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IMAGE PROCESSING WITH THE NVIDIA JETSON NANO (PART 2)Image Recognition Using Edge Impulse ELEKTOR JUMPSTARTER NEWSUpcoming Campaigns AN OPEN-SOURCE GPS TRACKING PLATFORMTraccar Maps Vehicle Tracking Without the Need for a Third-Party Cloud Server JOY-IT LCR-T7 MULTI-FUNCTION TESTERTesting Passives, Discrete Semiconductors and IR Remote Controls NOISE SYNTHESIZERFrom Noise to Music with the PRBSynth1 STARTING OUT IN ELECTRONICSEasier than Imagined! ... Continuing with the Coil UNDERSTANDING THE NEURONS IN NEURAL NETWORKS (PART 2)Logical Neurons ISSUES WITH SECURITY? FIGHT FIRE WITH FIRE!Flashbulb-Protected Analogue Memory Add-on For the Tamper-Evident Box LCR METER POSTER BLUETOOTH BEACONS IN PRACTICEBeacons Light the Way Ahead C PROGRAMMING ON RASPBERRY PICommunicating over Wi-Fi (Sample Chapter) EMC PRE-COMPLIANCE TEST FOR YOUR DC-POWERED PROJECT (PART 2)The Hardware and How to Use It HANDS ON THE PARALLAX PROPELLER 2 (PART 5)Inside the Smart Pin MODBUS OVER WLAN (PART 1)Hardware and Programming HOMELAB TOURSWhere the Junior Computer Is Brought to Life Again BUILD YOUR OWN HIGH-PRECISION CALIBRATOR-10 V to +10 V, 0 to 40 mA, 0.001% ARDUINO NANO RP2040 CONNECTRaspberry Pi RP2040 + Wi-Fi + Bluetooth THE PHYSICAL BODY OF ARTIFICIAL INTELLIGENCE ERR-LECTRONICSCorrections, Updates and Readers’ Letters CREATE GUIS WITH PYTHONIntroducing guizero CO2 METER KIT FOR THE CLASSROOMAn ESP8266-Based Device from the University of Applied Sciences Aachen NOSTALGIC MK484 MW/LW RADIO...Always Fun to Build! ELEKTOR @ 60Let There Be Light! HEXADOKUThe Original Elektorized Sudoku

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Le téléchargement intégral de ce numéro est disponible pour nos membres GOLD et GREEN sur le site Elektor Magazine ! Pas encore membre ? Cliquez ici. l'ESP-BLASTUn mini drone-fusée ESP32 qui vole à plus de 100 km/h atelier sans fil (1)Modules radio déverrouillés : émetteur-récepteur sub-GHz CC1101 433 MHz émetteur AMAvec le générateur d'ondes carrées/sinusoïdales sur Raspberry Pi Pico STM32Cube Innovation ChallengeParticipez avec votre meilleur projet STM32C5 CoffeeCallerComment une pause café a inspiré un PCB sur mesure audiotroniquesDistorsion harmonique totale Elektor à 65 ansProjets de septembre et octobre au fil des ans Bluetooth Channel Sounding pour le suivi des équipementsMesure de distance avec une précision centimétrique pour l’IoT de nouvelle génération 2026 : une Odyssée de l'IAL'informatique quantique n'est pas le prochain GPU protéger le cloud exige de sécuriser la périphérie premières expériences avec le HackRF ProTests pratiques avec le nouveau matériel SDR mise à niveau du modem de GPRS/2G vers LTE/4GExemple d'un panneau de contrôle d'alarme sans fil antenne en bouclePartie 1 : Une antenne ondes courtes à directivité réglable, à réaliser soi-même convertisseur de radio Internet en AMUn ESP32-S3 comme émetteur projet 2.0 mioty : aperçu généralL'approche de Fraunhofer pour les LPWAN sagesse d'atelierConseils pratiques d'experts Walter, le module IoT compactPartie 2 : Accéder aux services météorologiques et aux services de données

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This book is about the Raspberry Pi 3 computer and its use in various control and monitoring applications. The book explains in simple terms and with tested and working example projects, how to configure the Raspberry Pi 3 computer, how to install and use the Linux operating system, and how to write hardware based applications programs using the Python programming language. The nice feature of this book is that it covers many Raspberry Pi 3 based hardware projects using the latest hardware modules such as the Sense HAT, Swiss Pi, MotoPi, Camera module, and many other state of the art analog and digital sensors. An important feature of the Raspberry Pi 3 is that it contains on-board Bluetooth and Wi-Fi modules. Example projects are given in the book on using the Wi-Fi and the Bluetooth modules to show how real-data can be sent to the Cloud using the Wi-Fi module, and also how to communicate with an Android based mobile phone using the Bluetooth module. The book is ideal for self-study, and is intended for electronic/electrical engineering students, practising engineers, research students, and for hobbyists. It is recommended that the book should be followed in the given Chapter order. Over 30 projects are given in the book. All the projects in the book are based on the Python programming language and they have been fully tested. Full program listings of every project are given in the book with comments and full descriptions. Experienced programmers should find it easy to modify and update the programs to suit their needs. The following sub-headings are given for each project to make it as easy as possible for the readers to follow the projects: Project title Description Aim of the project Raspberry Pi type Block diagram Circuit diagram Program listing

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This book is about DC electric motors and their use in Arduino and Raspberry Pi Zero W based projects. The book includes many tested and working projects where each project has the following sub-headings: Title of the project Description of the project Block diagram Circuit diagram Project assembly Complete program listing of the project Full description of the program The projects in the book cover the standard DC motors, stepper motors, servo motors, and mobile robots. The book is aimed at students, hobbyists, and anyone else interested in developing microcontroller based projects using the Arduino Uno or the Raspberry Pi Zero W. One of the nice features of this book is that it gives complete projects for remote control of a mobile robot from a mobile phone, using the Arduino Uno as well as the Raspberry Pi Zero W development boards. These projects are developed using Wi-Fi as well as the Bluetooth connectivity with the mobile phone. Readers should be able to move a robot forward, reverse, turn left, or turn right by sending simple commands from a mobile phone. Full program listings of all the projects as well as the detailed program descriptions are given in the book. Users should be able to use the projects as they are presented, or modify them to suit to their own needs.

