Arduino Digital Clock Kit: Build Your Own Real-Time Clock with DS3231 RTC

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

This kit puts an accurate, always-on digital clock in your hands - the kind that never loses time even after a power cut, thanks to the DS3231's battery-backed RTC chip. You'll wire up the 16x2 LCD, connect the RTC, and program three buttons to set the hours and minutes, creating a functional timepiece that you can mount in your room or use as a lab instrument. It's the perfect way to understand how real-world clocks work and get comfortable with Arduino I2C communication.

What You'll Build

You'll build a fully functional digital clock that displays hours, minutes, and seconds on a clear 16x2 LCD screen. The clock keeps precise time using the DS3231 RTC module, which runs on a coin cell battery so your time stays accurate even when unplugged. Three tactile buttons let you adjust the time whenever needed - simple, intuitive, and exactly how real-world clocks work.

What You'll Learn

• How to communicate with a DS3231 real-time clock over I2C
• Displaying custom characters and variables on a 16x2 LCD using an I2C backpack
• Reading button inputs and debouncing them in software
• Structuring an Arduino program to update time and handle user adjustments

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is ideal for students in CBSE Class 11-12 exploring microcontroller projects, ATL Tinkering Lab members building their first Arduino clock, or young makers aged 10-15 who want to see code come to life. It's also a great practice project for B.Tech ECE/EEE first-year students before tackling semester projects.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project - accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.