The first parameter is the text that you want to scroll. Inside the setup() function, after initializing the LED matrix, setting its brightness and clearing the display, we will call the displayScroll() function to set up the scrolling action. Rest of the code is similar to the one which we discussed above. We will discuss the parts where we are incorporating the scrolling feature. #include ĭisplay.displayScroll('SCROLL', PA_RIGHT, PA_SCROLL_LEFT, 150) This sketch will scroll a text from right to left at a set speed.

Open your Arduino IDE and go to File > New. MAX7219 Dot Matrix Arduino Sketch: Scrolling Text If you are using the generic model instead of FC16 then uncomment the second line and comment the line where we are defining FC_16HW. Secondly, it is very important to define the correct type of MAX7219 LED matrix that you are using. Moreover, we have included the MAX7219 module libraries that we previously installed for the proper functionality of the LED matrix. We are including SPI.h as we are using SPI communication protocol between the two devices. Including Librariesįirstly, we will include all the necessary libraries for this project. In this part we will discuss how the code works. MD_Parola Display = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES) #define HARDWARE_TYPE MD_MAX72XX::GENERIC_HW #define HARDWARE_TYPE MD_MAX72XX::FC16_HW Uncomment according to your hardware type You will have to specify your model type and the maximum number of devices (dot matrix displays) for the sketch given below to work properly.

Ic max7219 bascom avr