In this tutorial, we will see how to make NodeMCU based World Clock using OLED display. Here, you don’t need Real Time Clock Module and time will be updated through wifi. we have added world’s 4 popular cities, you can add more if you want.
0.96 OLED 4wire Module - 1no
Node MCU ESP8266 12E Dev Module- 1 no
This 0.96” I2C OLED Display is an OLED monochrome 128×64 dot matrix display module with I2C Interface. It is perfect when you need an ultra-small display. Comparing to LCD, OLED screens are way more competitive, which has a number of advantages such as high brightness, self-emission, high contrast ratio, slim outline, wide viewing angle, wide temperature range, and low power consumption. It is compatible with any 3.3V-5V microcontroller, such as Arduino.