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Novel Bits Novel Bits

Free Bluetooth LE Crash Course — 12 Lessons in 12 Days

A free 12-day email course covering Bluetooth Low Energy fundamentals — from the radio and advertising to connections, GATT, and security. Join thousands of developers.

Free Email Course

Learn Bluetooth LE Basics in 12 Days

A free crash course delivered straight to your inbox. One lesson per day, no fluff — just the fundamentals you need to start building with Bluetooth Low Energy.

Includes a downloadable Bluetooth LE cheat sheet

Thousands of developers enrolled·12 days·5 min/lesson·100% free

9,700+
Newsletter Subscribers
12
Focused Lessons
5 min
Per Lesson

Developers from Nordic Semiconductor, Silicon Labs, Texas Instruments, Apple, Google, Samsung, and more.

What You'll Learn

12 lessons delivered over 12 days, each taking about 5 minutes to read.

1
Welcome
Meet your instructor, learn what to expect, and get your first mini-lesson on what makes Bluetooth LE different.
2
What is Bluetooth LE?
Bluetooth Classic vs. Low Energy, key specifications, and why it matters.
3
The Bluetooth LE Radio
RF fundamentals, the 2.4 GHz ISM band, and how 40 channels work together.
4
When Should You Use Bluetooth LE?
A practical decision framework for choosing Bluetooth LE over other wireless technologies.
5
How Devices Discover Each Other
Advertising, scanning, and the 3 advertising channels.
6
Inside an Advertising Packet
Packet structure, AD types, and what information devices broadcast.
7
Establishing a Connection
Central and peripheral roles, connection parameters, and how two devices link up.
8
Data Exchange, Part 1: The Attribute Protocol
How Bluetooth LE structures and transfers data using ATT.
9
Data Exchange, Part 2: GATT in Practice
Services, characteristics, and a real-world weather station example.
10
Security and Privacy
Pairing, bonding, encryption, and how Bluetooth LE protects your data.
11
What's Next? Your Bluetooth LE Roadmap
Resources, recommended tools, and your next steps for deeper learning.
12
BONUS: Your Bluetooth LE Cheat Sheet
A quick-reference recap of everything you learned, plus what comes next.

Who This Course Is For

Whether you're building hardware or software, this course gives you the foundation you need.

💻

Embedded Developers

Adding wireless connectivity to your MCU-based projects and IoT devices.

📱

Mobile App Developers

Building iOS or Android apps that communicate with Bluetooth LE peripherals.

📈

PMs & Engineers

Evaluating Bluetooth LE for your product and need to understand the technology.

Peek Inside a Lesson

Each lesson is a focused email that teaches one concept clearly. Here's a preview from Lesson 3.

Mohammad Afaneh <mohammad@novelbits.io>
The Bluetooth LE Radio
Lesson 3 of 12

In yesterday's lesson we covered a few high-level aspects of Bluetooth LE technology. Today, we'll dig deeper into how the radio actually works.

Let's start by looking at how Bluetooth LE utilizes the 2.4 GHz band:

  • Bluetooth LE shares the 2.4 GHz band with other technologies including Bluetooth Classic, Wi-Fi, and some IEEE 802.15.4-based technologies.
  • The Bluetooth LE RF spectrum is divided into forty 2-MHz wide channels.
  • Three of these are primary advertising channels (channels 37, 38, and 39), placed to avoid the most common Wi-Fi channels.

There are three PHY configurations available in Bluetooth LE:

  • 1M PHY: 1 Mbps — mandatory for all devices
  • 2M PHY: 2 Mbps — higher throughput (v5.0+)
  • Coded PHY: 125/500 kbps — long range (v5.0+)
This is 1 of 12 lessons. Each takes about 5 minutes to read.
Mohammad Afaneh
Mohammad Afaneh
Founder, Novel Bits
10+ Years Bluetooth LE Published Author 9,700+ Newsletter Subscribers

Your Instructor

I'm Mohammad Afaneh, author of Intro to Bluetooth Low Energy and founder of the Bluetooth Developer Academy. I've been developing Bluetooth LE products since 2014, working on everything from wearables and beacons to industrial sensors, and I've trained developers at companies like Nordic Semiconductor and Silicon Labs.

I created this crash course because I remember how overwhelming Bluetooth LE felt when I was starting out. The specification is over 3,000 pages long, and finding clear, beginner-friendly explanations was nearly impossible.

This 12-day course distills years of experience into the essentials you actually need. No jargon overload, no skipped steps — just a clear path from zero to confident.

Frequently Asked Questions

Yes, 100% free. No credit card, no paywall. We do mention some paid resources toward the end for those who want to go deeper, but every lesson stands completely on its own.
No problem. Every lesson stays in your inbox, so you can read them at your own pace. There's no deadline.
Not at all. This course starts from the very beginning and assumes no prior Bluetooth knowledge. Basic familiarity with electronics or software development is helpful but not required.
Each lesson takes about 5 minutes to read. Short enough to fit into a coffee break, long enough to teach you something meaningful.
You'll also receive our weekly Bluetooth & UWB newsletter every Friday — industry news, tips, and tutorials in a single email. You can unsubscribe from either at any time with one click.
Even experienced developers find gaps in their foundational knowledge. This course fills those gaps with clear explanations you won't find in the spec. And since it's free, there's no risk in trying.

Start Learning Bluetooth LE Today

12 days. 12 lessons. Everything you need to get started with Bluetooth Low Energy.

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