esp8266-mqtt-matrix

Code for notifications via mqtt with Esp8266 and 8x8 max7219 driven led matrix

• You will need an Esp8266 board , five jumpers and an 8x8 max7219 driven led matrix.

• I use it with a mosquitto server, openhab 2.0 (with openhab cloud), and ifttt.

• Dont forget to install openhab cloud bidding , enable your items through the PAPER UI , and connect it to ifttt.

• My code is not storage efficient (pretty noob with c),be aware it could not fit your device.

• This code uses librarys that are not mine , all credits to the developers that created them. Such as : https://github.com/esp8266/Arduino/tree/master/libraries/ESP8266WiFi
  https://github.com/knolleary/pubsubclient
  https://github.com/wayoda/LedControl

• First release has only youtube and gmail icons.This web is neat for drawing new ones:
  https://xantorohara.github.io/led-matrix-editor/

• It works with one or more displays , eventhough the code is now working with only one.

• You are free to use it and edit it as you want , also i'll upload any provided change if it performs better in any way.

• Schematics of the connection:

    Display<+++++>esp<---->wifi<----->mqtt + openhab
                                                 ^
                                                 |
                                                 |
                                              internet(openhab cloud)<-----> ifttt
                                                                                ^
               new Gmail--------------------------------------------------------|                      
               new Youtube video -----------------------------------------------|                      
  

• You will have to edit this parameters to suit your configuration.

  const char* ssid = "WLAN_XXXX"; // red wifi
  const char* password =  "PASSWORD"; // contraseña
  const char* mqttServer = "server.lan/"; // direccion servidor mqtt
  const int mqttPort = 1883; // puerto de escucha del servidor mqtt
  const char* mqttUser = "USER"; // usuario mqtt
  const char* mqttPassword = "USERPASS"; // contraseña mqtt
  const char* tp = "cmnd/EspNotifier"; // hilo de sub/pub
  int data = 14;    // DIN pin of MAX7219 module
  int load = 13;    // CS pin of MAX7219 module
  int clock = 12;  // CLK pin of MAX7219 module
  int maxInUse = 1;  //how many MAX7219 are connected
  

SerialToMatrix

• You will need an Esp8266 board , five jumpers and an 8x8 max7219 driven led matrix.

• My code is not storage efficient (pretty noob with c),be aware it could not fit your device.

• This code uses librarys that are not mine , all credits to the developers that created them. Such as : https://github.com/t3chguy/arudino-maxmatrix-library

• It works with one or more displays , eventhough the code is now working with only one.

• You are free to use it and edit it as you want , also i'll upload any provided change if it performs better in any way.

• You will have to edit this parameters to suit your configuration.

     int data = 14;    // DIN pin of MAX7219 module
     int load = 13;    // CS pin of MAX7219 module
     int clock = 12;  // CLK pin of MAX7219 module
     int maxInUse = 1;  //how many MAX7219 are connected
  

• Scheme

    Serial:
    Please enter something: 
            hello world
    Please enter speed: 
            70
            ||
             ------------------------------->Matrix(showing "hello world" at speed "70")