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Lesson 15 MAX7219 LED Dot Matrix Module
Overview
In this tutorial we will connect a MAX7219 and scroll the text across.
Since these modules use the MAX7219 LED driver chip, we will be able to turn on
and off the 64 LEDs of each module, using only 3 pins on our MEGA2560.
Component Required:
(1) x Elegoo Mega2560 R3
(1) x Max7219 module
(5) x F-M wires (Female to Male DuPont wires)
Component Introduction
MAX7219 LED Dot Matrix Module
Our project is in fact an Arduino with Serially Interfaced MAX7219 Operates an 8X8
LED Matrix .The MAX7219 IC is a serial input/output common-cathode display driver
that interfaces microprocessors to a 7-segment numeric LED displays of up to 8 digits,
bar-graph displays, or 64 individual LEDs. For convenience, here an 8×8 LED matrix,
integrated with a MAX7219 IC setup, available as a pre-wired module is used. Typical
specification of this LED Matrix Module is shown below:
Operating Voltage: DC 4.7V – 5.3V
Typical Voltage: 5V
Operating Current: 320mA
Max Operating Current: 2A