Introduction: Wifi Scrolling Display
Nodemcu Wifi Messages Scrolling LED Display
This project uses an LED dot matrix based on the MAX7219 from Maximum, which is an 8-bit LED display driver chip. These chips are designed to control up to 8-digit 7-segment digital LED displays, bar graph displays, or 8x8 LED dot matrix displays. Arduino IDE provides a library called Matrix with sample code written for the MAX7219 chip.
Along with the MAX7219, we will use an ESP8266 and a dot matrix display to display messages sent over the local Wi-Fi network. The code can also be modified to allow these messages to be sent through the internet using different APIs. In this project you can able to display message on led dot matrix using an any android mobile phone or any computer using IP address.
Lets start with project........
Step 1: Required Hardware
- NodeMCU ESP8266
- MAX7219 dot matrix ( you can use multiple matrix , i have used 2)
- Jumper Wires
- Breadboard (optional)
Step 2: Required Software
- Arduino Sofrware Link
Step 3: Connecting the Hardware
* ESP8266 pins need wired are below:
* DIN (data in) on Matrix ---> on ESP8266 pin D7
* Clock(CLK) on Matrix --> on ESP8266 pin D5
* CS pin on Matrix ---> on esp8266 pin D8
Step 4: Circuit Diagram
Step 5: Setting Up Arduino IDE
First we download the library , Now open arduino ide software then click on sketch ==> include library ==> manage library ==> and search for LEDMatrixDriver and download the library.
Step 6: Select Board
Next, select the board , Tools ==> Board ==> Board manager ==> and search for esp8266 and download esp8266 by ESP8266 community.
if you have ESP8266 board installed then follow the steps, Go to Tools ==> Board ==> search for esp8266 and downloade the board.
Step 7: Code
Download the skecth below the link , and open code , and we need to do some changes, just type your wifi ssid and wifi password.
Now , upload the source code.
Step 8: Final Step
After the successful upload of code then turn on your wifi , and wait for connecting nodemcu , after that LED dot matrix show ip address ,or open serial monitor , you will see ip address of nodemcu , Just type this ip address in any browser ,
and here you are finish with project , Enjoy your project.
That’s it for this tutorial. Thanks for reading.
If you have any question about today’s tutorial, please feel free to share via the comment section
I hope it will helpful to you...........................Thanks.