NTP-UTC-UHR mit ESP8266-01S + 0,96" OLED-Display

Has not everyone noticed that their clocks (if you are not radio-cuckoos) go before or after time? At the latest by the next time change in summer or autumn, all clocks are set to a correct time again.

The computer regularly synchronizes its internal clock with a so-called NTP server. The NTP server is a radio clock for the computer.

We can use such an NTP server and use an ESP8266-01S module via WLAN. This time will be displayed on an OLED display immediately.

What we need:

1 x ESP8266-01S
1 x 0,96"OLED-Display
a few Jumper lines
1 x Battery holder for 2 batteries

1 x Programming adapter USB or FTDI FT232RL

3D printed housing of thingivers

 

The hardware wiring:

In order to operate the clock independently of the computer we use two batteries with each 1.5V. With 3V total voltage we are at the bottom of the hardware.

The mass (minus pole) of the battery is connected to the GND connections on the ESP8266-01S and OLED display. > Black line
The 3V (Plus-Pol) of the battery is connected with VCC to the ESP8266-01S and display, in addition the CH-u PD (Chip-Enable) has to be placed on high (3V). > Red line
Last but not least, the two iqc lines are connected from the display to the ESP8266-01S, to which we must use the two available GPIOs. The Yellow wire corresponds to SCK and is connected to GPIO2. The Green line is SDA and is connected to GPIO0.

If everything is connected, we can switch to programming. For programming, the GPIO0 must be set to mass during the start!

The software:

 

'35; includes "ESP8266WiFi.h"           
'35; includes <WiFi.h>
'35; includes <Wire.h>
'35; includes font.h.

WiFiClient client;

char* page     = "WiFi-SSID";
char* password = "WiFi";
char buffer[20];

\35; define OLED address  0x3c

unsuitable int localPort = 2390; 
IPAddress timeServerIP;
const char* ntpServer = "pool.ntp.org";

const int NTP PACKET SIZE = 48;
exchange packetBuffer[ NTP PACKET SIZE];
WiFiUDP uc;

static void reset display(void)
{   displayOff();   clear display();   displayOn();
}

void StartUp OLED()
{   init OLED();   reset display();   displayOff();   setX(0,0);   clear display();   displayOn();
}

void displayOn(void)
{     sendcommand(0xaf);
}

void displayOff(void)
{   sendcommand(0xae);
}

static void clear display(void)
{   unsuitable char i,c;   for(c=0;c<8;c++)   {      setX(c,0);         {       for(i=0;i<128;i++)       {         SendChar(0);       }     }   }
}
 
