# bitclock

bitclock.ino

#include <TimeLib.h> 

#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
#include <NTPClient.h>
#include <BlynkSimpleEsp8266.h>

#include <Adafruit_NeoMatrix.h>
#include <Adafruit_NeoPixel.h>
// #include <avr/power.h> // Comment out this line for non-AVR boards (Arduino Due, etc.)

#define PIN D6
#define REFRESH 100

WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "europe.pool.ntp.org", 7200);

char ssid[] = "NETWORK NAME";
char pass[] = "NETWORK PASSWORD";   

char auth[] = "BLYNK KEY";

int current_hour = 0;
int current_minute = 0;

uint32_t hour_color;
uint32_t minute_color;

int brightness = 32;

int default_color_hour[3] =  { 100, 100, 0 };
int default_color_minutes[3] =  { 100, 0, 100 };
int default_color_seconds[3] =  { 0, 100, 100 };

Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(8, 8, PIN,
  NEO_MATRIX_TOP     + NEO_MATRIX_RIGHT +
  NEO_MATRIX_COLUMNS + NEO_MATRIX_PROGRESSIVE,
  NEO_GRB            + NEO_KHZ800);

void setup() {
  Serial.begin(115200);

  Blynk.begin(auth, ssid, pass);
  // WiFi.begin(ssid, pass);

  while ( WiFi.status() != WL_CONNECTED ) {
    delay ( 500 );
    Serial.print ( "." );
  }

  timeClient.begin();

  matrix.begin();
  matrix.setBrightness(brightness);
  matrix.show(); // Initialize all pixels to 'off'

  hour_color = matrix.Color(255, 0, 0);
  minute_color = matrix.Color(255, 0, 0);

  Blynk.virtualWrite(V0, default_color_hour[0], default_color_hour[1], default_color_hour[2]);
  Blynk.virtualWrite(V1, default_color_minutes[0], default_color_minutes[1], default_color_minutes[2]);
  Blynk.virtualWrite(V2, default_color_seconds[0], default_color_seconds[1], default_color_seconds[2]);

//  Blynk.virtualWrite(0, default_color_hour);
//  Blynk.virtualWrite(1, default_color_minutes);
//  Blynk.virtualWrite(2, default_color_seconds);
}

BLYNK_WRITE(V3)
{
  brightness = param.asInt();
}

void loop() {
  timeClient.update();
  Blynk.run();

  matrix.setBrightness(brightness);
  matrix.fillScreen(matrix.Color(0, 0, 0));

  display_time();
  matrix.show();
  delay(200);
}

void display_time(){
  drawInt(day(timeClient.getEpochTime()), 1, matrix.Color(100, 100, 100));
  drawInt(month(timeClient.getEpochTime()), 2, matrix.Color(100, 100, 100));

  drawInt(timeClient.getHours(), 4, matrix.Color(100, 100, 0));
  drawInt(timeClient.getMinutes(), 5, matrix.Color(100, 0, 100));
  drawInt(timeClient.getSeconds(), 6, matrix.Color(0, 100, 100));
}

void drawInt(int val, int y, uint32_t color){
  String str = String(val, BIN);

  for(int x = str.length(); x--; x==0){
    if (str[x] == '1') matrix.drawPixel(x+1+6-str.length(), y, color);
    // else matrix.drawPixel(x+1+6-str.length(), y, matrix.Color(50, 50, 50));
  }
}