What is *Building Wireless Sensor Networks* by Robert Faludi about?

*Building Wireless Sensor Networks* provides a hands-on guide to designing IoT systems using ZigBee and XBee radios, with step-by-step projects ranging from basic sensor networks to advanced applications like smart dust. It covers power management, network reliability, and connecting systems to the internet, while addressing real-world challenges like weatherproofing and energy harvesting. Ideal for bridging theory with practical implementation.

Who should read *Building Wireless Sensor Networks*?

Inventors, engineers, students, and DIY enthusiasts interested in IoT, robotics, or environmental monitoring will benefit. The book balances technical depth with approachable tutorials using Arduino and XBee radios, making it suitable for both professionals seeking deployment strategies and hobbyists exploring wireless networking.

Is *Building Wireless Sensor Networks* worth reading?

Yes—it’s praised for clear code examples, real-world project breakdowns, and covering niche topics like localization and time synchronization. Faludi’s expertise (featured in *The New York Times* and academia) ensures relevance for developing scalable, energy-efficient sensor networks.

How does *Building Wireless Sensor Networks* address power management?

The book details strategies like energy harvesting (using solar/motion), ultra-low-power radios, and battery optimization for remote nodes. It emphasizes designing systems that minimize replacements—critical for applications like smart buildings or wildlife tracking.

What are ZigBee and XBee’s roles in wireless sensor networks?

ZigBee enables low-power, mesh-network communication between devices, while XBee radios implement this protocol. Faludi explains configuring XBee modules for data transmission, API modes, and gateways to external networks like the internet.

Does the book cover IoT integration?

Yes. Projects demonstrate linking sensor networks to cloud platforms via Raspberry Pi/Arduino gateways. Faludi also explores machine learning integration for autonomous decision-making—key for smart cities and industrial IoT.

What are “smart dust” applications in the book?

Smart dust refers to miniature, self-sufficient sensors deployed en masse for tasks like air quality monitoring. Faludi discusses their potential in agriculture and disaster response, alongside technical hurdles like size constraints and energy efficiency.

How does *Building Wireless Sensor Networks* compare to general IoT guides?

It specializes in low-power, distributed sensing vs. broader IoT overviews. Unique content includes enclosure design for outdoor use, interference mitigation, and hands-on chapters using Fritzing schematics—making it a manual for deployable systems.

Беспроводные датчики на базе Arduino: проектирование сетей ZigBee и 6LoWPAN

with ZigBee, XBee, Arduino, and Processing

Роберт Фалуди

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Глава 1

The Wireless Revolution: Building Smart Networks for the Connected World

In a world increasingly defined by connectivity, Robert Faludi's "Building Wireless Sensor Networks" arrived as a transformative guide that democratized what was once the exclusive domain of specialized engineers. Published in 2010, this practical manual quickly became the bible for makers, hobbyists, and professionals looking to harness the power of wireless communication. The book's influence extends far beyond technical circles-Elon Musk reportedly kept a copy in his early SpaceX days, and it's been spotted on the bookshelves of Silicon Valley innovators who later developed IoT platforms worth billions. What makes this work particularly special is how it bridges the gap between complex networking concepts and hands-on implementation, empowering readers to build systems that can sense, communicate, and act upon the world around them-all without wires.