static void SendChar(unsuitable char date) 
{   Wire.start(OLED address);   Wire.write(0x40);   Wire.write(date);
  Wire.endTransmission();
} static void sendCharXY(unsuitable char date, int X, int Y) {  setX(X, Y);  Wire.start(OLED address);  Wire.write(0x40);  for(int i=0;i<8;i++)    Wire.write(pgm read apartment(myFont[date-0x20]+i));      Wire.endTransmission(); } static void sendcommand(unsuitable char with) {  Wire.start(OLED address);  Wire.write(0x80);  Wire.write(with);  Wire.endTransmission();
}
static void setX(unsuitable char row,unsuitable char c) {  sendcommand(0xb0+row);  sendcommand(0x00+(8*c&0x0f));  sendcommand(0x10+((8*c>>4)&0x0f)); } static void sendStr(unsuitable char *string) {  unsuitable char i=0;  while(*string)  {    for(i=0;i<8;i++)    {      SendChar(pgm read apartment(myFont[*string-0x20]+i));    }    *string++;  } } static void sendStrXY( char *string, int X, int Y) {  setX(X,Y);  unsuitable char i=0;  while(*string)  {    for(i=0;i<8;i++)    {      SendChar(pgm read apartment(myFont[*string-0x20]+i));    }    *string++;  } } static void init OLED(void) {   sendcommand(0xae);   sendcommand(0xa6);    sendcommand(0xAE);    sendcommand(0xD5);    sendcommand(0x80);    sendcommand(0xA8);    sendcommand(0x3F);    sendcommand(0xD3);    sendcommand(0x0);    sendcommand(0x40 | 0x0);    sendcommand(0x8D);    sendcommand(0x14);    sendcommand(0x20);    sendcommand(0x00);    //sendcommand(0xA0 `124; 0x1); //180 Turn Grade    sendcommand(0xA0);    //sendcommand(0xC8); //180 Turn Grade    sendcommand(0xC0);    sendcommand(0xEN);    sendcommand(0x12);    sendcommand(0x81);    sendcommand(0xCF);    sendcommand(0xd9);    sendcommand(0xF1);    sendcommand(0xDB);    sendcommand(0x40);    sendcommand(0xA4);    sendcommand(0xA6);   clear display();   sendcommand(0x2e);   sendcommand(0x20);   sendcommand(0x00); } void Draw WIFI() {   clear display();   setX(0,0);   for(int i=0;i<128*8;i++)   {    SendChar(pgm read apartment(WIFI1+i));   }   sendcommand(0xaf); } void Mr Draw WAVES() {   clear display();   setX(0,0);      for(int i=0;i<128*8;i++)   {    SendChar(pgm read apartment(rfwaves+i));   }   sendcommand(0xaf); }
void setup() {  delay(200);  Wire.pins(0, 2);  Wire.start();  StartUp OLED();  clear display();    sendStrXY("***************", 0, 1);  sendStrXY("START", 0, 1);    WiFi.start(page, password);   while (WiFi.status() != WL CONNECTED) {    sendStrXY("Connect", 0, 1);    delay(250);    sendStrXY("               ", 0, 1);   }  IPAddress lp = WiFi.localIP();     String ipStr = String(lp[0]) + '.' + String(lp[1]) + '.' + String(lp[2]) + '.' + String(lp[3]);  ipStr.toCharArray(buffer, 20);  sendStrXY((buffer), 0, 1);  uc.start(localPort);  delay(2000); } void run() { WiFi.hostByName(ntpServer, timeServerIP);  SendNTPpacket(timeServerIP);  delay(200); int cb = uc.parsePacket();  if (!cb) {  }  ed {  uc.read(packetBuffer, NTP PACKET SIZE);    unsuitable long highWord = word(packetBuffer[40], packetBuffer[41]);    unsuitable long lowWord = word(packetBuffer[42], packetBuffer[43]);    unsuitable long secsSince1900 = highWord << 16 | lowWord;    const unsuitable long SeventyYears = 2208988800UL;    unsuitable long epoch = secsSince1900 - SeventyYears;    int time = (epoch  % 86400L) / 3600;    Serial.Print(time);    int minutes =(epoch  % 3600) / 60;    int second = epoch % 60;        String r;        r = String(int(time/10));    char hours[2];    r.toCharArray(hours,2);        r = String(int(time%10));    char hours[2];    r.toCharArray(hours,2);    r = String(int(minutes/10));    char min[2];    r.toCharArray(min,2);        r = String(int(minutes%10));    char min[2];    r.toCharArray(min,2);           r = String(int(second/10));    char sec1[2];    r.toCharArray(sec1,2);    r = String(int(second%10));    char sec2[2];    r.toCharArray(sec2,2);        //sendStrXY("00:00:00", 2, 1);         sendStrXY(hours, 2, 4);      sendStrXY(hours, 2, 5);      sendStrXY(":", 2, 6);            sendStrXY(min, 2, 7);      sendStrXY(min, 2, 8);      sendStrXY(":", 2, 9);      sendStrXY(sec1, 2, 10);      sendStrXY(sec2, 2, 11);         delay(50);      } } unsuitable long SendNTPpacket(IPAddress& address) {  memset(packetBuffer, 0, NTP PACKET SIZE);  packetBuffer[0] = 0b11100011;     packetBuffer[1] = 0;       packetBuffer[2] = 6;       packetBuffer[3] = 0xEC;  packetBuffer[12]  = 49;  packetBuffer[13]  = 0x4E;  packetBuffer[14]  = 49;  packetBuffer[15]  = 52;  uc.start(address, 123);  uc.write(packetBuffer, NTP PACKET SIZE);  uc.endPacked(); }

