I made a humidity sensor that senses when the temperature is changing and based on that certain events happen
github: github.com/strixt17/Humidity-sensor-Fan
I was originally going to add this to my LED strip that I had lying home. I thought it was going to work but it did not work as it was incompatible. I substituted it with an rgb led that works with arduino. The button on the right controls which state the rgb is in, and the other button is used to turn it off.
GitHub (first time using it): github.com/strixt17/rgb_arduino_controller
Made an arduino security circuit that detects whether an object is in front of it and beeps and displays danger on lcd.