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ESP32

ESP32BeginnerIntermediateesp32esp-nowpeer-to-peer

ESP32 ESP-NOW Communication

An ESP32-based ESP-NOW system enabling fast, peer-to-peer wireless communication without Wi-Fi or internet.

₹6424.00

Inclusive of all taxes

Development fee₹2359.00

Components (from library)₹4065.00

Total per unit (incl. GST)₹6424.00

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Quantity:

Total: ₹6424.00

₹6424.00

Inclusive of all taxes

Components

5 items

Difficulty

Intermediate

Build Time

1.5 – 2.5 hours

Project Details

The ESP32 ESP-NOW Communication project enables direct, encrypted data exchange between ESP32 devices using the ESP-NOW protocol. It operates independently of routers, offering high speed and low power consumption. This makes ESP-NOW ideal for smart sensor networks, remote control systems, mesh-like IoT applications, and battery-powered devices. The project demonstrates how to initialize ESP-NOW, register peer MAC addresses, and send/receive data packets wirelessly between ESP32 nodes.

How It Works

The ESP32 initializes Wi-Fi in station mode and enables the ESP-NOW protocol. Devices register each other's MAC addresses as peers. Data packets are structured and sent wirelessly between ESP32 devices. The receiver processes incoming data through a callback function. Optional acknowledgment can be sent back to confirm receipt. The system operates independently of routers, providing fast, low-latency communication ideal for IoT applications.

Prerequisites

Basic knowledge of ESP32 programming, familiarity with Arduino IDE, understanding of C/C++ programming concepts, and experience with wireless communication concepts.

What You'll Learn

ESP-NOW protocol

Understanding and implementing the ESP-NOW wireless protocol

Peer-to-peer networking

Setting up direct communication between ESP32 devices without routers

Low-latency communication

Achieving fast data transmission with minimal delay

MAC address handling

Managing device identification and peer registration

Secure IoT networking

Implementing encryption and security measures for wireless communication

Key Features

✓

No router required

Operates independently of Wi-Fi routers or internet connection

✓

Fast transmission

Very low latency for real-time communication

✓

Encrypted communication

Supports AES-128 encryption for secure data exchange

✓

Scalable node support

Can connect up to 20+ devices in a network

What's Included in the Kit

ESP32 ESP-NOW Communication - All components

Component	Part ID	Qty	Price	Description
ESP32 Development Board	-	2	₹3363.00₹1682.00 × 2	-
LED / Sensor (optional)	-	2	₹378.00₹189.00 × 2	-
Breadboard	-	2	₹153.00₹77.00 × 2	-
Jumper Wires	-	1	₹171.00	-
USB Power	-	2	₹0.00₹0.00 × 2	-

Pin Connections

MCU Pin	Connected To	Purpose	Notes
GPIO pins	LED/Sensor (optional)	Digital I/O for optional components	Specific pins depend on component choice
USB port	Computer	Programming and power	Standard USB connection

Tools Required

Computer

USB cables

Safety Precautions

Electrical

⚠Ensure proper power supply voltage (3.3V for ESP32)
⚠Avoid short circuits on breadboard
⚠Disconnect power before making wiring changes

Handling

⚠Handle ESP32 boards carefully to avoid static damage
⚠Do not bend or stress PCB traces

Frequently Asked Questions

Q:Can ESP-NOW work with Wi-Fi together?

A: Yes, but careful channel management is needed to avoid interference.

Q:What is the maximum range?

A: Approximately 200 meters in line-of-sight conditions, though actual range depends on environment and obstacles.

Q:Is encryption supported?

A: Yes, ESP-NOW supports AES-128 encryption for secure communication.

#esp32#esp-now#peer-to-peer#iot-wireless#low-latency

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