Marius M

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Mr. Marsupial

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Description

ESP01 - TM1637 NTP CLOCK

Basic PCB backplate board for a 0.56" display, that uses an ESP01 /ESP01S to get NTP Time and display it.

Sketch code is a little bit messy because is still in progress, but it gets the job done. Just make sure you have all the libraries installed.

Make sure you solder the desired jumper option to provide 3.3V or 5V to the display (i used 3.3V so the display can be as dim as possible).

If you want to print the support, make sure you have 4 x M3 insert nuts.

Code

ESP01 - TM1637 NTP Time - autoupdate

C/C++

#include <Arduino.h>
#include "TM1637.h"
#include <NTPClient.h>
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
#include <Timezone.h>
#include <WiFiManager.h>  // https://github.com/tzapu/WiFiManager

#ifdef U8X8_HAVE_HW_SPI
#include <SPI.h>
#endif
#ifdef U8X8_HAVE_HW_I2C
#include <Wire.h>
#endif
#include <ThingSpeak.h>
//pins definitions for TM1637 and can be changed to other ports
#define CLK 2  // 2 for esp-01 (12 for D1 mini)
#define DIO 0  // 0 for esp-01 (14 for D1 mini)

#define UPDATE 3000  // ms for updating screen

//const char *ssid     = "xxxxxxx"; //your SSID
//const char *password = "xxxxxxx"; //your password

int status = WL_IDLE_STATUS;
WiFiClient client;
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "ro.pool.ntp.org", 0 /*10800 seconds for summer time, 7200 winter time*/, 60000);  //NTPClient(UDP& udp, const char* poolServerName, int timeOffset, int updateInterval);
TM1637 tm1637(CLK, DIO);
bool points = true;
uint32_t time1, time2;
time_t local, utc;
String h, m;
WiFiManager wm;

uint8_t NumTab[] = { 1, 9, 2, 0xff, 1, 6, 8, 0xff, 4, 0xff, 1, 0xff, 0xff, 0xff, 0xff, 0xff };  // 192.168.4.1
uint8_t ListDisp[4];
unsigned char i = 0;
unsigned char count = 0;

void setup() {
  WiFi.mode(WIFI_STA);  // explicitly set mode, esp defaults to STA+AP
  Serial.begin(115200);
  wm.setConfigPortalBlocking(false);
  tm1637.init();
  tm1637.set(0);  //set the brightness DARKEST = 0, BRIGHTEST = 7
  timeClient.begin();
  //WiFi.begin(ssid, password);

  ///////reset settings - wipe credentials FOR TESTING
  //wm.resetSettings();

  wm.autoConnect("NTP_CLOCK_TM1637", "password#123");  // connect to 192.168.4.1 to configure WiFi
}

void loop(void) {
  wm.process();
  if (WiFi.status() != WL_CONNECTED) {
    i = count;
    count++;
    if (count == sizeof(NumTab)) count = 0;
    for (unsigned char BitSelect = 0; BitSelect < 4; BitSelect++) {
      ListDisp[BitSelect] = NumTab[i];
      i++;
      if (i == sizeof(NumTab)) i = 0;
    }
    tm1637.display(0, ListDisp[0]);
    tm1637.display(1, ListDisp[1]);
    tm1637.display(2, ListDisp[2]);
    tm1637.display(3, ListDisp[3]);
    delay(300);
  }

  else {
    timeClient.update();

    unsigned long epochTime = timeClient.getEpochTime();
    // convert received time stamp to time_t object
    utc = epochTime;

    // Then convert the UTC UNIX timestamp to local time
    TimeChangeRule EEST = { "EEST", Last, Sun, Mar, 3, 180 };  //Ora de vara - //Central European Time (Frankfurt, Paris) *Sun, 2*
    TimeChangeRule EET = { "EET", Last, Sun, Oct, 4, 120 };    //Ora de iarna -  Central European Time (Frankfurt, Paris)
    Timezone EE(EEST, EET);
    local = EE.toLocal(utc);

    displayTime();

    delay(UPDATE);
  }
}

void displayTime() {

  //////// reduce brightness at night time (between 19:00 and 07:00)
  tm1637.point(POINT_ON);  //turn points on

  if (hour(local) >= 19 || hour(local) <= 7) {
    tm1637.set(1);
  } else {
    tm1637.set(7);
  }

  ////////// "compose" time as String and display it
  h = "";
  // format the time to 12-hour format with AM/PM and no seconds
  if (hour(local) < 10)  // add a space if hour is under 10
    h += "0";
  h += hour(local);
  int digitoneH = h.toInt() / 10;
  int digittwoH = h.toInt() % 10;
  tm1637.display(0, digitoneH);
  tm1637.display(1, digittwoH);
  //t += ":"; // colon is handled in display
  m = "";
  if (minute(local) < 10)  // add a zero if minute is under 10
    m += "0";
  m += minute(local);
  int digitoneM = m.toInt() / 10;
  int digittwoM = m.toInt() % 10;
  tm1637.display(2, digitoneM);
  tm1637.display(3, digittwoM);

  Serial.print("Time is: ");
  Serial.print(digitoneH);
  Serial.print(digittwoH);
  Serial.print(":");
  Serial.print(digitoneM);
  Serial.println(digittwoM);
}

CAD-Custom parts and enclosures

TM1637_feet.rar

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Dec 26,2023

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ESP01 - TM1637 NTP CLOCK

Basic ESP01 NTP clock with a 0.56'' TM1537 7 segments display.

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Published: Dec 26,2023

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