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For Raspberry Pi, ESP32 and nRF52 with Python, Arduino and Zephyr Bluetooth Low Energy (BLE) radio chips are ubiquitous from Raspberry Pi to light bulbs. BLE is an elaborate technology with a comprehensive specification, but the basics are quite accessible. A progressive and systematic approach will lead you far in mastering this wireless communication technique, which is essential for working in low power scenarios. In this book, you’ll learn how to: Discover BLE devices in the neighborhood by listening to their advertisements. Create your own BLE devices advertising data. Connect to BLE devices such as heart rate monitors and proximity reporters. Create secure connections to BLE devices with encryption and authentication. Understand BLE service and profile specifications and implement them. Reverse engineer a BLE device with a proprietary implementation and control it with your own software. Make your BLE devices use as little power as possible. This book shows you the ropes of BLE programming with Python and the Bleak library on a Raspberry Pi or PC, with C++ and NimBLE-Arduino on Espressif’s ESP32 development boards, and with C on one of the development boards supported by the Zephyr real-time operating system, such as Nordic Semiconductor's nRF52 boards. Starting with a very little amount of theory, you’ll develop code right from the beginning. After you’ve completed this book, you’ll know enough to create your own BLE applications.

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For Raspberry Pi, ESP32 and nRF52 with Python, Arduino and Zephyr Bluetooth Low Energy (BLE) radio chips are ubiquitous from Raspberry Pi to light bulbs. BLE is an elaborate technology with a comprehensive specification, but the basics are quite accessible. A progressive and systematic approach will lead you far in mastering this wireless communication technique, which is essential for working in low power scenarios. In this book, you’ll learn how to: Discover BLE devices in the neighborhood by listening to their advertisements. Create your own BLE devices advertising data. Connect to BLE devices such as heart rate monitors and proximity reporters. Create secure connections to BLE devices with encryption and authentication. Understand BLE service and profile specifications and implement them. Reverse engineer a BLE device with a proprietary implementation and control it with your own software. Make your BLE devices use as little power as possible. This book shows you the ropes of BLE programming with Python and the Bleak library on a Raspberry Pi or PC, with C++ and NimBLE-Arduino on Espressif’s ESP32 development boards, and with C on one of the development boards supported by the Zephyr real-time operating system, such as Nordic Semiconductor's nRF52 boards. Starting with a very little amount of theory, you’ll develop code right from the beginning. After you’ve completed this book, you’ll know enough to create your own BLE applications.

