مشروع الساعة Clock و التاريخ على MAX7219 LED Matrix باستخدام ESP8266 NodeMCU

 

- قم بتوصيل ESP8266 بشاشة 8x8 MAX7219 4 مقاطع ولديك لوحة رسائل أو في هذا المثال ساعة مع وقت مشتق من بروتوكول وقت الشبكة. يمكن أيضًا استخدام الشاشة لرسم رسومات مثل المربعات والمثلثات والدوائر. انظر مكتبة

- المكونات الاساسية :

- esp8266 nodemcu

- Max7219 led matrix display

- Jumper wires

- مخطط الرسم البياني : 

- تحميل الكود أردوينو :

// Project : ESP8266 LED Matrix Scrolling Clock

// By : DIY Channel

// My Youtube Channel : https://www.youtube.com/c/DIYChannel2019

#ifdef ESP8266

  #include <WiFi.h>

#else

  #include <ESP8266WiFi.h>

#endif

#include <SPI.h>

#include <Adafruit_GFX.h>

#include <Max72xxPanel.h>

#include <time.h>

int pinCS = D4; // Attach CS to this pin, DIN to MOSI and CLK to SCK (cf http://arduino.cc/en/Reference/SPI )

int numberOfHorizontalDisplays = 4;

int numberOfVerticalDisplays   = 1;

const byte buffer_size = 45;

char time_value[buffer_size];

// LED Matrix Pin -> ESP8266 Pin

// Vcc            -> 3v  (3V on NodeMCU 3V3 on WEMOS)

// Gnd            -> Gnd (G on NodeMCU)

// DIN            -> D7  (Same Pin for WEMOS)

// CS             -> D4  (Same Pin for WEMOS)

// CLK            -> D5  (Same Pin for WEMOS)

Max72xxPanel matrix = Max72xxPanel(pinCS, numberOfHorizontalDisplays, numberOfVerticalDisplays);

int wait = 70; // In milliseconds

int spacer = 1;

int width  = 5 + spacer; // The font width is 5 pixels

const char *ssid      = "your_SSID";

const char *password  = "your_PASSWORD";

void setup() {

  Serial.begin(115200);

  WiFi.begin(ssid,password);

  configTime(0 * 3600, 0, "pool.ntp.org", "time.nist.gov");

  // See https://github.com/nayarsystems/posix_tz_db/blob/master/zones.csv for Timezone codes for your region

  setenv("TZ", "GMT0BST,M3.5.0/01,M10.5.0/02",1);

  matrix.setIntensity(0); // Use a value between 0 and 15 for brightness

  matrix.setRotation(0, 1);    // The first display is position upside down

  matrix.setRotation(1, 1);    // The first display is position upside down

  matrix.setRotation(2, 1);    // The first display is position upside down

  matrix.setRotation(3, 1);    // The first display is position upside down

}

void loop() {

  matrix.fillScreen(LOW);

  String time = get_time();

  time.trim();

  Serial.println(time);

  time.substring(23,28).toCharArray(time_value, 10); 

  Serial.println("HH:MM");

  Serial.println(time_value);

  //( Sun  21-07-19 ) ( PM 12:52:12 )

  matrix.drawChar(2,0, time_value[0], HIGH,LOW,1); // H

  matrix.drawChar(8,0, time_value[1], HIGH,LOW,1); // HH

  matrix.drawChar(14,0,time_value[2], HIGH,LOW,1); // HH:

  matrix.drawChar(20,0,time_value[3], HIGH,LOW,1); // HH:M

  matrix.drawChar(26,0,time_value[4], HIGH,LOW,1); // HH:MM

  matrix.write(); // Send bitmap to display

  delay(2000);

  display_message(time); // Display time in format 'Wed, Mar 01 16:03:20 2017

}

void display_message(String message){

   for ( int i = 0 ; i < width * message.length() + matrix.width() - spacer; i++ ) {

    //matrix.fillScreen(LOW);

    int letter = i / width;

    int x = (matrix.width() - 1) - i % width;

    int y = (matrix.height() - 8) / 2; // center the text vertically

    while ( x + width - spacer >= 0 && letter >= 0 ) {

      if ( letter < message.length() ) {

        matrix.drawChar(x, y, message[letter], HIGH, LOW, 1); // HIGH LOW means foreground ON, background off, reverse to invert the image

      }

      letter--;

      x -= width;

    }

    matrix.write(); // Send bitmap to display

    delay(wait/2);

  }

}

String get_time(){

  time_t now;

  time(&now);

  char time_output[buffer_size];

  // See http://www.cplusplus.com/reference/ctime/strftime/ for strftime functions

  // Desired format: ( Sun ,Jul 21 2019 )   ( AM  10:03:20 ) 

  strftime(time_output, buffer_size, "( %a  %d-%m-%y ) ( %p %T )", localtime(&now)); 

  return String(time_output); // returns ( Sat 20-Apr-19) ( AM 12:31:45 )

}

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