LED Matrix (100 WS2812 LEDs)

10x10 WS2812 LED grid display controlled with an ESP8266

How To Build

Components

• WS2812 Addressable LED (strips are easy to set up) - 100
• ESP8266
• 20k potentiometer
• Push button
• 5V Power supply (3A or higher)
• 1 x 10K resistor

Building

• Wire the led grid as shown in the image
• Connect the Grid Signal in wire to ESP8266 pin D1 (GPIO 5)
• Connect the potentiometer to the analog input (A0) of the ESP. (Rifer this guide for more details)
• Connect the switch to D0 (GPIO 16) of the ESP and pull it down using the resister. (Fifer this guide for more details)
• Install all the required libraries to Arduino to compile the code
  • ESP8266WiFi.h
  • Adafruit_NeoPixel.h
  • NTPClient.h
  • WiFiUdp.h
  • ESP8266WebServer.h
  • Adafruit_NeoPixel.h
  • Adafruit_GFX.h
  • Adafruit_NeoMatrix.h
  • Fonts/FreeSerif9pt7b.h
• Set the Wi-Fi Access point name and password and upload the code to ESP8266

How to operate

This Display has 4 Modes

1. Clock Mode - Obtain the time from internet timeserver and display it
2. White Light mode - It can be used as a white led light
3. Red Light mode - It can be used as a red led light
4. Display Mode - User can access the web server and give commands to draw anything you like
5. White Light mode with brightness control - It can be used as a white led light and the brightness can be controlled while display is white

Use the button to switch between modes Rotate the potentiometer while holding the butten to set the brightness

You can use the "LED Matrix.html" file to send display data in the Display Mode

• Open the html file using a web browser on a device connected to the same network as the ESP8266.
• Put the Ip address in the Server address input box
• Start sending patterns to draw on the matrix

Playing Randoms

Randoms.mp4