A wise way to organize your keys neatly

Eight Steps to complete an interesting time-killing Whack-a-Mole Game!

In this project, use a speaker to make the sound when you're dialing, via programming on Arduino

Different propeller provides different flying performance, so this project is just for reference for hobbyists.

This project used Multi-Control's keyboard function. Here a carrot is used to act as keys, since any conductors can be used to replace, try