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# ☕ Coffee Brewing Level Prediction Based on Spectroscopy Data Using Deep Learning
This repository contains the complete pipeline for a thesis project that predicts **coffee brewing levels** using **spectroscopy data** and **deep learning models**, later deployed on a **Raspberry Pi** with a real-time interface using **OLED display** and a **physical button**.
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## 📚 Description
The goal of this project is to classify brewed coffee into categories such as **Underdeveloped**, **Ideal**, or **Bitter**, based on spectral data obtained using the **AS7265x spectroscopy sensor**. A deep learning model is trained using Python and TensorFlow, then converted into **TensorFlow Lite** and deployed on a physical prototype for real-time prediction.
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## 🧪 Data Collection
- **Sensor**: [AS7265x Triad Spectral Sensor](https://www.sparkfun.com/sparkfun-triad-spectroscopy-sensor-as7265x-qwiic.html)
- **Platform**: Raspberry Pi
- **Categories**: Coffee brewing levels
- **Format**: Raw 18-channel spectral data saved in `.csv` format
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## 🧠 Modeling
### Main Libraries for Modeling:
- `pandas`: data manipulation and preprocessing
- `seaborn`: data visualization and EDA
- `tensorflow`: deep learning model training and conversion to `.tflite`
- `numpy`: numerical operations
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## 📟 Prototype Deployment
A physical prototype is built using:
- **Raspberry Pi**
- **AS7265x Spectroscopy Sensor**
- **SSD1306 OLED Display**
- **Push Button**
- **TensorFlow Lite Interpreter**