Глава 2

The Foundation: Understanding ZigBee and Wireless Communication

Wireless sensor networks represent a fundamental shift in how we interact with our environment. Unlike traditional wired systems that require physical connections between components, wireless networks can place sensors and actuators virtually anywhere-from remote natural settings to minimalist interiors where cables would be intrusive. This flexibility opens up possibilities for monitoring mobile objects, people, animals, and environments previously inaccessible to electronic sensing. At the heart of Faludi's approach is the ZigBee protocol, a wireless communication standard specifically designed for low-power, low-bandwidth applications. What makes ZigBee particularly valuable for sensor networks is its ability to automatically form self-healing mesh networks. Unlike simpler point-to-point wireless solutions, ZigBee devices can relay messages through intermediate nodes, extending range and improving reliability without direct intervention. The book focuses specifically on XBee radios-small, affordable modules that implement the ZigBee protocol in a beginner-friendly package. These modules come in different varieties, but Faludi recommends Series 2 hardware for its mesh networking capabilities. While Series 1 XBees offer simpler point-to-point communication, Series 2 enables the creation of robust networks with multiple nodes that can generate rich data sets and support complex interactions. Understanding the physical components is just the beginning. Faludi introduces the concept of network roles: every ZigBee network requires exactly one coordinator node that establishes and manages the network, while other devices operate as routers (which can relay messages) or end devices (which can't relay but can enter power-saving sleep modes). This hierarchy creates networks that are both flexible and resilient, capable of maintaining communication even when individual nodes fail or move. The book doesn't just explain these concepts abstractly-it walks readers through creating their first network connection step by step, from configuring radios with the proper firmware to establishing communication between devices. This hands-on approach demystifies what might otherwise seem like impenetrable technology, making wireless networking accessible to anyone with basic technical skills.

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Глава 3

Arduino Integration: Adding Intelligence to Wireless Systems

While XBee radios handle wireless communication admirably, they have limited processing capabilities on their own. This is where Arduino microcontrollers enter the picture, providing the "brains" that can make decisions based on sensor data and control more complex outputs. Arduino and XBee form a perfect partnership in wireless sensor systems. The Arduino platform offers local logic processing, additional input/output connections, faster prototyping capabilities, and expanded connectivity options. Together, they create a flexible foundation for building everything from simple remote sensors to sophisticated interactive installations. Faludi introduces Arduino through increasingly complex doorbell projects that demonstrate the fundamental concepts of wireless communication. The basic doorbell uses two Arduino boards with different code: one with a button input and one with a buzzer output. When the button is pressed, the first Arduino sends a signal through its XBee radio, which is received by the second Arduino's XBee, triggering the buzzer. This simple project illustrates several key concepts: how to connect XBee radios to Arduino boards, how to program Arduino to send and receive wireless messages, and how to create a complete system that responds to physical inputs with physical outputs in another location. The enhanced "feedback doorbell" builds on this foundation by adding two-way communication-when the button is pressed, it not only sends a signal to ring the bell but also waits for confirmation that the signal was received, lighting an LED to provide visual feedback to the person at the door. These projects demonstrate the power of combining wireless communication with programmable microcontrollers. The Arduino handles the logic and physical interfaces, while the XBee manages the wireless transmission of data between locations. This division of labor allows each component to do what it does best, creating systems that are both powerful and flexible. The integration of Arduino with XBee requires just four connections: power (3.3V), ground, and the transmit/receive pins that enable serial communication between the two devices. This simple interface belies the sophisticated capabilities it enables-the Arduino can send commands through the XBee to remote devices and receive data from distant sensors, all while performing local processing and control functions.

