Summary of 8×8 Dotmatrix Scrolling LED display using atmega8515 microcontroller
This project involves creating a Scrolling LED Display using a matrix of 64 LEDs arranged in an 8x8 grid. The LEDs' anodes are driven by the UDN2981 driver IC, while the cathodes are controlled via the ULN2803. An Atmega8515 microcontroller programmed with Bascom AVR is used to control the display. The project includes software that generates digital data for the LED matrix in the form of 9-byte values, where the last byte serves as a blank column to separate images during scrolling, enabling smooth animation on the LED matrix.
Parts used in the Scrolling LED Display project:
- 64 LEDs arranged in an 8x8 matrix
- Driver IC UDN2981 (anode driver)
- Driver IC ULN2803 (cathode driver)
- Atmega8515 microcontroller
- Software programmed with Bascom AVR
Here’s an another project, which makes an Scrolling LED display. Here 64 leds which are connected to an Matrix display. The Anodes are drived through an Driver IC UDN2981 and the cathodes are drived through ULN2803. The Atmega8515 is used in this project to control the display. The microcontroller is programmed with Bascom AVR.
Circuit Diagram
Designing Software
You can also download an software which is used to give digital data for any design with 8x8matrix, please check the screen shots.
It gives 9 bytes of data, in which 8 bytes are the values of the columns.
Demo
For example, look the below image. At column 1 the leds to be glown are the 2.3,4,5. So the equivalent value is 00111100 in binary. The last ninth byte is for a blank column. It is used to separate the 2 images on the display. For more Detail: 8×8 Dotmatrix Scrolling LED display using atmega8515 microcontroller
