The "brain" of the radio. It uses a state machine to manage whether the device is Advertising (broadcasting its presence), Scanning (looking for others), or in a Connection state exchanging data. 2. The Host (The "Brain")

Handles pairing and encryption to keep the data stream private. 3. The Application (The "User Interface") BLE with ESP32 tutorial part 1: the Server

This is the hardware layer responsible for actually sending and receiving signals over the 2.4 GHz band.

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Inside Bluetooth Low Energy May 2026

Handles pairing and encryption to keep the data stream private. 3. The Application (The "User Interface") BLE with ESP32 tutorial part 1: the Server

This is the hardware layer responsible for actually sending and receiving signals over the 2.4 GHz band.