ESP-NOW Wireless Smoke Alarm System (No Internet)

This project uses ESP-NOW, a low-power, connectionless communication protocol developed by Espressif that allows devices to communicate directly with each other without a Wi-Fi router.

How it Works (No Internet)
Detection: The MQ-2 sensor connected to the sender ESP module detects smoke.
Processing: The sender ESP32/ESP8266 checks if the gas concentration exceeds a predefined threshold.
Wireless Alert: Instead of using Wi-Fi, the sender uses the ESP-NOW protocol to send a "danger" packet directly to the receiver node (within a range of roughly 50–100 meters).
Local Alert: The receiving ESP module receives the message and triggers an audio/visual alarm (buzzer/LED).

Key Features
No Wi-Fi/Internet Required: Works in remote locations or during internet outages.
Low Latency: Fast, direct peer-to-peer communication.
Low Power: Suitable for battery operation.

👉 Watch till the end to see the science magic in action!
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Видео ESP-NOW Wireless Smoke Alarm System (No Internet) канала ACG CREATIVE .