Saturday, February 28, 2015

Arduino Project : Arduino 8×8 LED Matrix Wiring Diagram

Robotronicdiagram. - Here is one of the Arduino project with LED matrix. 8×8 LED Matrix modules are now widely available, and fortunately they are easy to use with our favorite Arduino microcontroller. 8×8 LED Matrix module have many applications in real life, such as various types of electronic display panels.

Figure 1. Wiring Diagram
(Source: www.electroschematics.com)

Description

In this project is infact an Arduino with Serially Interfaced MAX7219 Operates an 8X8 LED Matrix to display a heart pattern. 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:

  1. Operating Voltage: DC 4.7V – 5.3V
  2. Typical Voltage: 5V
  3. Operating Current: 320mA
  4. Max Operating Current: 2A

Wiring Instructions
  1. Connect Arduino pin8 to DIN on 8×8 LED Matrix
  2. Connect Arduino pin9 to CS of 8×8 LED Matrix
  3. Connect Arduino pin10 to CLK of 8×8 LED Matrix
  4. Connect an external 5VDC (1A) to VCC of 8×8 LED Matrix
  5. Connect external 5VDC supply’s GND, to the GND of 8×8 LED Matrix Module
Note that the 8x8LED Matrix Module should be common-grounded with Arduino, ie, always remember to interconnect the Arduino GND terminal with the external 5VDC power supply GND terminal. Connect pins according to the instructions given above, and download the sketch into Arduino board. If everything seems right, you can power up the Arduino (and the LED matrix) to see the LED matrix circularly displays a ‘sweetheart’ pattern!

To know more about Arduino Project : Arduino 8×8 LED Matrix Wiring Diagram, please read more this project from the original article HERE.

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