Глава 4

Direct I/O: Simplifying Sensor Networks

One of the most powerful features of XBee radios is their ability to handle inputs and outputs directly, without requiring an external microcontroller. This "XBee direct" approach allows for simpler sensor nodes that can both collect data and perform basic actuations independently, making it ideal for distributed sensing applications and basic control systems. XBee Series 2 hardware offers 10 configurable pins that can function as digital inputs (for switches, motion sensors, or contact closures), digital outputs (for LEDs, relays, small motors, or buzzers), or analog inputs (for sensors measuring phenomena like light, temperature, humidity, soil moisture, or gas concentrations). While these capabilities are more limited than what an Arduino provides, they're sufficient for many basic sensing and control applications, particularly in environmental monitoring and home automation scenarios. Using XBee direct offers several significant advantages. The reduced project size enables deployment in inconspicuous locations like window frames or ceiling corners, or in space-constrained applications such as wearable devices. The lighter weight makes it particularly suitable for aerial applications like drone-mounted sensors or hanging installations. Lower power consumption, typically drawing 1-50mA compared to 20-100mA for Arduino-based solutions, extends battery life significantly for remote deployments. Cost savings become substantial in large sensor networks, where eliminating a $20-30 microcontroller from each node can reduce overall system cost by hundreds of dollars. The simpler implementation also means fewer potential points of failure and easier troubleshooting. Faludi demonstrates these capabilities through a "romantic lighting sensor" project that provides feedback about ambient light levels. The remote sensor uses a photoresistor connected directly to an XBee analog input pin, which samples the light level at configurable intervals (typically 1-10 seconds) and transmits the data to a base station. The base station interprets the readings using predetermined thresholds and indicates whether the lighting is too dark (below 20% brightness), perfect for romance (20-60% brightness), or too bright (above 60% brightness). The enhanced version adds feedback right at the sensor location by connecting an RGB LED to three of the XBee's digital output pins. This allows the system to provide immediate visual feedback about lighting conditions through color coding (red for too bright, green for perfect, blue for too dark) without requiring the user to check the base station. The system can be further expanded to control smart lighting systems or motorized blinds using additional output pins. These projects illustrate how XBee radios can function as complete sensor nodes with minimal additional components - often just a power supply, sensor, and basic passive components like resistors. For simple applications where local decision-making isn't required, this approach can significantly reduce complexity, cost, and power consumption compared to solutions that incorporate microcontrollers at every node. The direct I/O capability is particularly valuable in applications like environmental monitoring, security systems, and basic home automation where simple sensor data collection and basic actuation are the primary requirements.

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Глава 5

The Power of API Mode: Building Scalable Networks

As sensor networks grow beyond a few nodes, the limitations of transparent mode (where XBees simply pass data through) become apparent. This is where API (Application Programming Interface) mode reveals its value, providing structured communication that enables more sophisticated network management. API mode uses a specific frame format for all communications with the XBee radio. Each frame begins with a start delimiter (0x7E), followed by length bytes indicating how many bytes are in the frame, the frame data itself (which varies depending on the type of message), and a checksum for error detection. This structured approach ensures that data can be reliably interpreted by both the radio and the connected computer or microcontroller. Different frame types serve different purposes: AT Command frames configure the local radio, ZigBee Transmit Request frames send data to remote radios, ZigBee Receive Packet frames deliver incoming messages with sender information, and I/O Data Sample Rx Indicator frames contain structured sensor readings from remote XBees. This structured communication enables several capabilities that aren't possible in transparent mode: • Receiving sender information with each incoming message • Sending to different destinations without entering command mode • Getting delivery confirmation for each transmission • Receiving structured sensor data in a consistent format • Remotely configuring other radios on the network Faludi demonstrates these capabilities through a temperature sensor network project. Multiple sensor nodes, each consisting of an XBee with a temperature sensor connected directly to an analog input pin, transmit readings to a central coordinator. A Processing program on a computer connected to the coordinator displays these readings as animated thermometers, with one for each detected sensor. The power of API mode becomes evident as the network scales-adding additional sensor nodes requires no changes to the base station software, which automatically detects new nodes and displays their data. This scalability is crucial for real-world applications where networks might need to grow over time or accommodate mobile nodes that join and leave the network dynamically.

