Build a Motion-Activated Nerf Turret with Arduino Mega and Servos

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

Imagine a sentry that guards your room, detects motion, and autonomously fires a foam dart at an intruder. This kit turns that idea into a working robot. You'll wire a PIR sensor, two servos on a pan-tilt bracket, and a flywheel motor driver to an Arduino board, then program the logic that makes the turret scan, lock on, and shoot. The entire assembly fits on a breadboard and uses safe IR-based aiming to keep the project non-hazardous and fun.

What You'll Build

By the end of the build, you'll have a desk-mounted sentry turret that rotates 180 degrees horizontally and tilts vertically to track movement. When the PIR sensor detects a person, the Arduino commands the pan-tilt servos to align the Nerf blaster and triggers the DC motor via an L298N driver to launch a dart. The flywheel mechanism ensures consistent, gentle shots-no compressed air or dangerous springs. You can later expand it with Wi-Fi or camera modules for remote targeting.

What You'll Learn

• How to interface a PIR motion sensor with Arduino and set sensitivity thresholds
• Precise servo control to create a real-time pan-tilt aiming system
• Motor driver operation using L298N and flywheel speed modulation
• Writing Arduino code that coordinates sensor input, servo angles, and motor activation

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is designed for intermediate makers familiar with basic Arduino. It's perfect for CBSE Class 11-12 students building a physics or computer science project, B.Tech ECE/EEE second-year mini-project candidates, and teams preparing for Smart India Hackathon robotics challenges. ATL Tinkering Lab mentors will find it a ready-made automation demonstrator, and engineering students at IIT, NIT, VIT, or BITS can use it to prototype a sentry concept without source-guessing components.

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.