Nano OLED Clock on Coin Cell Kit with Arduino Nano + LED
Build a Battery-Powered OLED Clock with Arduino Nano – Lasts Months on a Coin Cell
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 your own compact digital clock that sips power from a single CR2032 coin cell, displaying time on a crisp OLED screen. Perfect for a desk, bedside, or as a portable reference clock that can run for months without battery change. This kit combines the simplicity of Arduino Nano with the precision of a DS3231 RTC module.
What You'll Build
A fully functional, battery-operated OLED clock that shows hours, minutes, and seconds. You'll assemble a circuit where the Arduino Nano reads time from the DS3231 real-time clock and drives a 0.96-inch display, all optimized for ultra-low power consumption so it can run continuously on a coin cell. The final build fits in your palm and can be enclosed in a custom case.
What You'll Learn
- Programming an OLED display with Arduino libraries
- Interfacing a DS3231 precision RTC module via I2C
- Implementing low-power modes on Arduino Nano to extend battery life
- Practical soldering and PCB prototyping techniques
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano | 1 |
| DS3231 RTC | 1 |
| 0.96in OLED | 1 |
| CR2032 Holder | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Capacitors | 5 |
| PCB Prototype Board | 2 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
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
Ideal for young makers aged 8 and above who want their first soldering project that actually works, CBSE Class 11-12 students exploring embedded systems, and ATL Tinkering Lab participants needing a reliable clock module for larger projects. Also great for parents looking for a hands-on STEM activity to do with kids.
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 access the AI companion that knows every connection and code line for this kit. If you need human help, reach us on WhatsApp – we typically reply within an hour.
Can I program the Arduino Nano without soldering?
You can upload code before soldering to test the display and RTC on a breadboard, but final assembly requires soldering for a reliable, compact connection. The kit includes a soldering iron and wire for that purpose.
How long does the coin cell really last?
With our low-power code, the clock draws less than 1mA in sleep mode. A typical CR2032 can run for 4-6 months. You'll learn exactly how to tweak the power-saving features in the code.
Is this kit suitable for a complete beginner with no soldering experience?
Yes. The components are through-hole and easy to solder. The AI companion includes close-up photos and soldering tips. Adult supervision is recommended for young children.
Arduino Nano and DS3231 RTC show time on OLED. CR2032 coin cell powers it for months in low-power mode.
What's in this kit
- Arduino Nano
- DS3231 RTC
- 0.96in OLED
- CR2032 Holder
- 4.7kΩ Resistors x5
- 100nF Caps x5
- PCB Prototype Board x2
- Soldering Iron
- Solder Wire
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
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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