Hydration Reminder Watch Kit with Arduino Nano + LED
Hydration Reminder Watch Kit – Build a Drink Reminder Wearable with Arduino Nano & OLED
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Assemble a wrist-worn prototype that vibrates every 30 minutes to prompt hydration, displaying the current time on an OLED screen. Ideal for young makers and health-conscious tinkerers, this project merges wearable design with real-time clock programming and simple buzzer control into one engaging build.
What You'll Build
A fully functional hydration reminder watch. The DS3231 real-time clock keeps accurate time while the active buzzer buzzes at half-hour intervals, reminding you to drink water. The 0.96‑inch OLED shows hours and minutes, and a tactile button lets you test the alarm or reset the timer manually.
What You'll Learn
- Interface a DS3231 RTC module with Arduino Nano for precise timekeeping
- Write timer-based logic to trigger an active buzzer every 30 minutes
- Display time on a 0.96‑inch OLED screen using I2C communication
- Assemble a wearable breadboard prototype and power it with a 9V battery
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano | 1 |
| DS3231 RTC | 1 |
| 0.96in OLED | 1 |
| Active Buzzer | 1 |
| Tactile Button | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Capacitors | 5 |
| 400-pt Breadboard | 1 |
| M-M Jumper Wires | 20 |
| 9V Battery Snap | 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
Perfect for school students aged 5–15 discovering wearable technology and health‑focused gadgets. It fits directly into ATL Tinkering Lab activities, science exhibitions, and weekend hobby clubs. With adult guidance, beginners learn coding, real‑time clocks, and buzzer alarms in one cohesive, motivation‑driven build.
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 on the box to access the AI build companion, trained specifically on this hydration reminder watch. You can also reach us on WhatsApp for personal guidance.
Can I wear this on my wrist like a real watch?
The kit builds a breadboard prototype, which you can mount inside a DIY enclosure or attach to a wristband. It’s not waterproof, but it’s a fun wearable to learn and demonstrate the reminder concept.
How do I change the reminder interval from 30 minutes?
The Arduino sketch uses a timer variable. Open the code in the Arduino IDE and change the comparison value to the desired minutes. Compile and upload, and your interval updates instantly.
Is this kit safe for children ages 5–15?
Yes, all components operate at low voltage (9V battery), and the active buzzer produces a gentle vibration. Adult supervision is recommended during assembly and battery connection.
DS3231 RTC triggers buzzer vibration every 30 minutes to remind wearer to drink water. OLED shows time.
What's in this kit
Other projects you can build
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