Build Your Own Private MQTT Broker Cluster with Raspberry Pi Zero and DHT22 Sensors

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

Stop relying on third-party cloud brokers for your sensor networks. This kit puts you in full control by guiding you through building a private, federated MQTT cluster—three Raspberry Pi Zero W nodes running Mosquitto with bridge links, each paired with a DHT22 sensor. It is real-world infrastructure, scaled down to a single Ethernet-switched tabletop, and exactly the kind of system that powers smart buildings, industrial monitoring, and hackathon prototypes that judges remember. You will configure inter-broker bridges, publish temperature and humidity readings, and watch a self-healing message fabric emerge across three separate boards.

What You'll Build

Three autonomous MQTT brokers, each on its own Raspberry Pi Zero W, linked by bridge connections so a topic published on one node reaches the others seamlessly. A DHT22 sensor on each Pi feeds live environmental data into the cluster. You gain a private, LAN-only publish-subscribe backbone that does not need an internet connection—ideal for workshops, campus labs, or a final-year project that proves you can design distributed communication layers from scratch.

What You'll Learn

• Configure Mosquitto in bridge mode with topic remapping and ACLs across three nodes
• Integrate DHT22 sensors and write Python publishers that feed the local broker
• Debug MQTT message flows using retained messages, QoS levels, and the bridge inspector
• Hardware setup: soldering GPIO headers, flashing SD cards, and wiring sensors on a Pi Zero W

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

B.Tech ECE, EEE, and CSE students tackling IoT communication protocols find this kit a ready-made study platform. It is precise enough for Smart India Hackathon teams who need a fast, offline sensor mesh without cloud dependency, and substantial enough for final-year project demonstrations at IIT, NIT, VIT, or BITS. Researchers building on-device messaging layers and engineering instructors setting up a networking lab experiment will also value the pre-configured bridge templates.

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.