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Dieses Bundle enthält alles, was Sie brauchen, um direkt mit dem XIAO ESP32-C3 Development Board loszulegen. Lernen Sie die Grundlagen des ESP32-C3 kennen und entwickeln Sie praktische Projekte mit Wi-Fi, Bluetooth, Sensoren, Displays, PWM, Deep Sleep und vielem mehr. Buch: Build Smart Projects with the XIAO ESP32-C3 Board Das XIAO ESP32-C3 Board kombiniert den ultrakompakten Formfaktor der XIAO-Serie mit den umfangreichen Funktionen des ESP32-C3-Chips, einschließlich integriertem Wi-Fi und Bluetooth 5.0. Dieses Buch ist ein umfassender, praxisorientierter Leitfaden, mit dem Sie das Potenzial dieses leistungsstarken und dennoch preisgünstigen Development Boards voll ausschöpfen können. Der Autor führt die Leser von den Grundlagen bis hin zu fortgeschrittenen Projekten. Angefangen beim Blinken und Dimmen von LEDs geht es weiter mit ADC und PWM für die präzise Anbindung von Sensoren und PWM-gesteuerte Lichteffekte, bevor praktische Anwendungen aus der realen Welt umgesetzt werden, darunter: Eine Wi-Fi-Wetterstation mit OLED-Display und aktuellen Online-Wetterdaten Ein Ultraschall-Einparkassistent mit akustischer Rückmeldung Eine Kühlschrank-Messsonde mit Klimasensoren und Deep Sleep für jahrelangen Batteriebetrieb Ein Retro-Pong-Spiel, das berührungslos per Sensor gesteuert wird Eine mikrofonbasierte Party-App, die auf Klatschen reagiert Und vieles mehr: Lichtsteuerung, Reaktionszeitmessung, Netzfrequenzanalyse, Bodenfeuchtemessung, LED-Ambientebeleuchtung und 7-Segment-Anzeigen Seeed Studio XIAO ESP32C3 Das Seeed Studio XIAO ESP32C3 ist mit einem hochintegrierten ESP32-C3-Chip ausgestattet, der auf einem 32-Bit-RISC-V-Prozessor mit vierstufiger Pipeline basiert und mit bis zu 160 MHz arbeitet. Das Board verfügt über ein hochintegriertes ESP32-C3-SoC. Der Chip ist mit einem vollständigen 2,4-GHz-Wi-Fi-Subsystem ausgestattet und unterstützt damit den Station-Modus, SoftAP-Modus, SoftAP-&-Station-Modus sowie den Promiscuous-Modus für unterschiedliche Wi-Fi-Anwendungen. Gleichzeitig arbeitet er äußerst energieeffizient und unterstützt Bluetooth 5 sowie Bluetooth Mesh. Mit 400 KB SRAM und 4 MB Flash bietet der Chip ausreichend Speicherplatz für Programme und eröffnet zahlreiche Möglichkeiten für IoT-Steuerungsanwendungen. Anwendungen Internet der Dinge (IoT) Wearables Gesundheitsüberwachung Bildung Energiesparende Netzwerke Schnelle Prototypenentwicklung Technische Daten Processor ESP32-C3 SoC RISC-V single-core 32-bit chip processor with a four-stage pipeline that operates at up to 160 MHz Wireless Complete 2.4GHz Wi-Fi subsystem Bluetooth Low Energy 5.0/ Bluetooth Mesh On-chip Memory 400 KB SRAM & 4 MB Flash Interface 1x UART, 1x I²C, 1x SPI, 11x GPIO (PWM), 4x ADC 1x Reset button, 1x Boot button Power (Typ.) Max 3.3 V Output Current: 500 mA Test Condition: BAT Pin Input @ 3.8 V Source Capability: 3 A Charging current: 380 mA(Fast) / 40 mA(Trickle) Input voltage (VIN): 5 VInput voltage (BAT): 3.7 V Deep Sleep Power Consumption Deep Sleep Mode: 44 μA Wi-Fi Enabled Power Consumption Active Mode: 75 mA Modem-sleep Mode: 25 mA Light-sleep Mode: 4 mA BLE Enabled Power Consumption Modem-sleep Mode: 27 mA Light-sleep Mode: 10 mA Dimensions 21 x 17.8 mm Lieferumfang 1x Seeed Studio XIAO ESP32C3 1x Antenne 2x 7-Pin-Header Downloads Wiki Datasheet Dieses Bundle enthält: Buch: Build Smart Projects with the XIAO ESP32-C3 Board (Einzelpreis: 35 €) Board: Seeed Studio XIAO ESP32C3 (Einzelpreis: 10 €)