font.h (File as new tab)
const char myFont[][8] PROGRAMME = {   {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
{0x00,0x00,0x5F,0x00,0x00,0x00,0x00,0x00},
{0x00,0x00,0x07,0x00,0x07,0x00,0x00,0x00},
{0x00,0x14,0x7F,0x14,0x7F,0x14,0x00,0x00},
{0x00,0x24,0x2A,0x7F,0x2A,0x12,0x00,0x00},
{0x00,0x23,0x13,0x08,0x64,0x62,0x00,0x00},
{0x00,0x36,0x49,0x55,0x22,0x50,0x00,0x00},
{0x00,0x00,0x05,0x03,0x00,0x00,0x00,0x00},
{0x00,0x1C,0x22,0x41,0x00,0x00,0x00,0x00},
{0x00,0x41,0x22,0x1C,0x00,0x00,0x00,0x00},
{0x00,0x08,0x2A,0x1C,0x2A,0x08,0x00,0x00},
{0x00,0x08,0x08,0x3E,0x08,0x08,0x00,0x00},
{0x00,0xA0,0x60,0x00,0x00,0x00,0x00,0x00},
{0x00,0x08,0x08,0x08,0x08,0x08,0x00,0x00},
{0x00,0x60,0x60,0x00,0x00,0x00,0x00,0x00},
{0x00,0x20,0x10,0x08,0x04,0x02,0x00,0x00},
{0x00,0x3E,0x51,0x49,0x45,0x3E,0x00,0x00},
{0x00,0x00,0x42,0x7F,0x40,0x00,0x00,0x00},
{0x00,0x62,0x51,0x49,0x49,0x46,0x00,0x00},
{0x00,0x22,0x41,0x49,0x49,0x36,0x00,0x00},
{0x00,0x18,0x14,0x12,0x7F,0x10,0x00,0x00},
{0x00,0x27,0x45,0x45,0x45,0x39,0x00,0x00},
{0x00,0x3C,0x4A,0x49,0x49,0x30,0x00,0x00},
{0x00,0x01,0x71,0x09,0x05,0x03,0x00,0x00},
{0x00,0x36,0x49,0x49,0x49,0x36,0x00,0x00},
{0x00,0x06,0x49,0x49,0x29,0x1E,0x00,0x00},
{0x00,0x00,0x36,0x36,0x00,0x00,0x00,0x00},
{0x00,0x00,0xAC,0x6C,0x00,0x00,0x00,0x00},
{0x00,0x08,0x14,0x22,0x41,0x00,0x00,0x00},
{0x00,0x14,0x14,0x14,0x14,0x14,0x00,0x00},
{0x00,0x41,0x22,0x14,0x08,0x00,0x00,0x00},
{0x00,0x02,0x01,0x51,0x09,0x06,0x00,0x00},
{0x00,0x32,0x49,0x79,0x41,0x3E,0x00,0x00},
{0x00,0x7E,0x09,0x09,0x09,0x7E,0x00,0x00},
{0x00,0x7F,0x49,0x49,0x49,0x36,0x00,0x00},
{0x00,0x3E,0x41,0x41,0x41,0x22,0x00,0x00},
{0x00,0x7F,0x41,0x41,0x22,0x1C,0x00,0x00},
{0x00,0x7F,0x49,0x49,0x49,0x41,0x00,0x00},
{0x00,0x7F,0x09,0x09,0x09,0x01,0x00,0x00},
{0x00,0x3E,0x41,0x41,0x51,0x72,0x00,0x00},
{0x00,0x7F,0x08,0x08,0x08,0x7F,0x00,0x00},
{0x00,0x41,0x7F,0x41,0x00,0x00,0x00,0x00},
{0x00,0x20,0x40,0x41,0x3F,0x01,0x00,0x00},
{0x00,0x7F,0x08,0x14,0x22,0x41,0x00,0x00},
{0x00,0x7F,0x40,0x40,0x40,0x40,0x00,0x00},
{0x00,0x7F,0x02,0x0C,0x02,0x7F,0x00,0x00},
{0x00,0x7F,0x04,0x08,0x10,0x7F,0x00,0x00},
{0x00,0x3E,0x41,0x41,0x41,0x3E,0x00,0x00},
{0x00,0x7F,0x09,0x09,0x09,0x06,0x00,0x00},
{0x00,0x3E,0x41,0x51,0x21,0x5E,0x00,0x00},
{0x00,0x7F,0x09,0x19,0x29,0x46,0x00,0x00},
{0x00,0x26,0x49,0x49,0x49,0x32,0x00,0x00},
{0x00,0x01,0x01,0x7F,0x01,0x01,0x00,0x00},
{0x00,0x3F,0x40,0x40,0x40,0x3F,0x00,0x00},
{0x00,0x1F,0x20,0x40,0x20,0x1F,0x00,0x00},
{0x00,0x3F,0x40,0x38,0x40,0x3F,0x00,0x00},
{0x00,0x63,0x14,0x08,0x14,0x63,0x00,0x00},
{0x00,0x03,0x04,0x78,0x04,0x03,0x00,0x00},
{0x00,0x61,0x51,0x49,0x45,0x43,0x00,0x00},
{0x00,0x7F,0x41,0x41,0x00,0x00,0x00,0x00},
{0x00,0x02,0x04,0x08,0x10,0x20,0x00,0x00},
{0x00,0x41,0x41,0x7F,0x00,0x00,0x00,0x00},
{0x00,0x04,0x02,0x01,0x02,0x04,0x00,0x00},
{0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00},
{0x00,0x01,0x02,0x04,0x00,0x00,0x00,0x00},
{0x00,0x20,0x54,0x54,0x54,0x78,0x00,0x00},
{0x00,0x7F,0x48,0x44,0x44,0x38,0x00,0x00},
{0x00,0x38,0x44,0x44,0x28,0x00,0x00,0x00},
{0x00,0x38,0x44,0x44,0x48,0x7F,0x00,0x00},
{0x00,0x38,0x54,0x54,0x54,0x18,0x00,0x00},
{0x00,0x08,0x7E,0x09,0x02,0x00,0x00,0x00},
{0x00,0x18,0xA4,0xA4,0xA4,0x7C,0x00,0x00},
{0x00,0x7F,0x08,0x04,0x04,0x78,0x00,0x00},
{0x00,0x00,0x7D,0x00,0x00,0x00,0x00,0x00},
{0x00,0x80,0x84,0x7D,0x00,0x00,0x00,0x00},
{0x00,0x7F,0x10,0x28,0x44,0x00,0x00,0x00},
{0x00,0x41,0x7F,0x40,0x00,0x00,0x00,0x00},
{0x00,0x7C,0x04,0x18,0x04,0x78,0x00,0x00},
{0x00,0x7C,0x08,0x04,0x7C,0x00,0x00,0x00},
{0x00,0x38,0x44,0x44,0x38,0x00,0x00,0x00},
{0x00,0xFC,0x24,0x24,0x18,0x00,0x00,0x00},
{0x00,0x18,0x24,0x24,0xFC,0x00,0x00,0x00},
{0x00,0x00,0x7C,0x08,0x04,0x00,0x00,0x00},
{0x00,0x48,0x54,0x54,0x24,0x00,0x00,0x00},
{0x00,0x04,0x7F,0x44,0x00,0x00,0x00,0x00},
{0x00,0x3C,0x40,0x40,0x7C,0x00,0x00,0x00},
{0x00,0x1C,0x20,0x40,0x20,0x1C,0x00,0x00},
{0x00,0x3C,0x40,0x30,0x40,0x3C,0x00,0x00},
{0x00,0x44,0x28,0x10,0x28,0x44,0x00,0x00},
{0x00,0x1C,0xA0,0xA0,0x7C,0x00,0x00,0x00},
{0x00,0x44,0x64,0x54,0x4C,0x44,0x00,0x00},
{0x00,0x08,0x36,0x41,0x00,0x00,0x00,0x00},
{0x00,0x00,0x7F,0x00,0x00,0x00,0x00,0x00},
{0x00,0x41,0x36,0x08,0x00,0x00,0x00,0x00},
{0x00,0x02,0x01,0x01,0x02,0x01,0x00,0x00},
{0x00,0x02,0x05,0x05,0x02,0x00,0x00,0x00} 
};

