Turn Temperature Data Into a Tiny Visual Story - Sparkline Mini Chart OLED Kit with Arduino Uno and DHT22

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

What if your room's temperature could draw its own history - a living graph right on an OLED screen? This kit lets you build a smart display that reads the air with a DHT22 sensor, stores the last 128 readings in a circular buffer, and plots them as a sparkline that's always up to date. Every time you glance at the tiny monitor, you're seeing the recent past of your environment, distilled into one clean line. It's the perfect first project for anyone curious about how real-world data becomes a picture. Build, bootload the code, and within hours you'll have a self-updating temperature tracker that fits in your palm.

What You'll Build

You'll assemble a compact weather station that continuously measures temperature and humidity, then uses a circular buffer to keep exactly 128 recent readings in memory. Those values appear as a mini sparkline on a 0.96-inch OLED display - the line rises, falls, and tells you whether it's getting warmer or cooler, without a single number on the screen. It's a tangible demonstration of data structures and sensor integration that you can hold and show to anyone.

What You'll Learn

• Read temperature and humidity data from a DHT22 sensor using Arduino libraries.
• Implement a circular buffer to store and cycle through the last 128 readings.
• Drive a 0.96-inch OLED display over I2C and render dynamic sparkline charts.
• Combine hardware assembly, wiring, and code uploads to create a working data-logging device.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for absolute beginners aged 5-15, this kit is ideal for CBSE Class 11-12 students dabbling in data logging, B.Tech ECE/EEE freshers wanting a quick sensor-display project, and ATL Tinkering Lab explorers who need an engaging visual project. It also shines at science fairs and Smart India Hackathon mini challenges where showing live data in a compact form makes an impact.

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.