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Bluetooth Controlled LED Dot Matrix Display | MAX7219 Scrolling Text Display Project
In this video, I am showing you how to make a Bluetooth-based LED scrolling display using Arduino, HC-05, and an 8-module MAX7219 LED matrix.
You can send any message from your mobile and it will instantly scroll on the display!

You can also control:
✔ Brightness (0–15 levels)
✔ Scrolling Speed (10–200 levels)
✔ Display any live message from your phone

This project is perfect for:
🔹 Notice boards
🔹 Shop name boards
🔹 YouTube subscriber displays
🔹 Smart desk gadgets
🔹 DIY hobby electronics


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🔧 Features of This Project

8-module MAX7219 LED Display

Bluetooth wireless control

Adjustable brightness

Adjustable scroll speed

Custom message display

Smooth animation using MD_Parola library

Works with Android Bluetooth Terminal App



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📲 Bluetooth Commands

Send these commands from your phone:

🔹 Normal Text

Your message here

🔹 Brightness Control (0–15)

BRIGHT 10

🔹 Speed Control (10–200)

SPEED 40


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🛠️ Components Used

Arduino UNO

MAX7219 LED Matrix (8 modules)

HC-05 Bluetooth module

Jumper wires

5V power supply

Mobile Bluetooth Terminal App



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💾 Download Code

in my whatsapp channel.


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📺 Watch More Awesome Projects

👉 FM/AM Radios
👉 LED Matrix Projects
👉 Sensors & Transistors Projects
👉 High voltage & Tesla Coil Experiments


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