Глава 6

Power Management: Extending Battery Life with Sleep Mode

For wireless sensor networks deployed in remote locations or mobile applications, power consumption is a critical concern. XBee's sleep mode capabilities address this challenge by allowing radios to temporarily shut down when not actively communicating, dramatically extending battery life. This feature is particularly crucial for environmental monitoring stations, agricultural sensors, and industrial IoT applications where frequent battery replacement is impractical or costly. Sleep mode is particularly valuable for end devices-simplified versions of router radios that can join networks and communicate but cannot relay messages between other devices. When an end device sleeps, its radio is completely powered down and unreachable. The parent device (a router or coordinator) acts as a mailbox, storing messages intended for the sleeping device and forwarding them when it wakes. This store-and-forward mechanism ensures no critical data is lost during sleep periods, while maintaining network reliability. The power-saving benefits are substantial and scale dramatically with sleep cycle adjustments. For example, a battery that would last 4 hours with continuous operation might last 8 hours with a 50% sleep cycle, 10 days with a 1:59 second wake/sleep ratio, or over a year with a 20ms:59.98s wake/sleep ratio. These improvements follow a nearly linear relationship with duty cycle reduction. Real-world implementations have shown that devices running on two AA batteries can operate for multiple years when properly configured with aggressive sleep cycles. Configuring sleep behavior involves several AT commands, primarily Sleep Mode (SM), Sleep Period (SP), and Time Before Sleep (ST). The SM command offers multiple sleep modes, including pin hibernation (SM=1), cyclic sleep (SM=4), and cyclic sleep with pin wake (SM=5). SP determines the duration of sleep periods, while ST sets how long the device waits in idle mode before sleeping. These commands work together to define how your radio sleeps and wakes, balancing power consumption against responsiveness for your specific application needs. Faludi demonstrates these concepts by modifying the temperature sensor network to use battery-powered end devices with sleep mode enabled. The sensors wake periodically to take readings and transmit them to the base station, then return to sleep to conserve power. In his example implementation, sensors wake every 5 minutes to transmit temperature readings, resulting in battery life extending from days to months. Despite the intermittent communication, the network continues to function effectively, displaying updated readings whenever new data arrives. The system can be further optimized by adjusting wake periods based on environmental conditions or application requirements. This approach to power management is essential for practical deployments of wireless sensor networks, enabling long-term operation without frequent battery changes or complex power infrastructure. Advanced implementations can incorporate adaptive sleep cycles that respond to environmental conditions or event triggers, further optimizing power usage while maintaining necessary monitoring capabilities. Some deployments combine sleep mode with solar charging or energy harvesting techniques for indefinite operation in remote locations.

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Глава 7

Bridging Networks: Connecting to the Internet and Beyond

While ZigBee networks excel at local wireless communication, their true potential emerges when connected to other networks-particularly the Internet. This connection enables sensor data to be shared globally, accessed remotely, and integrated with other systems and services. Gateways serve as bridges between different network protocols, allowing each to do what it does best. Every XBee radio already functions as a gateway between two protocols: ZigBee for wireless communication and TTL serial for local wired connections. More sophisticated gateways connect ZigBee networks to protocols like Ethernet, WiFi, cellular data, Bluetooth, and others. Internet gateways are particularly compelling because they connect to a vast network reaching almost everywhere. The Internet offers powerful capabilities for data storage and presentation, allowing sensor networks to store information in cloud services and make data accessible from anywhere at any time. Faludi introduces Digi's ConnectPort gateways, which use familiar XBee radios and include an internal Python interpreter. This built-in Python capability allows you to write programs that manipulate data flowing between your sensor network and the Internet, with preloaded XBee libraries making it simple to script commands and transformations inside the gateway itself. The XBee Internet Gateway (XIG) project simplifies this connection further by handling the complexities of Internet protocols behind the scenes. This Python program mirrors web browser interactions-any radio sending a plain-text URL receives back the standard results, with redirects, timeouts, and security handled automatically. The Twitter Reader project demonstrates these capabilities by displaying tweets on a 32-character LCD screen. Using the XBee Internet Gateway, it connects to a web service that processes Twitter feeds, bringing social media into the physical world in a tangible way. These gateway technologies transform isolated sensor networks into components of larger systems, enabling applications that combine local sensing and actuation with global data sharing and remote control.

