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ESP-NOW is a wireless communication protocol developed by Espressif for the ESP32 chip. It’s designed to enable low-power, direct, peer-to-peer communication between ESP32 devices, without needing a Wi-Fi network or router. This allows ESP32 devices to exchange data directly, which can be especially useful in applications like IoT, sensor networks, or remote controls.
Some key features of ESP-NOW include:
- Low Power Consumption: It’s designed to be power efficient, making it suitable for battery-powered projects.
- No Router or Wi-Fi Access Point Required: ESP-NOW operates in a mesh network-like fashion, where devices can communicate with each other directly, simplifying the network setup.
- Short Range Communication: While the communication range is typically shorter than a Wi-Fi network, it can still be effective for devices in proximity to each other (usually up to 200 meters in ideal conditions).
- Secure Communication: It supports encryption, providing secure data transmission between devices.
- Easy Setup: It simplifies the setup process compared to other communication protocols since there’s no need for configuring routers or Wi-Fi networks.
ESP-NOW can be used for applications like remote control systems, data sharing between sensors, and even simple wireless communication between two ESP32 devices in a local area.