Dual-Sensor High Altitude Pressure Calibrator Kit with Arduino Uno and BMP280

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

Recreate the pressure-sensing backbone of a sounding rocket payload or a high‑altitude balloon probe. This kit places two BMP280 sensors inside the same test chamber—just like calibrating a primary and backup altimeter in aerospace engineering. You will wire both sensors through an I2C multiplexer, synchronize their readings with an RTC, display live pressure and temperature on an OLED, and timestamp every value to a microSD card. The result is a cross‑calibrated, self‑documenting pressure logger that teaches real‑world rocketry simulation.

What You'll Build

You will assemble a complete data‑acquisition system that samples two BMP280 sensors simultaneously, corrects for any offset between them, and stores the results. The OLED shows live pressure in hectopascals, temperature, and a calibration status flag. Populate the breadboard, load the pre‑written Arduino sketch, and in a few hours you will have a bench‑top instrument that mimics how atmospheric pressure changes with altitude—directly applicable to model rocket telemetry and ISRO‑style balloon experiments.

What You'll Learn

• Operate two identical I2C sensors on the same bus using a TCA9548A multiplexer
• Cross‑calibrate BMP280 pressure sensors by logging and comparing simultaneous readings
• Integrate a DS3231 real‑time clock to timestamp every data point for later analysis
• Store structured CSV files on a microSD card and retrieve them for plotting in a spreadsheet

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Ideal for CBSE Class 11‑12 students preparing an atmospheric science or rocketry project, B.Tech ECE/EEE undergraduates working on sensor fusion, ATL Tinkering Lab mentors running a high‑altitude balloon unit, and Smart India Hackathon teams prototyping environmental payloads. Even IIT/NIT/VIT/BITS freshmen will find the cross‑calibration and real‑time clock integration a solid bridge between textbook theory and flight‑ready hardware.

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.