Глава 8

Advanced Topics: Security, Data Sharing, and Future Directions

As wireless sensor networks transition from experimental projects to mission-critical production systems, considerations like security, data sharing, and interoperability become paramount. Faludi addresses these advanced topics while maintaining accessibility for readers still developing their expertise in the field. ZigBee's comprehensive security architecture includes multiple layers of protection through two primary types of encryption keys. Network keys provide hop-by-hop protection across private networks, securing data as it moves between adjacent nodes. Link keys offer end-to-end protection for shared networks where intermediate nodes cannot be fully trusted. Both security mechanisms utilize 128-bit AES encryption, the same standard used in banking applications. However, these security features come with tradeoffs - they add approximately 14 bytes of overhead per packet, increasing transmission latency and reducing available payload size. The choice of security approach must be carefully matched to specific applications - financial transactions or medical monitoring demand robust protection, while simple applications like interactive art installations or home automation might prioritize performance and responsiveness over maximum security. For sharing sensor data with the broader Internet ecosystem, Faludi explores Pachube (later renamed to Cosm and then Xively) as a pioneering platform for IoT data management. This platform provides public APIs for data upload, download, and visualization capabilities for Internet-connected sensor networks. The book provides detailed tutorials showing how to modify the temperature sensor network to automatically upload readings to Pachube using REST APIs. Examples include creating data feeds, setting up authentication, formatting payload data, and implementing error handling. This enables integration with web applications, mobile apps, and third-party analysis tools. Looking toward future developments, Faludi examines emerging trends in the ZigBee ecosystem, including strategic collaboration with the HomePlug Alliance to develop Smart Energy 2.0 specifications. The roadmap includes expanded protocol support beyond just ZigBee, with planned additions of Thread, Matter, and other emerging IoT standards. Future innovations will likely encompass hybrid communications over both wireless and power line networks, native IPv6 addressing for direct Internet connectivity, standard UDP and TCP networking support, and modern web protocols like HTTP/REST APIs. The book explores how these advances will enable seamless integration with cloud platforms, edge computing systems, and enterprise IT infrastructure. The section concludes with a call to action for readers to develop innovative projects and actively participate in the maker community. By working with wireless sensor networks, readers join a vibrant ecosystem of creators spanning multiple disciplines - from artists and designers to engineers and scientists. The book emphasizes how sharing projects through open source repositories, maker spaces, and online communities generates valuable peer feedback while advancing collective knowledge. Specific examples highlight successful community projects in areas like environmental monitoring, precision agriculture, and interactive installations that demonstrate the creative potential of wireless sensor networks.

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Глава 9

The Cognitive Revolution of Sensor Networks

Building wireless sensor networks represents more than just a technical achievement-it's part of a broader shift in how we understand and interact with our environment. These networks extend our perceptual and cognitive abilities, allowing us to sense phenomena beyond human scale (like minute temperature changes or invisible gases) and to maintain awareness of multiple locations simultaneously. Faludi emphasizes that data collection must have purpose-data itself has no inherent value. Whether for exploratory analysis or triggering specific responses, data's value lies in the story it tells or the actions it enables. Even simple systems like doorbells represent purposeful data collection, transforming physical events (button presses) into meaningful information that drives action (sounding an alert). This perspective aligns with cognitive science principles that "thinking is for doing," as popularized by Susan Fiske. Our brains exist primarily for creating physical actions as part of the perception-action chain. Similarly, sensor networks collect data not for its own sake, but to drive meaningful actions in the physical world. By making these technologies accessible to non-specialists, Faludi's work has contributed to a democratization of environmental sensing and control. What once required specialized knowledge and expensive equipment can now be accomplished by anyone with basic technical skills and off-the-shelf components. This democratization has enabled a wave of innovation in areas ranging from home automation to environmental monitoring, urban planning, agriculture, and interactive art. The true power of wireless sensor networks lies not in the technology itself, but in how it enables new ways of understanding and interacting with the world around us. By extending our perceptual reach and providing new channels for action at a distance, these networks fundamentally change our relationship with our environment-allowing us to be more aware, more responsive, and more connected to the spaces we inhabit and the natural systems that sustain us.

