Network Topology Live Graph Kit with ESP32 + DHT22
ESP32 Network Topology Live Graph Kit — Visualize a 10-Node Wireless Sensor Network in Real Time
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
You’ll deploy ten ESP32 nodes across a room, each reading temperature and humidity, and have them report over ESP-NOW to a central hub. The hub streams connectivity metrics to a browser, where a live force-directed graph updates node positions based on signal strength and link quality. This is not just a sensor array — it’s a functional network visualization tool that teaches you how real mesh protocols behave under dynamic conditions.
What You'll Build
A self-organizing wireless sensor network with 10 ESP32 nodes, each equipped with a DHT22. The central ESP32 hub aggregates topology data — RSSI values, packet success rates, neighbour lists — and serves a real-time force-directed graph on a local web interface. You’ll see nodes attract, repel, and cluster as the network adapts to interference or node failures, giving you immediate insight into link stability and mesh routing.
What You'll Learn
- Implementing ESP-NOW peer-to-peer protocol for low-latency mesh communication
- Designing a data pipeline from IoT sensors to a web-based visualization
- Applying force-directed graph algorithms (D3.js) to reflect live network state
- Debugging RF interference and optimizing antenna placement for reliable links
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 11 |
| DHT22 Sensor | 10 |
| 4.7kΩ Resistor | 15 |
| 100nF Capacitor | 20 |
| PCB Prototype Board | 2 |
| 5V 2A Power Supply | 11 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This kit is designed for B.Tech ECE, CSE, and IoT specialization students, particularly those preparing for hackathons like Smart India Hackathon or building capstone projects. It’s equally relevant for research scholars at IITs, NITs, and VIT exploring wireless mesh topologies and live data visualization.
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.
What if I get stuck during the build?
Scan the QR code inside the box to talk to the AI companion that knows every line of code and wiring detail for this kit. You can also reach us on WhatsApp for direct troubleshooting.
Can I add more than 10 nodes?
Yes, the ESP-NOW protocol supports up to 20 peers, and the web interface can easily handle additional nodes. The companion guide includes notes on scaling the visualization.
What software libraries are required?
The build uses the Arduino ESP32 core, DHT sensor library, and D3.js for the graph. All library installation steps are covered in the companion walkthrough.
Does the graph update in real time without page refresh?
Yes, the hub streams live JSON data over WebSockets, so the force-directed graph repositions nodes dynamically as signal strengths change — no manual refresh needed.
ESP32 hub collects connectivity data from 10 ESP-NOW nodes and renders live force-directed graph in browser.
What's in this kit
- ESP32 Dev Board x11
- DHT22 x10
- 4.7kΩ Resistors x15
- 100nF Caps x20
- PCB Prototype Board x2
- 5V 2A PSU x11
- Soldering Iron
- Solder Wire
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
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Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items