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In this project, we will learn about LED Matrix Displays and two different projects on Arduino 8×8 LED Matrix Interface. The first project will be a simple interface between Arduino and 8X8 LED Matrix to display information (even scrolling information and images can be displayed) and the second project will be an advanced project where the 8×8 LED Matrix is controlled through an Android device. An LED matrix is a two dimensional array of LEDs that can be used to display symbols, characters or even images. Based on the orientation of the LEDs in the matrix, there can be two types of LED matrices.They are Common Row Anode and Common Row Cathode. Project 1: Simple Arduino LED Matrix Interface Circuit Diagram Components Required Arduino Uno board LED Matrix – 8 x 8 LED dot matrix IC1  – MAX 7219 R1 – 10 KΩ C1 – 0.1 µF C2 – 10 µF Component Description Arduino Uno The project is based on the Arduino Uno microcontroller board. Out of th