Глава 10

The Creative Potential of Connected Systems

The most inspiring aspect of Faludi's approach is how it positions wireless networking as a creative medium rather than just a technical solution. Throughout the book, he encourages readers to imagine possibilities beyond the specific projects presented-to see these technologies as tools for creative expression and problem-solving in domains ranging from environmental monitoring to interactive art installations, smart agriculture, and urban planning applications. This creative potential emerges from the combination of sensing, communication, and actuation capabilities that wireless networks provide. Sensors translate physical phenomena into digital data - from temperature and humidity to motion and light levels - while communication protocols move that data across space and time through various networking topologies. Actuators then convert digital signals back into physical effects, whether that's controlling LED displays, triggering motors, or adjusting environmental controls. This chain creates a sophisticated bridge between the digital and physical worlds, enabling new forms of interaction and expression that were previously impossible or impractical. The projects in the book serve as starting points rather than endpoints-demonstrations of principles that readers can adapt and extend to suit their own interests and needs. From the simple doorbell to the Twitter Reader, each project introduces new capabilities while building on previously established foundations. For example, the basic principles used in the doorbell project - wireless communication and simple actuation - become building blocks for more complex applications like home automation systems or interactive art installations. The Twitter Reader project demonstrates how to connect physical objects to social media platforms, opening up possibilities for creating ambient information displays or physical notifications for digital events. By making these technologies accessible and understandable, Faludi has helped create a vibrant community of practice where ideas and innovations can be freely shared and built upon. The book's emphasis on open-source hardware and software, standardized protocols like ZigBee and XBee, and community resources reflects a philosophy that values collaboration and collective advancement over proprietary solutions. This approach has fostered a rich ecosystem of developers, artists, and makers who share code, design files, and project documentation through platforms like GitHub and instructables. In this way, "Building Wireless Sensor Networks" is not just a technical manual but an invitation to join a creative community-to become part of a movement that is exploring the boundaries between the digital and physical worlds. The book demonstrates how wireless networks can be used to create interactive sculptures, monitor wildlife habitats, optimize energy usage in buildings, or develop new forms of human-computer interaction. The wireless revolution it describes is not just about technology but about expanding human capabilities and creating new possibilities for how we live, work, and play in an increasingly connected world, where the distinction between digital and physical experiences continues to blur.

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Ключевые темы в Беспроводные датчики на базе Arduino: проектирование сетей ZigBee и 6LoWPAN

mesh networking
zigbee protocol
xbee radio configuration
wireless sensor integration
low power communication

Цитаты из Беспроводные датчики на базе Arduino: проектирование сетей ZigBee и 6LoWPAN

Arduino and XBee form a perfect partnership in wireless sensor systems.
The Arduino handles the logic, while the XBee manages the wireless transmission.
This simple interface belies the sophisticated capabilities it enables.
Using XBee direct offers several significant advantages.

Персонажи в Беспроводные датчики на базе Arduino: проектирование сетей ZigBee и 6LoWPAN

Robert FaludiAuthor and expert in wireless sensor networks

Об авторе

Роберт Фалуди, автор книги Building Wireless Sensor Networks: With ZigBee, XBee, Arduino, and Processing, является новатором и экспертом в области IoT и сетевых систем. Будучи опытным технологом и преподавателем, Фалуди сочетает в себе десятилетия промышленного опыта с академической строгостью.

Ранее он занимал должность главного инноватора в Digi International и преподавал в Программе интерактивных телекоммуникаций Нью-Йоркского университета (NYU), а также в Школе визуальных искусств. Его книга, опубликованная издательством O’Reilly Media, отражает его глубокий опыт в создании распределенных сенсорных систем, объединяя техническое руководство с практическими идеями для разработчиков и мейкеров.

Инновационные проекты Фалуди, включая носимые радиомодули LilyPad XBee и систему коммуникации растений Botanicalls, освещались в The New York Times, Wired, BBC World, а также выставлялись в MoMA и Чикагском музее науки и промышленности. В качестве консультанта он разрабатывал интерактивные решения для умных зданий, телематики автопарков и развлекательных платформ.

Building Wireless Sensor Networks остается основополагающим ресурсом в обучении IoT, на который широко ссылаются в сообществах мейкеров и академических программах благодаря практическому подходу к проектированию сетевых устройств.

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This learning plan is essential for aspiring IT professionals and beginners looking to pivot into the high-demand field of cybersecurity. It provides a comprehensive bridge from theoretical network concepts to practical, hands-on defensive and offensive skills.

4 h 36 m•4 Разделы

Создано выпускниками Колумбийского университета в Сан-Франциско

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1,000,000+ curious minds.

