Compare & Calibrate BMP280 Pressure Sensors for Rocketry with Arduino Uno

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

In rocketry and high-altitude payloads, a single untested sensor can produce altitude errors of hundreds of meters. This kit puts two BMP280 pressure sensors in the same chamber, letting you compare their outputs in real time and establish a calibration baseline. You’ll log pressure and temperature data to an SD card with RTC timestamps, then analyze the spread between sensors — exactly the cross-validation aerospace engineers use.

What You'll Build

A dual-sensor pressure logging system that reads two BMP280s simultaneously through a TCA9548A I2C multiplexer, displays live values on a 0.96-inch OLED, and saves timestamped data to a microSD card. You’ll create a portable calibrator that can be sealed in a jar or connected to a vacuum source for altitude simulation, giving you a known pressure reference for your rocket’s altimeter.

What You'll Learn

• Interface multiple I2C sensors using a multiplexer without address conflicts
• Log sensor data to a microSD card with precise RTC timestamps for later analysis
• Quantify sensor precision by statistically comparing two BMP280s in identical conditions
• Calibrate pressure readings against a reference barometer or simulated altitude changes

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Students in CBSE Class 11-12 exploring physics of pressure and altitude through hands-on experiments, B.Tech ECE and EEE undergraduates building sensor interfaces for rocketry competitions, and ATL Tinkering Lab mentors guiding aerospace projects. It’s equally valuable for Smart India Hackathon participants who need reliable sensor calibration without multiple vendor headaches.

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.