๐ ๏ธ MAKER GUIDEApr 30, 2026โขโฑ๏ธ 1 min readโข๐ณ๐ต Tested in Nepal
Wireless Wi-Fi Digital Scrolling LED Notice Board with MAX7219 & ESP8266
Display real-time notices, exam updates, and stock tickers on an 8x32 cascaded LED dot matrix display updated via a smartphone web page.
๐ ๏ธ BILL OF MATERIALS (BOM)
Required Hardware & Component Checklist
Curated components verified for this project. Check the items you need, adjust quantities, and add straight to cart:
Estimated Total (3/3 items):
NPRย 1,870
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All parts selected
NPRย 850
NPRย 750
NPRย 270
Wireless Wi-Fi Digital Scrolling LED Notice Board with MAX7219 & ESP8266
Display messages on a bright MAX7219 4-in-1 Dot Matrix LED Display Module, updated wirelessly from any phone browser connected to the NodeMCU ESP8266 web server.
Hardware Bill of Materials:
- LED Matrix: MAX7219 Dot Matrix 4 in 1 LED Display Module with Cable
- Microcontroller: Wireless module CH340G NodeMCU V3 ESP8266
- Power Supply: 5V 2A Power Adapter
Circuit Pinout & Wiring Connections:
| MAX7219 4-in-1 Pin | NodeMCU ESP8266 Pin | Function / Description |
|---|---|---|
| MAX7219 VCC / GND | 5V (VIN) / GND | High Brightness LED Matrix Power |
| MAX7219 DIN | Pin D7 (GPIO 13 - MOSI) | Serial Pixel Data Stream |
| MAX7219 CS | Pin D8 (GPIO 15 - CS) | Display Chip Select Latch |
| MAX7219 CLK | Pin D5 (GPIO 14 - SCK) | Serial Clock Line |
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