LED Messaging With Arduino

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In this project, you'll use an 8x8 LED matrix to write a scrolling message.

This project is a simple version of another instructable by CarterW16 using only one LED matrix. Check out that project to see how to link more together.

To get started you'll need:

A Uno microcontroller

A breadboard

Jumper wires

An LED matrix (8x8)

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Step 1: Connecting to Power

Use a jumper wire to connect the “5v” power output on the microcontroller to the first hole in the positive line on the long edge of your breadboard.

Step 2: Connecting to Ground

Use a jumper wire to connect the GND power output on the microcontroller to the negative line on the long edge of your breadboard.

Step 3: Prepare the LED Matrix

Place the LED matrix near your Arduino to prepare to hook it up.

Step 4: Connect VCC

Connect the VCC pin on the LED matrix to the long positive row on your breadboard using a male-female jumper wire.

Step 5: Connect GND

Use a male-female jumper wire to connect the GND pin on the LED matrix to the long negative row on your breadboard.

Step 6: Connect DIN

Connect the pin marked “DIN” on the LED matrix to pin 12 on your Arduino using a male-female jumper wire.

Step 7: Connect CS

Connect the “CS” pin on the LED matrix to pin 11 on the Arduino.

Some of the LED matrix boards have the CLK pin in a different location, so be sure to read the small letters on your matrix to be sure you are making the right connection.

Step 8: Connect CLK

Connect the “CLK” pin on the LED matrix to pin 10 on the Arduino.

Some of the LED matrix boards have the CLK pin in a different location, so be sure to read the small letters on your matrix to be sure you are making the right connection.

Step 9: Get Your Code

Use the Arduino web editor to get the code.

You'll also need to download and install the MaxMatrix library.

Step 10: Watch Your Message Scroll!

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