Inside Bluetooth Low Energy Access

Bluetooth Low Energy (BLE) is essentially the "minimalist" sibling of classic Bluetooth, designed to stay in a near-zero power state and wake up only for tiny bursts of communication. This architecture allows devices like heart rate monitors and smart tags to run for years on a single coin-cell battery.

This is the most important part for developers. It defines how data is exchanged using a hierarchy of Services and Characteristics (e.g., a "Battery Service" with a "Level" characteristic). Inside bluetooth low energy

This is the hardware layer responsible for actually sending and receiving signals over the 2.4 GHz band. Bluetooth Low Energy (BLE) is essentially the "minimalist"

Bluetooth Low Energy (BLE) is essentially the "minimalist" sibling of classic Bluetooth, designed to stay in a near-zero power state and wake up only for tiny bursts of communication. This architecture allows devices like heart rate monitors and smart tags to run for years on a single coin-cell battery.

This is the most important part for developers. It defines how data is exchanged using a hierarchy of Services and Characteristics (e.g., a "Battery Service" with a "Level" characteristic).

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