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Diese Ausgabe steht allen GOLD- und GREEN-Mitgliedern auf der ElektorMagazine-Website zum Download bereit! Sind Sie noch kein Mitglied? Hier klicken! electronica Fast Forward Start- & Scale-Up Awards Die Vorbereitungen laufen auf Hochtouren! Bluetooth Low Energy mit dem ESP32-C3 und ESP32 Es muss nicht immer WLAN sein! Bluetooth-LE-Sniffer Mit dem Makerdiary nRF52840 MDK USB-Dongle Magischer RGB-LED-Würfel Hardware-Design rund um einen RP2040 Automatischer Ein-/Ausschalter für Lötpastenkompressor Elektor - live und in Farbe Livestreams, Webinare und Kurse für Ingenieure und Maker Fahrrad elektrifizieren E-Bike-Nachrüstkit in der Praxis Aller Anfang ... Muss nicht schwer sein: Multiplikation von Spannungen Aus dem Leben gegriffen Nebenbeschäftigungen Teensy 4.0 – warum ist das Board so schnell? Oder: Geschwindigkeit ist keine Hexerei! Simulation von Audio-Leistungsverstärkern mit TINA Der „Try-Before-You-Build“-Ansatz LoRaWAN-Knoten im IoT Ein Beispiel-Kapitel: Die LoRaWAN-Module Dragino LHT65, LDS01 und LDS02 Projekt 2.0 Korrekturen, Updates und Leserbriefe 5G für mich allein Vollständige Kontrolle über 5G-Implementierungen in privaten Mobilfunknetzen Infografik 7-8/2022 Wie lernt mein Gerät zu funken? Applikationen mit WiFi-Schnittstellen ausrüsten Rheinturmuhr – Wecker de luxe Audio-Spektrum-Analysator mit Dekatrons Eine neue Art, alte Röhren zu verwenden Senden von Daten an Telegram Ein ESP32 und ein paar Bauteile besorgt den Job32 and a Few Parts Fliege-Bandsperre für Audio-Messungen Besseres Messen durch Notch-Filterung CO2-Messgerät auseinandergenommen Ist das Gerät für Ihre Projekte hackbar? Spielereien mit PUTs Analoge Entwürfe mit dem programmierbaren Unijunction-Transistor Ein runder Touchscreen für den Raspberry Pi HyperPixel 2.1 Round von Pimoroni Fernwirken und die Erkennung von Verbindungsverlusten mit Hilfe von nRF24L01+ Modulen Digitaler UKW-Empfänger Mit Arduino Nano und TEA5767 OLED-Display - aus SPI mach I²C Zutritt für Unbefugte verboten! Ein Hobby geht nicht in die Rente! Ein Jahrzehnt der Ethik in der Elektronik Tessel Renzenbrink sinniert über die digitale Gesellschaft Hexadoku Sudoku für Elektroniker

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Build Smart Applications with Raspberry Pi, Arduino, and ESP32 Discover how easy and exciting mobile app development can be with MIT App Inventor. This hands-on guide takes you from basic concepts to building real-world mobile applications using a simple visual programming approach—no prior coding experience required. You will create IoT and AI-powered apps for Android devices and explore how App Inventor can also be used with iPhones and iPads. Connect your applications to platforms such as Arduino UNO R4 WiFi, ESP32, Raspberry Pi Pico (2)W and Raspberry Pi 5, enabling you to build smart, connected systems. Inside the book, you will learn how to: Build interactive apps using buttons, images, sound, and multimedia Create text-to-speech and speech-recognition applications Develop camera-based and location-aware (GPS) apps Design useful tools such as calculators and educational apps Work with smartphone sensors like accelerometers and light sensors Build AI-powered applications, including voice assistants and image-generation features Send and receive messages, and create communication-based apps Connect mobile apps to hardware using Wi-Fi and Bluetooth Control real devices such as LEDs, motors, and sensors Designed for beginners, students, and hobbyists, this book focuses on learning by doing. By the end, you will have the skills and confidence to create your own innovative applications that interact with both the digital and physical worlds. Start building and turning your ideas into reality.

