Build a Raspberry Pi 5 Robot That Finds Odour Sources Using Gradient Ascent Navigation

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

Give your robot a sense of smell and a smart navigation brain. This kit equips a Raspberry Pi 5 with four metal-oxide gas sensors, high-resolution ADC, and a fast NVMe SSD, then puts everything on a moving chassis. Instead of blindly wandering, the robot calculates local odour gradients and climbs them — a technique used in industrial leak detection and search-and-rescue research. You’ll build the entire system from components up and watch it steer toward a hidden scent source without any external beacons.

What You'll Build

A self-navigating robot that mounts two MQ-3 and two MQ-135 sensors at the front, sensing alcohol and volatile organic compounds with precision. The Raspberry Pi 5 reads differential sensor values via an ADS1115 ADC, runs an onboard gradient ascent algorithm, and commands the Cytron motor driver to turn toward the strongest concentration. The result is live odour source localisation — a project that blends environmental sensing, edge AI, and control theory in one moving platform.

What You'll Learn

• Calibrating multiple MQ‑3 and MQ‑135 gas sensors for relative gradient estimation
• Implementing a gradient ascent algorithm in Python on the Raspberry Pi 5
• Acquiring high‑resolution analog signals using the ADS1115 ADC over I²C
• Integrating a Cytron motor driver with DC motors and chassis for smooth differential steering

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

If you're a CBSE Class 11–12 student exploring AI robotics in the ATL Tinkering Lab, this kit turns a simulation concept into a real mobile platform. B.Tech ECE/EEE learners can use it for environmental monitoring capstone projects, while Smart India Hackathon teams will find the plume‑tracing logic directly applicable to gas leak detection challenges. It’s also ideal for undergraduate researchers at IIT, NIT, VIT, and BITS campuses building proof‑of‑concept autonomous scent trackers.

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.