Arduino Bluetooth Low Energy (BLE) From Ground Up™

Explore the physical layer of the Bearly architecture, the radio hardware behind 2.4 ghz communication, frequency hopping spread spectrum, and the advertising and data channels.

Explore how the host controller interface (HCI) links the host and controller to exchange commands, events, and data through physical transport and the logical packet formats.

Learn the generic access profile gap and how devices interact via roles, advertisements, and connection establishment. Differentiate broadcast, observer, peripheral, and central roles, including advertising packets and two-way data transfer.

Explore how advertising interval controls advertisement packet frequency and battery life, from 20 milliseconds to 10.24 seconds, and learn scanning parameters including scan type, scan window, and scan interval.

Explore Bluetooth low energy modes and procedures, including broadcast, discoverable and non connectable, plus bondable and non bondable. Understand how peripheral and central roles affect discoverability, connectability, and bonding.

Analyze the parts of a Bluetooth attribute, including the value, handle, and permissions, and understand how 512-byte value limit, 16-bit handle, and permissions govern read, write, notify, and indicate operations.

Explore the GATT hierarchy from server to services (primary and secondary), characteristics, and descriptors, and learn how handles, UUIDs, properties, and permissions enable data exchange.

Learn how to implement event handlers and callback functions in Arduino BLE. Set up connections, disconnections, and characteristic writes to trigger background actions and control peripherals.

Explore Bluetooth Low Energy security concepts, including authentication, authorization, integrity, confidentiality, and privacy; learn pairing, bonding, and encryption, and threats like passive eavesdropping, identity tracking, and man-in-the-middle attacks.

Close the course with closing remarks that express gratitude and invite questions or suggestions. Reach out via message or the questions area to share feedback.