Offline Mesh Chat via ESP-NOW Kit with ESP32 + LED
Offline Mesh Chat Messenger Kit – ESP-NOW with 3 ESP32 & 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.
In a world that assumes constant internet, this kit proves how powerful local, instant communication can be. You’ll program three ESP32 boards to form a text-based mesh chat using ESP-NOW — a fast peer-to-peer protocol that needs no router, no SIM, and no cloud. It’s the same underlying tech that coordinates drone swarms and industrial sensor meshes, now distilled into a hands-on project you can build in an afternoon.
What You'll Build
You will create a fully functional three-node mesh messenger. Type a message on the Serial Monitor of any ESP32, and it appears on the OLED screens of the other two boards — no internet, no wires. Each node acts as both a sender and a relay, demonstrating decentralized communication you can demonstrate at school labs, hackathons, or off-grid experiments.
What You'll Learn
- Master ESP-NOW protocol: configure peer-to-peer data transfer between multiple ESP32s without a router.
- Interface OLED displays over I2C to show live, scrolling text messages.
- Use tactile buttons to trigger message sending, message clear, or network resets.
- Debug mesh network timing, collision handling, and power management for reliable, low‑latency communication.
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 3 |
| 0.96in OLED | 3 |
| Tactile Button | 3 |
| 4.7kΩ Resistors | 10 |
| 100nF Caps | 10 |
| 400-pt Breadboard | 3 |
| M-M Wires | 30 |
| Micro USB Cable | 3 |
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
Ideal for CBSE Class 11-12 students working on network protocols in Informatics Practices or AI electives, and first-year B.Tech ECE/EEE candidates tackling IoT foundations. Perfect for ATL Tinkering Lab challenges and Smart India Hackathon prototypes that need offline, decentralized communication without relying on an internet backbone.
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 on the box to open the AI build companion trained on this mesh chat project. If you need more help, WhatsApp our support team directly — we typically respond within a few hours.
Do I need an internet connection to use the chat after programming?
No, the ESP-NOW protocol works entirely offline. Once you upload the code, the three boards communicate directly without any router or internet. Just power them up within 200 meters of each other.
Can I add more than three nodes?
Yes, ESP-NOW supports up to 20 peers. The included code and hardware are designed to expand easily; you can order extra ESP32 boards and OLED displays separately.
Is prior coding experience required?
The kit comes with Arduino IDE sketches and clear comments. Basic familiarity with uploading code is helpful, but the AI companion walks you through every line — no heavy programming needed.
Three ESP32 boards exchange text messages using ESP-NOW peer-to-peer protocol without any router or internet.
What's in this kit
- ESP32 Dev Board x3
- 0.96in OLED x3
- Tactile Button x3
- 4.7kΩ Resistors x10
- 100nF Caps x10
- 400-pt Breadboard x3
- M-M Wires x30
- Micro USB Cable x3
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