ESP32-IoT-project

This is the IOT project based on ESP32 microcontroller.

• project html file is just for viewing the page only.

Project photo and Web server Screenshot

Feature Demo and presentation

You should go watch at least one of the videos below before watching the presentation

• Part1: https://www.youtube.com/watch?v=ZbPQufXMKdA
• Part2: https://www.youtube.com/watch?v=1BdyQ2VX56s
• Presentation: https://www.youtube.com/watch?v=VZbbzU-rg3w
• Presentation slide: https://docs.google.com/presentation/d/12Sihf_v3e3GYwmaIVO8cE9-19D6UETqL85ZU46FzRto/edit#slide=id.g147508dc7ff_0_550

Backend and Frontend structure

ESP32 to Arduino program

ESP32's pwm somehow was not recognized by the server motors(may be the frequency was too high). Arduino was used to take ESP32 pwm as analog pins input. Smoothing the PWM signal into analog signal needed the capacitor. Capacitor should be as big as possible (this project used 100uF capacitors). Here is some advantage for using larger capacitor:

• Less voltage rippling
• Faster charging time
• Thus, the smoothed PWM signal can be viewed by Arduino as analog signal input like constant 5V

Here is the diagram before🟦 and after🟥 smoothing the pwm

Future improvement

• Android app for this application
• Modify the naming of the program to make it more readable