This project presents a wireless communication solution between an ec-Flex from Zimmer&Peacock and a homemade smartwatch. An on-skin glucose biosensor is connected to the ec-Flex. A laptop receives the data by BLE and sends it in real-time to the smartwatch microcontroller by Wi-Fi.
1. Download the project.
2. In in the get_ecflex_charac.py script:
- Enter the MAC address of the ec-Flex device.
- Run the code.
- Recover the addresses of handles 17, 21, 24, 27, 30, 96, and 99 in the vendor service.
3. In the server.py script:
- Define the port to use.
4. In the get_ecflex_data.py script:
- Enter the handles addresses.
- Fill the access path of the database.db and schema.sql files.
- Run the code.
5. In the wifi_client.ino script:
- Define your network SSID and password.
- Enter your domain.
- Define the port to use.
- Run the code.
You need an ec-Flex board, an ec-Flex battery and a glucose biosensor from Zimmer&Peacock products website. A tutorial to build the smartwatch is available here. You have to replace the Arduino Uno by a WeMos D1 mini.
To run the programs, you need bleak, asyncio, sqlite3, multiprocessing, struct, os, socket, and time Python modules. The PyBluez Python extension module is also requiered.
All the scripts are working and successfully transmit the data from the ec-Flex to the laptop to the smartwatch. The data storage on a local database is still under development.
- Write a python script to read the database.
- Write an Arduino script using the GFX library that displays time, glucose concentration, and temperature (numerical values) on the GC9A01 screen.
- Write an Arduino script using the GFX library that displays a curve representing the glucose concentration evolution on the GC9A01 screen.
