NTP Time and Temperature using a TM1637 4 digit LED display

Test Configuration

• Arduino IDE v2.3.2
• ESP32 Arduino library v2.0.16
• ESP8266 Arduino library v3.1.2
• TM1637 4 digit display
• DS18B20 sensor complete with a PCB 3pin module interface

Libraries

1. ezTime < https://github.com/ropg/ezTime >
2. TM1637_RT < https://github.com/RobTillaart/TM1637_RT >
3. DallasTemperature < https://github.com/milesburton/Arduino-Temperature-Control-Library >
4. OneWire < https://github.com/PaulStoffregen/OneWire >

Sketch Functionality

• Sketch is configured to use the FLASH/BOOT button of your ESP32/8266 to switch between Time and Temperature (℃) display.
  • NOTE: Display clears on change and there can be a short delay before update

• Configure your timezone to have correct local time with auto daylight savings time correction

  const char* myZone PROGMEM   = "Pacific/Auckland";  //Zone list here < https://en.wikipedia.org/wiki/List_of_tz_database_time_zones >
  

• Print #define option to enable Serial Monitor output

  #define PRINT   //Comment out for no Serial output
  

• Sketch will auto detect your ESP32 / ESP8266. If you change any pins make sure you consider the "Strapping Pin's" boot state
• Onboard LED blinks is in sync with second change, 500mS ON > 500mS OFF
• TM1637 Time display also blinks the colon in sync with second change, 500mS ON > 500mS OFF

Wiring