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Hochleistungsfähiges LoRa-Kommunikationsgerät Das Elecrow ThinkNode M5 ist ein kompaktes, tragbares LoRa-Kommunikationsgerät, das für netzunabhängige Nachrichtenübermittlung, Standortfreigabe und den Außeneinsatz konzipiert wurde. Ausgestattet mit einem ESP32-S3-Prozessor und einem SX1262-LoRa-Chip, wird es mit vorinstallierter Meshtastic-Firmware geliefert und lässt sich bequem per Bluetooth über die offizielle Meshtastic-App konfigurieren. Das integrierte Multi-GNSS-Modul unterstützt GPS, GLONASS, BeiDou und QZSS für eine zuverlässige Positionsbestimmung und Standortfreigabe. Nachrichten und Geräteinformationen werden auf dem energieeffizienten 1,54-Zoll-E-Paper-Display angezeigt, während der integrierte 1.200-mAh-Akku einen langen mobilen Betrieb ermöglicht. Dank der integrierten LoRa-Antenne, des kompakten Gehäuses, der Echtzeituhr (RTC) und der Unterstützung für Meshtastic- sowie MeshCore-Firmware ist das ThinkNode M5 eine praktische Kommunikationslösung für Wandern, Camping, abgelegene Gebiete und Notfallsituationen, in denen keine herkömmlichen Mobilfunknetze verfügbar sind. Features LoRa-Kommunikation Multi-GNSS-Positionsbestimmung 1.200-mAh-Akku 1,54" E-Paper-Display Integrierte RTC Kompatibel mit MeshCore Kompatibel mit Meshtastic Technische Daten Hauptprozessor (ESP32-S3) CPU/SoC Xtensa 32-Bit-LX7-Dual-Core-Prozessor, getaktet mit bis zu 240 MHz Systemspeicher 512 KB SRAM, 8 MB PSRAM Speicher 4 MB Flash, 384 KB ROM Firmware Meshtastic-Firmware ist voll kompatibel; Signalübertragung im LoRa-Modus EPD (Electronic Paper Display) Displaygröße 1,54-Zoll-EPD (monochromer E-Ink-Bildschirm) Displaymaterial E-Ink (Electronic Ink) Auflösung 200 x 200 Treiber-Chip SSD1681 (über SPI- oder I²C-Schnittstelle) Zeit für vollständige Aktualisierung 2 s Drahtlose Kommunikation Bluetooth Bluetooth Low Energy und Bluetooth 5.0 (Konfiguration per Smartphone) LoRa SX1262 LoRa-Modul, EU 868 MHz (externe Antenne) Hardware Schnittstellen USB-C, RP-SMA Funktionen GPS-Ortung (GPS, GLONASS, BeiDou, QZSS), EPD-Display, RTC, USB 2.0, PMU-Energiemanagement (integrierter 1200-mAh-Lithium-Akku), Summer usw. Tasten Drehschalter, Funktionstaste, Blättertaste, GPS-Schalter, Reset-Taste LED-Anzeige Stromversorgung, GPS/LoRa-Anzeige Sonstiges Spannungsversorgung 5 V/1 A; unterstützt Stromversorgung über USB oder Lithium-Akku Stromverbrauch Maximaler Betriebsstrom ca. 340 mA (CPU + LoRa-Modul); Stromverbrauch im Energiesparmodus ca. 34 µA Betriebstemperatur -10 bis 50°C Lagertemperatur -20 bis 60°C Relative Luftfeuchtigkeit 10–95% bei 40°C (nicht kondensierend) Gehäuse ABS-Kunststoff Abmessungen 82 x 51,6 x 26,3 mm Gewicht 81 g Lieferumfang 1x Elecrow ThinkNode M5 1x LoRa-Antenne 1x USB-C Kabel 1x Manual Downloads Manual

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. MultiRF Dev BoardA Platform for Evaluating Short- and Long-Range Wireless Protocols Elektor at 65Disrupting Electronics Since 1961 Wi-Fi-Based Person Detection on an ESP32When Your Router Becomes a Motion Sensor Wireless ScalesFour Small Scales = One Big Scale Walter, the Compact IoT ModuleESP32-S3 SoC, LTE-M/NB-IoT 5G Modem, and GNSS Receiver 3- and 4-Wire RTD Sensors ConditioningWith Full-Scale Adjustment and Cable Compensation 3-in-1 2-Channel Oscilloscope/Generator/MultimeterA Review of The Fnirsi 2D15P electronica Fast Forward 2026 Invites Startups and Industry Partners EcologgingA Modular Environmental IoT Station for Field Research Wireless Connectivity in Medical ApplicationsAlways on the Pulse with Bluetooth LE AudiotronicsHum Reduction Increasing Agricultural Efficiency with AI Modeling and SensorsBoosting Agricultural Productivity OPC UA — An OverviewPlatform-Independent Data Exchange Redox Meter Instrumentation Amplifier for Physics and Engineering Experiments Active Differential Audio FiltersFor Professional Crossovers and More Elektor Community Perspectives on IoT & Sensors Telegram-Controlled Water Heater Interface ModuleA Solution Based on an ESP32 and Arduino Software 2026: An AI OdysseyWhatever Happened to Fuzzy Logic? Err-lectronics Alarm Signal Injector Plus PowerTools for Finding Broken Wires

