Build a Smart Alarm Clock That Tells Time, Temperature, and Humidity – Arduino Nano + DHT22 + 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.

Imagine a bedside clock that doesn’t just beep—it shows you the exact room temperature and humidity the moment you open your eyes. This kit lets you build that clock with your own hands. Perfect for a first smart home project, it combines precise timekeeping (DS3231 RTC), climate sensing (DHT22), and an OLED display, all driven by an Arduino Nano. Every beep and button-press logic is yours to code and understand.

What You'll Build

A self-contained alarm clock that displays real‑time hours and minutes, indoor temperature, and humidity on a compact OLED screen. Three pushbuttons let you set the alarm, snooze it, or adjust the clock. When the alarm fires, the active buzzer rings until you press snooze—no complex wiring, just a clean breadboard project you can proudly place on your desk.

What You'll Learn

• Read time from a DS3231 RTC module over I2C and display it on a 0.96‑inch OLED
• Fetch temperature and humidity data from the DHT22 sensor and show it on the same screen
• Handle button debouncing and write alarm logic with snooze functionality in Arduino
• Interface a buzzer and manage non‑blocking timing for multi‑tasking on the Nano

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Ideal for CBSE Class 11–12 students tackling their first microcontroller project, B.Tech freshers looking for a mini-project they can complete in an afternoon, and ATL Tinkering Lab members exploring sensor integration. Parents who want a screen‑free coding experience for their 10‑ to 15‑year‑olds will love the tangible outcome—a working clock that builds genuine electronics confidence.

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.