4.7

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1M+ learners

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@Moemenn

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@Chloe, Solo founder, LA

117

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@Raaaaaachelw

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@Matt, YC alum

108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC

254

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@djmikemoore

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@Pitiful

4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

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@Jaded_Falcon

201

"It is great for me to learn something from the book without reading it."

@OojasSalunke

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn

483

"Makes me feel smarter every time before going to work"

@Cashflowbubu

Узнайте больше о том, как обсуждают BeFreed в интернете

Создано выпускниками Колумбийского университета в Сан-Франциско

LOVED BY

1,000,000+ curious minds.

4.7

avg rating

1M+ learners

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA

117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum

108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC

254

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful

4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon

201

"It is great for me to learn something from the book without reading it."

@OojasSalunke

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn

483

"Makes me feel smarter every time before going to work"

@Cashflowbubu

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA

117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum

108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC

254

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful

4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon

201

"It is great for me to learn something from the book without reading it."

@OojasSalunke

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn

483

"Makes me feel smarter every time before going to work"

@Cashflowbubu

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA

117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum

108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC

254

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful

4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon

201

"It is great for me to learn something from the book without reading it."

@OojasSalunke

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn

483

"Makes me feel smarter every time before going to work"

@Cashflowbubu

Узнайте больше о том, как обсуждают BeFreed в интернете

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Глава 8

Беспроводные датчики на базе Arduino: проектирование сетей ZigBee и 6LoWPAN

ОбзорОбзор книги Беспроводные датчики на базе Arduino: проектирование сетей ZigBee и 6LoWPAN

Одна книга. Множество способов её услышать.

The Wireless Revolution: Building Smart Networks for the Connected World

The Foundation: Understanding ZigBee and Wireless Communication

Следите за каждым словом во время прослушивания

Arduino Integration: Adding Intelligence to Wireless Systems

Direct I/O: Simplifying Sensor Networks

Получите больше от Беспроводные датчики на базе Arduino: проектирование сетей ZigBee и 6LoWPAN

The Power of API Mode: Building Scalable Networks

Power Management: Extending Battery Life with Sleep Mode

Следите за каждым словом во время прослушивания

Bridging Networks: Connecting to the Internet and Beyond

Advanced Topics: Security, Data Sharing, and Future Directions

Получите больше от Беспроводные датчики на базе Arduino: проектирование сетей ZigBee и 6LoWPAN

The Cognitive Revolution of Sensor Networks

The Creative Potential of Connected Systems

Вы дочитали Беспроводные датчики на базе Arduino: проектирование сетей ZigBee и 6LoWPAN до конца

Ключевые темы в Беспроводные датчики на базе Arduino: проектирование сетей ZigBee и 6LoWPAN

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Узнать больше

1,000,000+ curious minds.

1,000,000+ curious minds.

Одна книга. Множество способов её услышать.

The Wireless Revolution: Building Smart Networks for the Connected World

The Foundation: Understanding ZigBee and Wireless Communication

Следите за каждым словом во время прослушивания

Arduino Integration: Adding Intelligence to Wireless Systems

Direct I/O: Simplifying Sensor Networks

Получите больше от Беспроводные датчики на базе Arduino: проектирование сетей ZigBee и 6LoWPAN

The Power of API Mode: Building Scalable Networks

Power Management: Extending Battery Life with Sleep Mode

Следите за каждым словом во время прослушивания

Bridging Networks: Connecting to the Internet and Beyond

Advanced Topics: Security, Data Sharing, and Future Directions

Получите больше от Беспроводные датчики на базе Arduino: проектирование сетей ZigBee и 6LoWPAN

The Cognitive Revolution of Sensor Networks

The Creative Potential of Connected Systems

Вы дочитали Беспроводные датчики на базе Arduino: проектирование сетей ZigBee и 6LoWPAN до конца

Пользователям также понравилось

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Обзор книги Беспроводные датчики на базе Arduino: проектирование сетей ZigBee и 6LoWPAN