Build a Peer-to-Peer Sensor Network Using ESP32 ESP-NOW – 3 Nodes, No Router, Complete Kit

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

Imagine monitoring temperature and humidity across a building, agricultural field, or a school lab without relying on any existing WiFi infrastructure. With this kit, you’ll build three battery-operated sensor nodes that talk directly to each other using ESP-NOW – a low-power, low-latency protocol that doesn’t need a router. One of them even sports an OLED display to show live readings from all nodes, creating a fully decentralized sensor network that you can scale up or take anywhere.

What You'll Build

You’ll create a wireless sensor network where each ESP32 board reads temperature and humidity from its DHT22, broadcasts the data via ESP-NOW, and receives updates from the other two nodes. The node with the OLED screen displays a real-time dashboard showing all three stations’ readings. The network works completely ad-hoc – no router, no cloud – just direct peer-to-peer communication, making it perfect for field deployments, smart agriculture prototypes, or classroom demonstrations.

What You'll Learn

• ESP-NOW protocol: broadcasting, peer addressing, and data packet structure
• Interfacing DHT22 temperature/humidity sensors with ESP32 and handling digital data
• Multi-node network design without central coordinator, using callbacks and asynchronous data handling
• Displaying live sensor data on an OLED screen using I2C and visual dashboard layout

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is ideal for CBSE Class 11-12 students building IoT sensor networks for science exhibitions or school ATL labs. B.Tech ECE and EEE students can use it as a ready-to-deploy wireless communication project for Smart India Hackathon or semester labs. Makers at VIT, BITS, NITs, and IITs will appreciate the clean ESP-NOW protocol implementation for prototyping distributed sensing without internet dependency.

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.