Max7219 Led Matrix Arduino

And for good reason it s a simple and somewhat inexpensive method of controlling 64 leds in either matrix or numeric display form.

Max7219 led matrix arduino. An 8 8 led matrix has 64 leds light emitting diodes which are arranged in the form of a matrix as 8 rows and 8 columns. The second circuit in the arduino 8 8 led matrix interface series is based on bluetooth communication and android phone. Hence it is named as an led. I think the best option is to buy the dot matrix with the max7219 chip as a module it will simplify the wiring.

Using a led dot matrix in your next project can be a way to incorporate some cool little animations. The led matrix is controlled from the max7219 chip through an arduino library. By using these 8x8 matrix modules you can create your own. You can control more than one matrix at a time.

In this project we have interface arduino with an android phone using bluetooth communication and the 8 8 led matrix connected to arduino through max7219 is controlled through a dedicated application on the android phone. Since these modules use the max7219 led driver chip we will be able to turn on and off the 64 leds of each modules using only 3 pins on our arduino. I have included a wiring diagram and many example codes. Connections we are using a small breadboard to put the modules side by side to give a better experience.

This instructable is based on the ledcontrol library. In this tutorial you will learn how to control a max7219 led dot matrix display with arduino. Sooner or later arduino enthusiasts and beginners alike will come across the max7219 ic. Furthermore they can be chained together to control two or more units for even more leds.

You can read a very clear and detailed tutorial about this library at arduino playground. The nice thing about this library is that you can connect up to 8 matrixes together to build larger displays more about this in a future instructable. The max7219 chip makes it easier to control the dot matrix by just using 3 digital pins of the arduino board. Since these modules use the max7219 led driver chip we will be able to turn on and off the 64 leds of each modules using only 3 pins on our arduino.

For that we are going to interface an 8 8 led matrix module with max7129 led driver with arduino uno board.