ESP32 Time Series Data Logger Kit: Build a WiFi Climate Monitor with DHT22 & 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.

Turn your curiosity about climate patterns or automated data collection into a real, long-running instrument. This kit packs an ESP32, precision temperature-humidity and pressure sensors, light sensors, a real-time clock, and a microSD logger — everything needed to sample environmental conditions every 5 minutes, store six months of timestamped records, and serve beautiful web graphs straight to your phone over WiFi. Perfect for science fair exhibits, agriculture projects, or learning how IoT systems capture real-world data.

What You'll Build

A standalone ESP32-powered logger that wakes every 5 minutes to read DHT22 (temperature & humidity), BMP280 (pressure & altitude), and two LDRs (ambient light). It tags each reading with an accurate timestamp from the DS3231 RTC, appends it to a CSV on a microSD, and hosts a responsive web dashboard that plots line charts of the last hour, day, week, or month. You’ll have a fully self-contained environmental monitoring station that can run unattended from a simple USB power bank.

What You'll Learn

• I2C communication with BMP280 and DS3231, plus one-wire protocol for DHT22 — all managed in ESP32 Arduino code.
• Implementing precise timestamps, timezone offsets, and automatic daylight saving corrections.
• Writing structured CSV logs to microSD via SPI, handling file creation, appending, and rollover without data loss.
• Building an asynchronous web server on ESP32 that serves real-time charts using Chart.js, with no external cloud dependency.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

CBSE Class 11–12 students turning climate logging into a physics or computer science investigatory project. B.Tech ECE/EEE students building an IoT mini-project for Smart India Hackathon or semester work. ATL Tinkering Lab mentors seeking a ready-to-assemble demo that teaches data pipelines, from sensor to visualization. Hobbyists who want a reliable environmental logger without coordinating parts from multiple suppliers.

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.