DIY Programmable Robotic Arm Kit – ESP32 + SG90 Servos – STEM Robotics Project

Overview

A 4-servo, 3D-printed-mechanism robotic arm controlled by an ESP32 — programmable for pick-and-place motion or WiFi-based remote control.

How It Works

1. Four SG90 servo motors actuate the arm's base, joints, and gripper.
2. The ESP32 sends PWM signals to each servo based on programmed sequences.
3. Because the ESP32 has built-in WiFi, the arm can also be controlled remotely over a network.

Complete Parts List

Applications

• Robotics education and multi-servo coordination
• WiFi-controlled robotic arm demos
• Intro to ESP32 programming beyond simple sensor projects

Full Build Guide

Step-by-step instructions and code for this exact project are on Project Hub.

FAQ

Do I need coding experience? No prior experience is required — this kit is built around one specific project, and the full code is freely available. See the build guide above.

What tools do I need beyond what's included? A computer with the free Arduino IDE (or ESP32/ESP8266 board support, where applicable) installed to upload the code. No soldering is required for this build.

Can I reuse the parts afterward? Yes — every component in this kit is a standard, reusable part you can use in future projects, not a single-use kit.