Each buzzer is made of the following parts:
- ESP8266 Node MCU Module (with WiFi)
- Red LED
- Push Button
- 18650 Li-Ion Battery
- 1U 18650 Battery Holder
- Jumper Wires
- CCTV Box (to hold all the parts together)
The Schematic is as follows:
After all the connection are made, the buzzer will look like this:
A small hole was made for the micro-usb port of the Node MCU.
Step 1: First set up a mobile hotspot where you can connect your laptop, and the six buzzers.
Step 2: Download or clone the repository.
Step 3: Move to the code directory
cd code
Step 4: Install virtualenv
For Linux:
pip install virtualenv
For Windows:
pip install virtualenv
Step 5: Make a virtual environment
python -m virtualenv buzz
Step 6: Activate Virtual Environment
For Linux:
source buzz/bin/activate
For Windows:
.\buzz\Scripts\activate
Step 7: Install all dependencies
pip install -r requirements.txt
Step 8: Run manage.py
python manage.py
Step 9: Note down the IP address in the hotspot network. (eg: http://192.168.x.x/5000)
Step 10: Download the Arduino IDE
Step 11: Go to File > Preferences and add 'http://arduino.esp8266.com/stable/package_esp8266com_index.json' to the Additional Board Manager URLs
Step 12: Use the shortcut Ctrl+Shitf+B to open the Board Manager and install the ep8266 board files.
Step 13: Steps 11 and 12 can be followed using this guid: 'https://www.instructables.com/Steps-to-Setup-Arduino-IDE-for-NODEMCU-ESP8266-WiF/'
Step 14: Install the following libraries using the Library Manager (Ctrl+Shift+I) - Arduino_JSON by Arduino
Step 15: Use the code in arduino_ide/code.ino. Replace the WiFi SSID and Password with the SSID and password of the Network. Also change IP address according to the IP address of the server.
Step 16: Change the buzzer number 1/2/3/4/5/6 according to which buzzer you are flashing.
Step 17: Once all buzzers are flashed they will start working as expected.