ESP32 Web Serial Plotter Kit with ESP32 + LDR
ESP32 Web Serial Plotter Kit: Stream Live Sensor Graphs to Your Browser
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 the knob of a potentiometer or shine a flashlight on the LDR, and watch a real-time graph update instantly in your web browser. This kit transforms your ESP32 into a wireless sensor streaming hub—no extra display, no complex setup, just instant visual feedback of analog readings over WiFi.
What You'll Build
You'll create a full-stack sensor dashboard: the ESP32 reads analog values from the included LDR and two potentiometers, runs a WebSocket server, and streams data to a web page that plots live line graphs. Open the page on your laptop, tablet, or phone connected to the same WiFi, and see every sensor change in milliseconds.
What You'll Learn
- Program the ESP32 to read analog sensors using its ADC (analog-to-digital converter)
- Run a WebSocket server on the ESP32 and serve a real-time HTML/JavaScript client
- Plot multi-channel live graphs using a lightweight JavaScript library
- Experiment with sensor response curves: LDR voltage changes with light, potentiometer with rotation
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| 10kΩ Potentiometer | 2 |
| LDR | 1 |
| 10kΩ Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 15 |
| Micro USB Cable | 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
Perfect for CBSE Class 11-12 students building a sensor-data visualization project, B.Tech ECE/EEE students exploring IoT communication protocols, and ATL Tinkering Lab mentors looking for a plug-and-play data logging demonstration. Young makers aged 13+ can follow the guided code to see results independently; younger builders (10+) can assemble hardware with adult assistance and still interact with the live graph. It’s also a favorite for Smart India Hackathon rapid prototyping.
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?
The kit includes a QR code linking to an AI build companion pre-trained with troubleshooting for this exact project, plus WhatsApp support from our team in Bengaluru.
Do I need to know JavaScript or HTML to use this kit?
No, the web client code is pre-written and fully commented. You'll upload it to the ESP32, and the browser page loads automatically. If you want to tweak colors or sensor ranges, simple copy-paste changes are all that's needed.
Can I view the graph without an internet connection?
Yes, the ESP32 creates its own WiFi access point. No internet is required—connect your device's WiFi to the ESP32 network and open the provided local IP address.
What if I want to add an extra LDR or a different sensor later?
The code is structured for easy expansion. The AI companion can guide you through adding up to 6 analog channels, and our WhatsApp team can share modifiable code snippets.
ESP32 samples ADC and streams values to a WebSocket client that plots a live graph in the browser.
What's in this kit
- ESP32 Dev Board
- 10kΩ Potentiometer x2
- LDR
- 10kΩ Resistors x5
- 400-pt Breadboard
- M-M Wires x15
- Micro USB Cable
Other projects you can build
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