// bitmap logo
const char WIFI1[] PROGRAMME = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80, 0xC0, 0xE0, 0xE0, 0xE0, 0xF0, 0xF0, 0xF8,
0xF8, 0xF8, 0xF8, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xF8, 0xF8, 0xF8,
0xF8, 0xF8, 0xF0, 0xF0, 0xE0, 0xE0, 0xE0, 0xC0, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0xC0, 0xC0,
0xC0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xF0,
0xF0, 0xF8, 0xFC, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFC, 0xF8,
0xF0, 0xF0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0,
0xC0, 0xC0, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0xC0, 0xF0, 0xF8, 0xF8, 0xFC, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x7F,
0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F,
0x7F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0xFF, 0xFF,
0xFF, 0xFF, 0x3F, 0x3F, 0x1F, 0x1F, 0x3F, 0x3F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3F, 0x1F, 0x0F, 0x0F, 0x07, 0x03, 0x03, 0xC3, 0xC1, 0xC1, 0xC0,
0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0,
0xC0, 0xC0, 0xC0, 0xC0, 0x00, 0x00, 0x00, 0xC0, 0xC0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE1, 0xC1, 0x03,
0x03, 0x03, 0x07, 0x07, 0x0F, 0x1F, 0x3E, 0x7E, 0xF8, 0xF8, 0xF0, 0xC0, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0,
0x80, 0x00, 0x00, 0x00, 0x00, 0x01, 0x3F, 0xFF, 0x3F, 0x0F, 0x00, 0x00, 0x00, 0xC0, 0x00, 0x00,
0x00, 0x00, 0x03, 0x3F, 0xFF, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0xF8, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0x0E, 0x0E, 0x0C, 0x0C, 0x0E, 0x0E, 0x0E, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87,
0x87, 0x87, 0x87, 0x07, 0x00, 0x00, 0x00, 0x09, 0xFB, 0xFB, 0xFB, 0xFB, 0xFB, 0xFB, 0xFB, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xF0, 0x80, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x80, 0xF8, 0xFF, 0xFF, 0xF0,
0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x80, 0xF0, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
0x0F, 0x0F, 0x0B, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x07, 0x0F, 0x3F, 0x7F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3F, 0x3F,
0x0F, 0x07, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x03, 0x03, 0x03,
0x03, 0x03, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x80,
0x80, 0x80, 0xC0, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC, 0x7F, 0x3F, 0x1F, 0x0F, 0x03, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x03, 0x03, 0x07, 0x07,
0x07, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
0x0F, 0x1F, 0x3F, 0x7F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0x7E, 0x7E, 0x3E, 0x1E,
0x0E, 0x0E, 0x0E, 0x0E, 0x0E, 0x0E, 0x0E, 0x0E, 0x0E, 0x0E, 0x0E, 0x0E, 0x0F, 0x0F, 0x0F, 0x07,
0x07, 0x07, 0x03, 0x03, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x03, 0x03, 0x07, 0x07, 0x0F, 0x0F, 0x0F,
0x0F, 0x1F, 0x1F, 0x1F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x7F, 0x7F, 0x7F,
0x7F, 0x7F, 0x7F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x1F, 0x1F, 0x1F, 0x0F, 0x0F, 0x0F, 0x1F, 0x0F,
0x0F, 0x0F, 0x0F, 0x0F, 0x07, 0x07, 0x03, 0x03, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};


