Build a Multi-Tasking IoT System with DHT22, BMP280, and OLED

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

Go from wiring sensors to running a real-time environmental monitor that demonstrates the heart of modern embedded systems-multitasking with FreeRTOS. This kit lets you build a producer-consumer architecture where one task reads temperature, humidity, and pressure sensors, pushes data safely into a queue, and a second task pulls that data to display on an OLED and publish via MQTT. It's the structured way to master RTOS concepts without getting lost in theory.

What You'll Build

You'll create a fully functional IoT node that samples two DHT22 sensors and a BMP280, passes readings through a FreeRTOS queue, and outputs live data to a 0.96-inch OLED screen. The consumer task simultaneously publishes JSON payloads to an MQTT broker, giving you a ready-to-extend dashboard-ready setup. The result is a clean, documented codebase that illustrates task prioritisation, queue APIs, and inter-task synchronisation.

What You'll Learn

• Create and manage FreeRTOS tasks, passing structured data through queues without race conditions
• Interface multiple I2C and one-wire sensors (BMP280, DHT22) on the same ESP32
• Integrate an MQTT client to publish sensor data to local or cloud brokers
• Debug multi-tasking systems using the serial monitor, OLED feedback, and queue inspection techniques

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

CBSE Class 11-12 students building IoT projects will find this a structured entry into FreeRTOS. B.Tech ECE and EEE undergraduates can use it to nail embedded systems labs or hackathon prototypes like Smart India Hackathon. ATL Tinkering Labs and hobbyists who've outgrown basic Arduino sketches get a guided path to professional-grade multitasking.

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.