5ISS-2024-2025-JAULHIAC

This repository contains work I conducted as a part of the courses around the fabrication of a nano-particles based gas sensor and the processing of its data.

Description

This project integrates:

1. Datasheet for a gas sensor to measure gases like Ammonia (NH3), Nitrogen Dioxide (NO2), and Ethanol (C2H6O).
2. A mobile application for control and display, using a Bluetooth connection to a microcontroller (ESP32).
3. An Arduino system, on an ESP32 board to manage sensor data by processing and allowing communication with the mobile app.

Objectives of the project:

• Make a nano-particles based gas sensor in lab.
• Implement an adaptation system for a PCB, to recover measurements from the sensor.
• Monitor gas concentrations and trigger alerts when necessary, from a µC.
• Remotely control features via the app.

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📂 Project Structure

• /software:
  • BT_App.ino: Bluetooth communication between Arduino and the mobile app.
  • Gas_Sensor-OLED_Screen-W.ino: Gas sensor data processing with OLED display.
• /appinventor:
  • HomeScreenApp.png and MainControlScreenApp.png: Mobile app previews.
  • Screen1BlockDiagram.png and Screen2BlockDiagram.png: Application block diagrams for the code behind the app's UI.
• /hardware:
  • Full report on simulation and design: Rapport Elec Gas sensor - JAULHIAC.pdf.
  • Spice simulations: ./hardware/gas sensor simu
• /datasheet:
  • Sensor datasheet: JUMIN_JAULHIAC_GAUCHE_MARIN-MULLER_BOUJON_Datasheet_AIME.pdf.

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Installation and Usage

🔹 Required Hardware:

• WS2024 gas sensor.
• Arduino microcontroller (ESP32 or equivalent, might imply code adaptating).
• Bluetooth module.
• Android smartphone with the MITappinventor app installed.

🔹 Code Installation:

1. Arduino:
   • Upload the .ino files to the Arduino using the IDE.
   • Connect the sensor and Bluetooth module following the provided schematic.
2. Mobile Application:
   • Install the generated APK for Android.
   • Enable Bluetooth and connect the app to the µC.

🔹 Usage:

• Launch the mobile app.
• Connect to the Bluetooth module.
• Use buttons or voice commands to interact.

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Roadmap

Planned Improvements:

• Use LoRa communication, implemented with my fellow group members, to transmit the data.
• Implement additional features to the android app and improve it.
• Integrate a database to log measurements.

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Contact information

For more information or any question about this project, please, do not hesitate to contact me:

• Name: Paul JAULHIAC
• Email: jaulhiac@insa-toulouse.fr
• GitHub: @PaulJaulhiac