ECE Lab Kit 25 Digital Clock with RTC
Build a Precision Digital Clock with DS3231 RTC and 4-Digit Display — ECE Lab Kit 25
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Create a fully functional digital clock that displays hours, minutes, and seconds on a bright 4-digit 7-segment display, with the ability to set time and trigger alarms using three tactile buttons. This kit mirrors common lab assignments for ECE, EEE, and embedded systems students, giving you hands-on experience with the highly accurate DS3231 RTC module and the TM1637 display driver — exactly what you'd encounter in a B.Tech or Smart India Hackathon project.
What You'll Build
You'll assemble and program a standalone digital clock that keeps time even when powered off, thanks to the DS3231's battery-backed RTC. The alarm function can be set and reset via the push buttons, and the display shows the current time in HH:MM:SS format. This is a practical, portable project that demonstrates core embedded programming and hardware integration concepts.
What You'll Learn
- Interface the DS3231 RTC module with Arduino Nano using I2C communication
- Drive a 4-digit 7-segment TM1637 display for time output
- Implement button debouncing and state machines for time setting and alarm control
- Write modular Arduino code to manage real-time clock data and user inputs
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano | 1 |
| DS3231 RTC | 1 |
| 4-Digit 7-Segment TM1637 | 1 |
| Push Button | 3 |
| 10kΩ Resistors | 3 |
| Half Breadboard | 1 |
| MiniUSB Cable | 1 |
| M-M Wires | 20 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This kit is designed for engineering students in B.Tech ECE/EEE programs, particularly those working on lab assignments or projects like Smart India Hackathon. CBSE Class 11-12 students pursuing electronics projects will find it a perfect fit for practical viva demonstrations, and ATL Tinkering Labs can deploy it for intermediate-level microcontroller workshops. It’s also ideal for hobbyists who want to move beyond basic Arduino tutorials.
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.
What if I get stuck during the build?
Scan the QR code to chat with the AI companion that knows every component and line of code for this clock. If needed, you can also reach our team on WhatsApp for a direct human response.
How accurate is the DS3231 RTC?
The DS3231 maintains time within ±2ppm, meaning it typically drifts less than a minute per year, and the onboard battery keeps time even when the Arduino is off.
Can I modify the code to add more features?
Absolutely. The AI companion can suggest modifications like adding a temperature display or multiple alarms, and the open-source Arduino code is fully customisable.
Is this kit suitable for a college minor project?
Yes, it covers I2C communication, display driving, and interrupt handling — enough to demonstrate embedded systems competency in minor projects and lab evaluations.
DS3231 real time clock drives a 4-digit 7-segment display showing HH:MM:SS — alarm and set functions included.
What's in this kit
- Arduino Nano
- DS3231 RTC
- 4-Digit 7-Segment TM1637
- Push Button x3
- 10kΩ Resistors x3
- Half Breadboard
- MiniUSB Cable
- M-M Wires x20
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items