SwimTime is the IoT project for EE3-24 Embedded Systems from team TAY. SwimTime is a device which accompanies the user in the swimming pool and records and tracks your lap times, as well as other relavant data (best, worst, average lap times, and total time for whole session) for your workout. It also uses a temperature sensor to display the temperature of the pool and let the swimmer know if he/she is swimming in ideal conditions.
The main.py file contains all the functions and logic used by the ESP8266. In order for the device to function correctly, both main.py and ads1115.py must be uploaded on the board. The ads1115.py contains functions used for driving the ADC Analog-to-Digital converter. The ADC is used to convert the analog output of our ultrasonic range finder sensor into digital signals and then push it to the board via I2C. The temperature and humidity sensor is in turn linked directly to the board as it has an I2C interface.
MQTT protocol is used to transmit and receive data on the esp8266. We use the open-broker provided by io.adafruit.com which also provides a dashboard to analyse data received from the sensor and act as a user interface. Through the dashboard you are able to select the number of laps the user wants to swim and send the "start" command, as well as see your lap times, statistical data about your fastest, slowest, and average laps and a temperature sensor which dispays the water temperature.
To use the device just connect to power (for simplicity we use the USB port) and press the reset button. The device will configure automatically and connect to the Wi-Fi (when the red LED is on the board it is successfully connected to the Wi-Fi). Then just select the number of laps you want to complete and press "start" on the dashboard. The board will initiate the countdown and will start timing you laps after the countdown (you should hear a buzzer beep 3 times).
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