Initial Phase
It contains the battery power supplies, providing power to the ESP32 and logic level convertor which in turn powers the motor driver. The ESP32 micro-controller gets temperature data from temperature sensors and uses that data to regulate the temperature in the cooling system. This is done by varying pulse width modulation signal to a motor driver, which then varies the voltage on the peltiers, with Potential Integral Derivative control. Other sensors include flex sensor. A logic level convertor converts the 3.3V from the ESP 32 into 5V for the motor driver. A telegram bot displays the information. This modular approach allows for the addition of more functions and sensors in the future.
Cooling system
The preliminary design for the cooling system is as shown. Each peltier is going to be sandwiched between a blower and a copper plate. A peltier is a device that has two dissimilar conductors, causing one side to be cool and the other side to be hot. So, one blower will take in air from the surrounding and pass it through the hot side of the peltier and then releases it to the surrounding again, thus removing the heat. For the cooling, a copper sheet will be cooled by the cold side of the peltier and therefore reduce the temperature of the wearer via conduction.
Final Product
Final Product images/videos with descriptions.