Digital clock using arduino i2c interface Arduino is a prototype language wich is open source, and it is based on language c , currently they have more than 1 million active users.by the way this tutorial will guide you to build and design a precision digital clock using arduino i2c interface. for this tutorial you need following components: arduino uno board/any other arduino board lcd display (16x2) with i2c interface(i2c module) real time clock(rtc) [ds1307/ds3231] some jumper wires diagram is shown below: you can download the code here: lcd1.ino if you satisfied with this please comment below. since i am a beginner please comment if any error occurs. some of the characters displayed in the lcd are shorten due to some limitation in the lcd panel. [created with blogger 😀-2020] all rights reserved.