Beer Tokens Project by Regev Avraham, Ido Tausi, Afek Nahum:

Details about the project

A smart system that identifies users and prints drink vouchers using student IDs and a thermal printer.

Main features:

• Scans student ID (magnetic/barcode) for quick user verification
• Checks voucher eligibility in real-time via a Firebase database
• Instantly prints a custom voucher with event-specific details

Folder description :

• ESP32: source code for the esp side (firmware).
  • clion_proj - all the source code of the esp side, having stub methods to allow programing in CLion IDE, without the esp32 SDK and long compile times. using a python script, the code can be converted to a format that can be uploaded to the esp32, and moved to the arduino_proj folder.
    • Parameters: contains description of parameters and settings that can be modified in the code
  • arduino_proj - the source code to be loaded to the esp32
  • python_mock - a python script that simulates an esp32 device to allow testing the app with multiple esp devices.
• Documentation:
  • wiring diagram
  • esp control flow diagram
  • app control flow
  • physical setup
  • led state explanation
• flutter_app : dart code for our Flutter app.

ESP32 SDK version used in this project:

esp32 - version 3.2.1 Arduino AVR Boards 1.8.6

Arduino/ESP32 libraries used in this project:

• WifiManager - version 2.0.17
• FirebaseClient - version 2.1.5
• EspUsbHost - version 1.0.2
• ArduinoJson - version 7.4.2
• Adafruit NeoPixel - NeoPixel 1.15.1

Hardware used in this project:

• 1 - esp32-s3-wroom-1
• 1 - 3 led strip
• 1 - HID magnetic stripe reader
• 1 - GM65 barcode reader
• 1 - 58mm thermal printer
• 1 - 470 microfarad capacitor 50v

Connection diagram:

Project Poster:

This project is part of ICST - The Interdisciplinary Center for Smart Technologies, Taub Faculty of Computer Science, Technion https://icst.cs.technion.ac.il/