Bluetooth ATT and GATT Explained (Connection-Oriented Communication)
A deep dive into Bluetooth LE ATT and GATT: attributes, services, characteristics, and profiles for connection-oriented data transfer.
Bluetooth® Low Energy Protocol
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The Bluetooth Low Energy Protocol Stack: Understanding the Layers
Understand the Bluetooth LE protocol stack layers including GAP roles, Link Layer states, and the Physical Layer.
What is a Protocol Stack? And Why is it Layered?
Protocol stacks are important for a variety of reasons. But what are they, exactly?
Communications Protocols And Why We Need Them
A communications protocol is a "set of rules that must be obeyed by all users in a device network." This is a very grand definition, but it is also very dr
Maximum Data Size in a Bluetooth Advertising Packet
Maximum data size in a Bluetooth LE advertising packet: legacy (31 bytes) vs extended (254 bytes) advertising PDUs, plus payload optimization tips.
Bluetooth vs. Bluetooth Low Energy: What's the Difference?
Bluetooth Classic (BR/EDR) vs Bluetooth Low Energy: compare power consumption, range, data rate, topology, tools, and cost.
How Bluetooth Low Energy Works: Advertisements (Part 2)
Learn how Bluetooth LE advertising works in practice: broadcasting vs. connectable devices, discoverable modes, advertising parameters, intervals.
How Bluetooth Low Energy Works: 21 Interesting Facts
21 key facts about Bluetooth Low Energy: backward compatibility, long-range mode, advertising packets, PHY options, and power optimization.
How Bluetooth Low Energy Works: Advertisements (Part 1)
How Bluetooth LE advertisements work: GAP roles, advertising channels, packet formats, PDU types, and legacy vs extended advertising.
A Deep Dive Into Eddystone Beacons (nRF52 + Zephyr use case)
Google's Eddystone beacon standard explained: UID and URL frame types, packet formats, and a hands-on implementation with Zephyr RTOS and the nRF52.
Bluetooth 5 Advertisements: Everything you need to know
You’ve probably heard so much about the recently released Bluetooth 5.
How do I choose a UUID for my custom services and characteristics?
Learn how to choose a UUID for custom Bluetooth LE GATT services and characteristics, avoid reserved UUIDs, and understand the Bluetooth Base UUID format.