Oil Tester Sensor

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 Project "PureDrop": Innovating Food Safety with IoT & AI 🛡️


The Problem: What’s in Your Food? 🍔

We all love street food, but have you ever paused to wonder about the quality of the oil being used? Reused, overheated, and adulterated oil is a silent health hazard, often leading to severe toxicity and long-term illnesses. As consumers, we usually have no way to verify if the oil in our food is safe.

At our college’s Innovation and Design Thinking (IDT) Lab, my team and I decided to change that. We accepted the challenge to build a device that could impact society directly.

The Solution: A Portable Oil Purity Tester 🧪

We built a compact, low-cost "Oil Quality Monitoring System." It is designed to give a simple "Safe/Unsafe" analysis in seconds


"The Prototype. Our "Oil Purity Tester" in its final form,
 featuring a waterproof probe and OLED display"

How We Built It: A Collaboration with AI 🤖

None of us were experts in electronics when we started. We combined classroom theory with modern tools. We utilized AI assistants like ChatGPT and Gemini to help us design the circuit framework and debug the code. This project proved to us that modern engineering is about resourcefulness as much as it is about coding.


 The "Engine Room"

What’s Inside the Box? ⚙️

It looks complex, but the science inside is straightforward. Here are the core components:

  • 🧠 The Brain: An Arduino Microcontroller processes the data.

  • 🌡️ The Probe: We used a DS18B20 Waterproof Probe to measure real-time temperature. This prevents the oil from reaching its "Smoking Point" where it becomes carcinogenic.

  • 👁️ The Eye: Inside the device, a TCS3200 Color Sensor analyzes the oil's color and turbidity (cloudiness) to detect impurities.

  • 📊 The Display: An OLED Screen shows the results instantly.





Conclusion: Technology for the Common Man

This project taught us that engineering isn't just about wires and code; it's about empathy. Our vision is simple: if we can empower regular households and inspectors with low-cost tech like this, we can prevent health issues before they even begin.

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