Building an Arduino speed detector using IR technology to measure the speed of a moving object is much more cost-effective, ...

As an upgrade to the project, you can add an LCD monitor to the setup and change the code to display the waste level on the ...

The 16×2 LCD display is a classic in the microcontroller world, and for good reason. Add a couple of wires, download a library, mash out a few lines of code, and your project has a user interface.