// bitmap
const char rfwaves[] PROGRAMME = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0xC0, 0xC0, 0xC0, 0xC0,
0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0,
0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0,
0xC0, 0xC0, 0xC0, 0xC0, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0xC0, 0xC0, 0xC0, 0xE0,
0xE0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF8, 0xF8, 0xF8, 0xFC, 0xFC, 0xFC, 0xFC, 0xFE, 0xFE, 0x7E, 0x7E,
0x7F, 0x7F, 0x3F, 0x3F, 0x3F, 0x3F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x0F, 0x0F, 0x0F, 0x0F,
0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
0x0F, 0x0F, 0x0F, 0x0F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x3F, 0x3F, 0x3F, 0x3F, 0x7F, 0x7F,
0x7E, 0x7E, 0xFE, 0xFE, 0xFE, 0xFC, 0xFC, 0xFC, 0xF8, 0xF8, 0xF8, 0xF8, 0xF0, 0xF0, 0xF0, 0xE0,
0xE0, 0xC0, 0xC0, 0xC0, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x03, 0x07, 0x07, 0x0F, 0x0F, 0x1F, 0x1F, 0x1F,
0x0F, 0x0F, 0x07, 0x07, 0x07, 0x03, 0x03, 0x03, 0x01, 0x01, 0x01, 0x80, 0x80, 0x80, 0xC0, 0xC0,
0xC0, 0xE0, 0xE0, 0xE0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xFC, 0xFC, 0xFC,
0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E,
0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0x7E, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC,
0xFC, 0xFC, 0xFC, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF0, 0xF0, 0xF0, 0xF0, 0xE0, 0xE0, 0xE0, 0xC0,
0xC0, 0xC0, 0x80, 0x80, 0x80, 0x00, 0x01, 0x01, 0x01, 0x03, 0x03, 0x07, 0x07, 0x07, 0x0F, 0x0F,
0x1F, 0x1F, 0x1F, 0x1F, 0x0F, 0x0F, 0x07, 0x07, 0x03, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x02, 0x07, 0x07, 0x0F, 0x0F, 0x1F, 0x1F, 0x1F,
0x1F, 0x0F, 0x0F, 0x0F, 0x07, 0x07, 0x07, 0x03, 0x03, 0x03, 0x01, 0x01, 0x01, 0x81, 0x81, 0x80,
0x80, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0,
0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xC0, 0xC0, 0xC0, 0xC0, 0x80,
0x80, 0x80, 0x81, 0x01, 0x01, 0x01, 0x03, 0x03, 0x03, 0x07, 0x07, 0x07, 0x0F, 0x0F, 0x0F, 0x1F,
0x1F, 0x3F, 0x1F, 0x1F, 0x0F, 0x0F, 0x07, 0x06, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x06, 0x07, 0x0F, 0x0F, 0x1F, 0x1F, 0x3F,
0x3F, 0x1F, 0x1F, 0x0F, 0x0F, 0x0F, 0x0F, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x0F, 0x0F, 0x0F, 0x0F, 0x1F, 0x1F, 0x1F,
0x3F, 0x3F, 0x1F, 0x1F, 0x0F, 0x0F, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x06, 0x0E, 0x0E, 0x0E, 0x1E, 0x1E, 0x3F,
0x3F, 0x3E, 0x1E, 0x1E, 0x0E, 0x0E, 0x06, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};

