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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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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. electronica fast forward 2022 Start- & Scale-Up AwardsPreparations Speeding Up! Bluetooth Low Energy with ESP32-C3 and ESP32You Don’t Always Need to Choose Wi-Fi! Bluetooth Low Energy SnifferHacking a makerdiary nRF52840 MDK USB Dongle Magic RGB LED CubeHardware Design Around an RP2040 Auto On/Off for Solder Paste Compressor Elektor Video ContentLivestreams, Webinars, and Courses for Engineers and Pro Makers Bicycle ElectrificationHands-On with an E-Bike Retrofit Kit Starting Out in ElectronicsMultiplying Voltages From Life’s ExperienceSidelines Teensy 4.0Why Is This Board So Fast? Audio Power Amplifier Simulation with TINAThe Try-Before-You-Build Approach Develop and Operate Your LoRaWAN IoT NodesSample Chapter: Dragino LHT65, LDS01, and LDS02 LoRaWAN Modules Err-lectronicsCorrections, Updates and Readers’ Letters 5G Just for MeGaining Complete Control of 5G Deployments with Private Cellular Networks Infographics 7-8/2022 How Does My Device Learn to Transmit?Applications with Wi-Fi Interfaces Smartphones are the Heart of the IoT Audio Spectrum Analyzer with DekatronsA New Way to Use Vintage Tubes Sending Data to TelegramGet It Done with an ESP32 and a Few Parts A Fliege Notch Filter for Audio MeasurementsMake Better Measurements with a Notch Filter CO2 Meter TeardownIs It Hackable for Your Projects? PUT-ting It All TogetherThe Programmable Unijunction Transistor Explained Round Touchscreen for Raspberry PiHyperPixel 2.1 Round from Pimoroni Remote Sensing with Connection Loss DetectionUsing nRF24L01+ Modules Digital FM Receiver with Arduino and TEA5767Stayed Tuned with an Arduino Nano Changing an OLED Interface from SPI to I²C HomeLab ToursA Hobby Does Not Retire A Decade of Ethics in ElectronicsTessel Renzenbrink Reflects on the Digital Society and More HexadokuThe Original Elektorized Sudoku

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electronica Fast Forward Start- & Scale-Up AwardsLes préparatifs s?accélèrent?! Bluetooth Low Energy avec ESP32-C3 et ESP32Vous n?avez pas toujours besoin de choisir le wifi?! Renifleur BLEReconfiguration du dongle USB nRF52840 MDK de makerdiary Cube magique de LED RGBcircuit avec un RP2040 Marche/arrêt automatique pour le compresseur de pâte à souder Contenu vidéo d?ElektorLivestreams, webinaires et cours pour les ingénieurs et les fabricants professionnels Électrification d?un véloUtilisation d?un kit de modification de vélo électrique Démarer en électroniqueMultiplication de tensions Sur le vifTransmutations Teensy 4.0 ? comment cette carte peut-elle être aussi rapide ?Ou: La vitesse, ce n'est pas sorcier ! Simulation d?amplificateur de puissance audio avec TINA«?simuler avant de construire?» Développer et utiliser vos n?uds LoRaWAN pour l'Internet des Objets (IdO)Exemple de chapitre : Modules LoRaWAN Dragino LHT65, LDS01 et LDS02 Projet 2.0Corrections, mises à jour et courriers des lecteurs 5G pour mon propre exploitMaîtrise totale du déploiement de la 5G avec les réseaux cellulaires privés Infographics Les meilleurs conseils pour développer une interface WiFiComment mon appareil apprend-il à transmettre ? Horloge Tour du Rhin Mod 2 Analyseur de spectre audio avec dekatronsUne nouvelle façon d'utiliser les tubes rétro Envoi de données à TelegramAvec un ESP32 et quelques composants Filtre coupe-bande de Fliege pour les mesures audioFaites de meilleures mesures avec un filtre coupe-bande Démontage d?un CO2-mètrePeut-on le bidouiller pour vos projets?? Tout mis ensembleLe transistor unijonction programmable expliqué Écran tactile rond pour Raspberry PiL?HyperPixel 2.1 Round de Pimoroni Télémesure avec détection des pertes de connexionGrâce aux modules nRF24L01+ Récepteur FM numérique avec Arduino et TEA5767Restez à l?écoute avec un Arduino Nano Convertir une interface OLED de SPI vers I²C HomeLab ToursUn passe-temps ne prend pas sa retraite Une décennie d?éthique en électroniqueLe regard de Tessel Renzenbrink sur la société numérique. HexadokuThe Original Elektorized Sudoku

