LED Array Interfacing

AIM:

To display the character in LED Array display using Arduino UNO controller.

Software required:

Arduino IDE
Proteous

PROCEDURE:

Arduino IDE

Step1:Open the Arduino IDE
Step2: Go to file and select new file option
Step3:Type the program
Step4:Go to file and select save option to save the program
Step5:Go to sketch and select verify or compile options
Step6:If no error Hex file will be generated in the temporary folder

Proteus

Step7:Open the Proteus software
Step8:Go to file select new design and click ok button
Step9:Select component mode and click pick devices from the library
Step10:Type the component name in the keyword to select the components and click ok button
Step11:Design the circuit as per the diagram
Step12:Double click the Arduino controller and upload the hex file generated by Arduino IDE
Step13:Click start button and check the output

THEORY:

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.

LED Matrix

An 8 x 8 LED matrix display is used in this project to display the information. LED matrices are available in different styles like single color, dual color, multi-color or RGB LED matrix. They are also available in different dimensions like 5 x 7, 8 x 8, 16 x 16, 32 x 32 etc. Based on the arrangement of the LEDs in the matrix, an LED matrix can be either common row anode or common row cathode. In case of common row anode type LED matrix, the current sources (high or positive voltage) are given to the rows A-D and the current sinks (low or negative voltage or ground) are given to the columns 1-4.

In case of common row cathode type LED matrix, the current sources (high or positive voltage) are given to the columns 1-4 and the current sinks (low or negative voltage or ground) are given to the rows A-D.

The LED matrix used in this project is a common row cathode type LED matrix. While developing the project, the type of LED matrix must be known and the program must be written accordingly.

PROGRAM:

CIRCUIT DIAGRAM:

OUTPUT:

RESULT:

Thus the character was displayed in LED Array display using Arduino UNO controller.