Predict Sun or Rain by Barometric Trend — Arduino Uno & BMP280 Weather Kit

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

Most weather stations tell you current conditions; this kit teaches you to predict them. By logging barometric pressure every 10 minutes with the BMP280 sensor, you'll program an Arduino Uno to display a sun icon when pressure is rising and a rain icon when it's falling on a crisp OLED screen. Perfect for understanding the physics of weather systems while building a genuinely useful desktop gadget.

What You'll Build

A fully functional barometric weather predictor that samples atmospheric pressure at timed intervals, stores the trend using a DS3231 real-time clock, and instantly shows whether fair weather or rain is likely. The OLED screen updates every 10 minutes with a bold graphic — sun or rain — based on the recorded pressure direction, giving you a simple but scientifically sound weather forecast.

What You'll Learn

• Interface a high-precision BMP280 barometric pressure sensor over I2C
• Log timestamped data using the DS3231 RTC module to track pressure changes
• Program conditional logic to determine trend direction (rising/falling) and display custom icons on a 0.96-inch OLED
• Build a breadboard circuit with pull-up resistors, decoupling capacitors, and power management for reliable continuous logging

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for Class 11–12 CBSE students exploring atmospheric pressure in physics, B.Tech ECE/EEE undergraduates building mini weather stations, and ATL Tinkering Lab innovators preparing for science fairs. The kit’s intermediate level assumes basic Arduino familiarity — a perfect step up from blinking LEDs to real sensor-driven data logging.

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.