.

What You'll Build

A 3-axis articulated arm with a functional gripper, driven by MG90S and SG90 servos via a PCA9685 I2C driver. An Arduino Mega runs the IK solver, accepting target coordinates through a 4x4 keypad and displaying current joint angles on a 0.96-inch OLED. The arm follows typed XYZ goals with smooth, coordinated servo movements, demonstrating closed-loop positional control fundamentals.

What You'll Learn

• Coding a numerical inverse kinematics solver from forward kinematics equations
• Controlling multiple servos simultaneously with the PCA9685 I2C PWM driver
• Interfacing a 4x4 matrix keypad and OLED display with Arduino Mega
• Managing servo power demands using bulk decoupling capacitors and a 5V 3A supply

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for B.Tech ECE, EEE and Mechanical engineering students who need a tangible robotics project for their semester lab or capstone. It’s also ideal for Smart India Hackathon teams building manipulators, and ATL Tinkering Lab mentors who want to demonstrate inverse kinematics principles. If you’re preparing for a robotics competition at IITs, NITs or BITS Pilani, this kit provides a rigorous platform that connects theory directly to motion.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.

Choose your assembly option:

• Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
• Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.