Overview Here's an interesting scenario. You bought something across the internet. In the midst of the waiting, you ponder "How do they track the packages?" Usually, an online shipping company has a fleet of magicians that delivers your parcel/package. Along the way, they fight different monsters across dimensions trying to
Overview In this tutorial we are going to Test the 4x4 Resistive Keypad Module using this to make a Simple Math Calculator and Passcode Relay Switch, dont worry because this is an easy project and beginner friendly and I explained this as a very simple and detailed way. Hardware Used 2 - Arduino Uno 1 - 5v Relay 1-