After programming we integrate everything into the printed housing and have a nice built-in, always up-to-date clock.

 



The clock only works now when an NTP server reaches us!

As a task you can consider a change to the software so that the time is only updated to the full minute or hour and meanwhile we calculate autonomously in ESP8266-01S.

There are also other lines available on the display, which could be supplemented with a date.

At the top of the enclosure there are still holes for switches, how about an ON/OFF switch?

 

Have fun rebuilding and leave your ideas for improvement in the comments.

DisplaysEsp-8266Projekte für fortgeschrittene

3 comments

yetti

yetti

Das sollte doch auch einfacher gehen mittels time.h und configtime,
dann kann man noch den localen Router noch als Zeitserver verwenden, denn kann ohne Probleme öfter abfragen. Ist dann zwar nicht PTB aber schon sehr genau für eine normale Uhr und das sollte für die meisten weiteren Projekte reichen.

#include

void setup() {
//Wifi
….
}

void loop () {
….
// alle x Minuten
….
Serial.println(“aktuelle Zeit holen”);
getPTB();

// Zeit holen aus dem internen Speicher.
Serial.println(“Readtime()”);
readtime(); // Zeit einlesen
….
}

void getPTB(){
configTime(0, 0, “192.168.1.1”, “ptbtime1.ptb.de”, “ptbtime2.ptb.de”); // locale Fritzbox und ptb.de
setenv(“TZ”, “CET-1CEST,M3.5.0,M10.5.0/3”, 1); // locale Zeit einstellen mit Sommerzeit
Serial.print("Waiting for time “);
while (!time(nullptr)) {
Serial.print(”.");
delay(100);
}
delay(100); // warten auf NTP Zeit
}

void readtime() {
time_t now = time(nullptr);
struct tm*timeinfo;
time(&now);
timeinfo = localtime(&now);
year = 1900 + timeinfo→tm_year;
month = 1 + timeinfo→tm_mon;
day = timeinfo→tm_mday;
hour = timeinfo→tm_hour;
minute = timeinfo→tm_min;
second = timeinfo→tm_sec;
// Serial.printf(“%02u-%02u-%4u\n”, day, month, year);
Serial.printf(“%02u:%02u:%02u \n”, hour, minute, second);

if (year < 2000) { // das war nix Zeit falsch ESP.restart(); }

}

Kai

Kai

Hallo Markus,
ein ESP arbeitet leider viel zu ungenau bzw. arbeitet er Funktionalitäten wie WLAN vorrangig ab und vernachlässigt dann andere Prozesse. Würde die Zeit nicht stündlich abgefragt käme es mitunter pro Stunde zu einem Fehler von bis zu 3 Minuten. Eine Lösung ist ein RTC-Modul oder das WLAN zu deaktivieren oder mit der Funktion Millis die verstrichene Zeit der Hintergrundprozesse zu ermitteln. Es geht hier ums basteln und nicht um High-End-Geräte…

Markus Gebhard

Markus Gebhard

Nettes Beispiel, aber bitte fair sein und die Regularien und Doku des Zeitservers beachten. Siehe https://www.pool.ntp.org/vendors.html und insbesondere die Richtlinie "Don’t send excessively frequent queries. Reasonable query intervals are typically from once or twice a day to a 4-5 times an hour depending on the application. Really consider how often the device will need “fresh time”. A standard ntpd or openntpd server works, too." – bitte vermeiden, andauernd eine Zeitabfrage zu senden, weil diese eben doch Bandbreite verbraucht und damit andere in Mitleidenschaft zieht.

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