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In this Arduino project I'll show you how to make a mini dot matrix display board utilising two 8 by 8 LED modules.

For this Project You'll need the following components:

  • Arduino Compatible board
  • Jumper wires
  • Prototyping Breadboard
  • USB cable for the Arduino board
  • Two 8 by 8 dot matrix displays

Project Downloads:

To begin this project You'll need to upload the project code to the Arduino board, I'll be using the Arduino IDE to do this.

Before we can upload the code to the board first install the MaxMatrix library, this can be done by downloading the library and extracting it in the Libraries directory.

we can then launch the Arduino IDE and open the Project code file, in this file you can enter the amount of display modules used and the text that you would like to be displayed. we can now connect the Arduino board to the computer and upload the code.

With the code now on the Arduino board, we can connect the board to the display modules.

I'm going to insert the Arduino board and he dot matrix displays into the breadboard, followed by connecting the input pins of the first module to the pins of Arduino. Then Connect the output pins of the first module to the second. You can continue to connect more modules to the chain,but you'll need to specify how many you are using in the code.

Connections from Arduino to module:

  • Digital Pin 10 -> CLK
  • Digital Pin 9 -> CS
  • Digital Pin 8 -> DIN
  • GND -> GND
  • 5V -> VCC

we can now power up the Arduino board, you should now see the text on the displays.

<p>I made it. Perfect program. </p><p>One problem is about the circuit diagram is wrong. Wires should be: </p><p>Arduino --&gt; Input 1st Led Board</p><p>Output 1st Led Board --&gt; Input 2nd Led Board</p><p>You can connect as many as Led Board you want just change the #number of board in the code.</p><p>Thank you so much !!!</p>
<p>maxmatrix missing and the library is wrong diagram entry and exit to the second matrix (one is entarda and the other is output)</p>
<p>The plot has an error in DIN and DOUT</p>
<p>He good friend,</p><p>WannaDuino here, i made this almost 1 year ago. And came across this IBLE from THE MAKER of the library and sketch i used that time.</p><p>I wanna Thank you for that, its still on a breadboard and still with my FIRST Nano with my first ever soldering job on those tiny pin headers. ( its something i always keep like this, Also because of the hideous soldering back then of me. ) so again THANK YOU for your helping to put it on the NET. I am grateful and thank you with high honor.</p><p>WannaDuino!!!</p>
<p>Nice! I would love to see more photos for a step-by-step guide! Thanks for sharing your project!</p>
<p>Thanks for the feedback.</p>

About This Instructable

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Bio: I am the founder of MrHobbyElectronics, a YouTube channel for Makers. Drop my the YouTube channel and say hi.
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