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This bundle gives you everything you need to get started right away with the XIAO ESP32-C3 development board. Learn the fundamentals of the ESP32-C3 and build practical projects with Wi-Fi, Bluetooth, sensors, displays, PWM, Deep Sleep, and much more. Book: Build Smart Projects with the XIAO ESP32-C3 Board 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 Seeed Studio XIAO ESP32C3 Seeed Studio XIAO ESP32C3 has equipped a highly-integrated ESP32-C3 chip, built around a 32-bit RISC-V chip processor with a four-stage pipeline that operates at up to 160 MHz. The board equips highly-integrated ESP32-C3 SoC. The chip has been installed with a complete 2.4 GHz Wi-Fi subsystem which means it supports Station mode, SoftAP mode, SoftAP & Station mode, and promiscuous mode for multiple Wi-Fi applications. It works under an ultra-low power state, also supporting features of Bluetooth 5 and Bluetooth mesh. There are 400 KB SRAM & 4 MB Flash on the chip, allowing for more programming space, and bringing more possibilities to the IoT control scenarios. Applications Internet of Things Wearable devices Health monitoring Education Low-Power networking Rapid prototyping Specifications 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 Included 1x Seeed Studio XIAO ESP32C3 1x Antenna 2x 7-pin header Downloads Wiki Datasheet This bundle contains: Book: Build Smart Projects with the XIAO ESP32-C3 Board (normal price: €35) Board: Seeed Studio XIAO ESP32C3 (normal price: €10)

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electronica fast forward Start- & Scale-Up Awardsde voorbereidingen gaan steeds sneller! Bluetooth Low Energy met ESP32-C3 en ESP32het hoeft niet altijd WiFi te zijn! Bluetooth LE-snifferhack een makerdiary nRF52840 MDK USB-dongle Magische RGB LED-kubushardware ontwerpen rond een RP2040 Auto-aan/uit voor soldeerpasta-compressor Elektor video-productieslivestreams, webinars en cursussen voor engineers en pro-makers Elektrificeer je fietsmet een e-bike ombouwset Alle begin......vermenigvuldigt spanningen Uit het leven gegrepennevenactiviteiten Teensy 4.0 – waarom is dat board zo snel?snelheid is geen hekserij! Simulatie van een audio-eindversterker met TINAeerst uitproberen, dan bouwen Ontwikkel en beheer je eigen LoRaWAN IoT-nodesvoorbeeldhoofdstuk: Dragino LHT65, LDS01 en LDS02 LoRaWAN modules Project 2.0correcties, updates en brieven van lezers 5G – alleen voor mijvolledige controle over 5G-implementaties met een eigen cellulair netwerk Elektor Infographics Tips voor het ontwikkelen van een WiFi-interfacetoepassingen uitrusten met WiFi-interfaces Rijntoren-klok Mk 2 Audio-spectrumanalyzer met dekatronsnieuw leven voor vintage-buisjes Data naar Telegram sturenmet een ESP32 en een paar onderdelen Een Fliege-notchfilter voor audiometingenmeet beter met een notchfilter Veranderende industriële communicatieSingle Pair Ethernet – meer dan zo maar een nieuwe connector Elektronische mannetjes-PUT-terzo werkt de programmeerbare unijunctie-transistor Rond touchscreen voor Raspberry PiHyperPixel 2.1 Round van Pimoroni Remote sensing met detectie van verbindingsverliesmet nRF24L01+ modules Digitale FM-ontvanger met Arduino en TEA5767stem af met een Arduino Nano OLED-interface ombouwen van SPI naar I²C Oost West Lab Besteen hobby gaat niet met pensioen... Tien jaar ethiek in elektronicaTessel Renzenbrink over de digitale samenleving en meer HexadokuThe Original Elektorized Sudok

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Diese Ausgabe steht allen GOLD- und GREEN-Mitgliedern auf der ElektorMagazine-Website zum Download bereit! Sie sind noch kein Mitglied? Hier klicken! electronica Fast Forward Start- & Scale-Up AwardsDie Vorbereitungen laufen auf Hochtouren! Bluetooth Low Energy mit dem ESP32-C3 und ESP32Es muss nicht immer WLAN sein! Bluetooth-LE-SnifferMit dem makerdiary nRF52840 MDK USB-Dongle Magischer RGB-LED-WürfelHardware-Design rund um einen RP2040 Automatischer Ein/Ausschalter für Lötpastenkompressor Elektor - live und in FarbeLivestreams, Webinare und Kurse für Ingenieure und Maker Fahrrad elektrifizierenE-Bike-Nachrüstkit in der Praxis Aller Anfang ...Muss nicht schwer sein: Multiplikation von Spannungen Aus dem Leben gegriffenNebenbeschäftigungen Teensy 4.0 - warum ist das Board so schnell?Oder: Geschwindigkeit ist keine Hexerei! Simulation von Audio-Leistungsverstärkern mit TINADer „Try-Before-You-Build“-Ansatz LoRaWAN-Knoten im IoTEin Beispiel-Kapitel: Die LoRaWAN-Module Dragino LHT65, LDS01 und LDS02 Projekt 2.0Korrekturen, Updates und Leserbriefe 5G für mich alleinVollständige Kontrolle über 5G-Implementierungen in privaten Mobilfunknetzen Infographics 7-8/2022 Wie lernt mein Gerät funken?Applikationen mit WiFi-Schnittstellen ausrüsten Rheinturmuhr – Wecker de luxe Audio-Spektrum-Analysator mit DekatronsEine neue Art, alte Röhren zu verwenden Senden von Daten an TelegramEin ESP32 und ein paar Bauteile erledigen den Job32 and a Few Parts Fliege-Bandsperre für Audio-MessungenBesseres Messen durch Notch-Filterung CO2-Messgerät auseinandergenommenIst das Gerät hackbar für Ihre Projekte? Spielereien mit PUTsAnaloge Entwürfe mit dem Programmierbaren Unijunction-Transistor Ein runder Touchscreen für den Raspberry PiHyperPixel 2.1 Round von Pimoroni Fernwirken und die Erkennung von Verbindungsverlustenmit Hilfe von nRF24L01+ Modulen Digitaler UKW-EmpfängerMit Arduino Nano und TEA5767 OLED-Display - aus SPI mach I²C Zutritt für Unbefugte verboten!Ein Hobby geht nicht in Rente! Ein Jahrzehnt der Ethik in der ElektronikTessel Renzenbrink sinniert über die digitale Gesellschaft HexadokuSudoku 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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High-Performance LoRa Communication Device The Elecrow ThinkNode M5 is a compact, portable LoRa communication device designed for off-grid messaging, location sharing, and outdoor use. Powered by an ESP32-S3 processor and an SX1262 LoRa chip, it comes pre-installed with Meshtastic firmware and can be configured conveniently via Bluetooth using the official Meshtastic app. The integrated multi-GNSS module supports GPS, GLONASS, BeiDou, and QZSS for reliable positioning and location sharing. Messages and device information are displayed on the energy-efficient 1.54-inch e-paper screen, while the built-in 1,200 mAh rechargeable battery enables extended mobile operation. With its integrated LoRa antenna, compact housing, RTC, and support for both Meshtastic and MeshCore firmware, the ThinkNode M5 is a practical communication solution for hiking, camping, remote locations, and emergency situations where conventional mobile networks are unavailable. Features LoRa communication Multi-GNSS positioning 1,200 mAh rechargeable battery 1.54-inch e-paper display Built-in RTC Compatible with MeshCore Compatible with Meshtastic Specifications Main Processor (ESP32-S3) CPU/SoC Xtensa 32-bit LX7 dual-core processor, clocked at up to 240 MHz System Memory 512 KB SRAM, 8 MB PSRAM Storage 4 MB Flash, 384 KB ROM Firmware Meshtastic firmware is fully compatible, and the signal is transmitted in LoRa mode EPD (Electronic Paper Display) Display Size 1.54 inch EPD (monochrome Ink screen) Display Materials E-lnk (Electronic Ink） Resolution 200 x 200 Driver Chip SSD1681 (via SPI or I²C interface) Global Fresh Time 2s Wireless Communication Bluetooth Bluetooth Low Energy and Bluetooth 5.0 (phone configuration) LoRa SX1262 LoRa Module, EU 868 MHz（external antenna） Hardware Interfaces USB-C, RP-SMA Function GPS Location (GPS, GLONASS, BeiDou, QZSS), EPD Display, RTC, USB 2.0, PMU power management (built-in 1200 mAh lithium battery), buzzer, etc. Button Knob Switch, Function Button, Page Turn Button, GPS Switch, Reset Button LED Indicator Power supply, GPS/LoRa indication Others Power Input 5 V/1 A, supports USB or lithium battery power supply Power consumption The maximum working current is about 340 mA (CPU + LoRa module), and the low power consumption is about 34 uA Operating Temperature -10~50°C Storage Temperature -20~60°C Relative humidity 10-95%, @ 40°C (non-condensing) Enclosure ABS Plastic Dimensions 82 x 51.6 x 26.3 mm Weight 81 g Included 1x Elecrow ThinkNode M5 1x LoRa antenna 1x USB-C cable 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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