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Build Smart Applications with Raspberry Pi, Arduino, and ESP32 Discover how easy and exciting mobile app development can be with MIT App Inventor. This hands-on guide takes you from basic concepts to building real-world mobile applications using a simple visual programming approach—no prior coding experience required. You will create IoT and AI-powered apps for Android devices and explore how App Inventor can also be used with iPhones and iPads. Connect your applications to platforms such as Arduino UNO R4 WiFi, ESP32, Raspberry Pi Pico (2)W and Raspberry Pi 5, enabling you to build smart, connected systems. Inside the book, you will learn how to: Build interactive apps using buttons, images, sound, and multimedia Create text-to-speech and speech-recognition applications Develop camera-based and location-aware (GPS) apps Design useful tools such as calculators and educational apps Work with smartphone sensors like accelerometers and light sensors Build AI-powered applications, including voice assistants and image-generation features Send and receive messages, and create communication-based apps Connect mobile apps to hardware using Wi-Fi and Bluetooth Control real devices such as LEDs, motors, and sensors Designed for beginners, students, and hobbyists, this book focuses on learning by doing. By the end, you will have the skills and confidence to create your own innovative applications that interact with both the digital and physical worlds. Start building and turning your ideas into reality.

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The XIAO ESP32-C3 board combines the ultra-compact form factor of the XIAO series with the full capabilities of the ESP32-C3 chip, including integrated Wi-Fi and Bluetooth 5.0. This book is a comprehensive, hands-on guide to getting the most out of this powerful yet affordable development board. The author takes readers from the fundamentals to advanced projects. Starting with LED blinking and dimming, the book progresses to ADC and PWM for precise sensor interfacing and PWM-controlled lighting effects before moving on to building practical, real-world applications, including: A Wi-Fi weather station with an OLED display and real-time online weather data An ultrasonic parking assistant with audible feedback A refrigerator monitoring probe with climate sensing and Deep Sleep for years of battery operation A retro Pong game controlled by a touch-free sensor A microphone-based party app that responds to claps And much more: lighting control, reaction-time measurement, mains frequency analysis, soil moisture sensing, ambient LED lighting, and 7-segment displays

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Program, build, and master over 50 projects with MicroPython and the RP2040 microprocessor The Raspberry Pi Pico is a high-performance microcontroller module designed especially for physical computing. Microcontrollers differ from single-board computers, like the Raspberry Pi 4, in not having an operating system. The Raspberry Pi Pico can be programmed to run a single task very efficiently within real-time control and monitoring applications requiring speed. The ‘Pico’ as we call it, is based on the fast, efficient, and low-cost dual-core ARM Cortex-M0+ RP2040 microcontroller chip running at up to 133 MHz and sporting 264 KB of SRAM, and 2 MB of Flash memory. Besides its large memory, the Pico has even more attractive features including a vast number of GPIO pins, and popular interface modules like ADC, SPI, I²C, UART, and PWM. To cap it all, the chip offers fast and accurate timing modules, a hardware debug interface, and an internal temperature sensor. The Raspberry Pi Pico is easily programmed using popular high-level languages such as MicroPython and or C/C++. This book is an introduction to using the Raspberry Pi Pico microcontroller in conjunction with the MicroPython programming language. The Thonny development environment (IDE) is used in all the projects described. There are over 50 working and tested projects in the book, covering the following topics: Installing the MicroPython on Raspberry Pi Pico using a Raspberry Pi or a PC Timer interrupts and external interrupts Analogue-to-digital converter (ADC) projects Using the internal temperature sensor and external temperature sensor chips Datalogging projects PWM, UART, I²C, and SPI projects Using Wi-Fi and apps to communicate with smartphones Using Bluetooth and apps to communicate with smartphones Digital-to-analogue converter (DAC) projects All projects given in the book have been fully tested and are working. Only basic programming and electronics experience is required to follow the projects. Brief descriptions, block diagrams, detailed circuit diagrams, and full MicroPython program listings are given for all projects described. Readers can find the program listings on the Elektor web page created to support the book.

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