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Dit boek gaat over de Raspberry Pi, en over het programmeren in C. De programmeertaal C en het besturingssysteem Linux (Raspbian) passen uitstekend bij elkaar. Alles wat we nodig hebben om in C te programmeren wordt meegeleverd met het besturingssysteem van de Raspberry Pi. In dit boek leert u hoe C gebruikt wordt met de Raspberry Pi, en krijgt u een overzicht van de taal. WiringPi is een softwarebibliotheek voor de Raspberry Pi waarmee C hardware-uitbreidingen kan benaderen. Die bibliotheek wordt gebruikt om sensoren uit te lezen en om extra hardware aan te sturen. U gaat experimenteren met LED’s en schakelaars, met motoren, met geluid en met sensoren voor temperatuur, luchtdruk, en luchtvochtigheid. Met een Linux-systeem kunt u een webserver maken, inclusief interactieve websites met PHP en WiringPi. Daarom is ook een beknopt overzicht van HTML en PHP in het boek opgenomen. In de voorbeelden worden sensoren via het web uitgelezen en worden apparaten bestuurd. In het laatste voorbeeld wordt een temperatuurlogger gemaakt. Die meet elk kwartier de temperatuur. Een tabel met de meetwaarden kan via het web worden uitgelezen. Alle voorbeeldprogramma’s kunnen worden gedownload van de website van Elektor.

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Pfiffige Projekte zum Messen, Steuern und Regeln Der Raspberry Pi dominiert seit vielen Jahren die Maker-Szene. Frei verfügbare I/O-Pins machten ihn zu einem der beliebtesten Prozessorboards aller Zeiten. Allerdings verfügt der klassische Raspberry Pi über keinerlei Analogeingänge. Eine direkte Messung analoger Werte ist damit nicht möglich. So können weder Photodioden noch NTCs oder Hallsensoren etc. unmittelbar ausgelesen werden. Zudem sind die Pins direkt, d. h. ohne Treiber oder Schutzschaltung, mit den freiliegenden Kontakten verbunden. Dadurch kann der zentrale Controller und damit der gesamte Raspberry Pi schnell zerstört werden. Mit dem Pico können diese Probleme elegant gelöst werden. Er kann als sogenanntes „Frontend“ problemlos vielfältige Messaufgaben übernehmen. Zudem ist der Pico deutlich preisgünstiger als ein klassischer Raspberry Pi 4. Falls eine Fehlbeschaltung zur Zerstörung des Pico führt, ist dies vor allem für nicht-professionelle Anwender relativ leicht zu verkraften. Der klassische Raspberry Pi und der Pico werden so zum idealen Duo. Das Buch führt entsprechend in das weite und hochaktuelle Gebiet der modernen Controllertechnik anhand der beiden Boards „Raspberry Pi 4“ und „Raspberry Pi Pico“ ein. Neben einer tiefergehenden Einführung in die Arbeits- und Funktionsweise der Controllerboards selbst wird insbesondere auch auf die Messwerterfassung und -verarbeitung mit digitalen Prozessoren eingegangen. Insbesondere die Kombination beider Systeme bietet vielfältige und hochinteressante Möglichkeiten. Praktische Projekte aus dem Inhalt: USB-Verbindung zwischen Raspberry Pi 4 und Pico I²C-Kommunikation und Pico als I²C-Device Voltmeter und Computerthermometer Pico W als Web-Server und WLAN-Scanner Frequenzmesser und -generatoren OLED-Displays an Pico und Raspberry Pi 4 Energiesparmonitor Welche Astronauten sind im Orbit? Mini-Monitor für den aktuellen Bitcoin-Kurs

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Praxisnahe Projekte, Profi-Tricks und eigene Anwendungen Dieses Buch führt Sie Schritt für Schritt in die faszinierende Welt der State Machines ein und zeigt, wie Sie Hardware direkt und effizient ansteuern können – jenseits klassischer CPU-gesteuerter Ansätze. In diesem Buch lernen Sie: LEDs und NeoPixel kreativ steuern: Blinken, Dimmen, Farbwechsel und komplexe Animationen Taster und Encoder zuverlässig auslesen und in Echtzeit in Ihre Projekte integrieren Analoge Eingänge (ADC) nutzen und Signale digital steuern Servos präzise ansteuern und Bewegungsabläufe automatisieren SPI mit PIO umsetzen, um Displays, Sensoren und Module anzusteuern Menüsysteme und Submenüs auf SPI-Displays realisieren, inklusive Navigation über mehrere Taster PWM, Signalgenerierung und Frequenzsteuerung für akustische oder visuelle Effekte Debugging-Strategien und Tipps, um Ihre PIO-Programme effizient zu entwickeln Alle Beispiele sind praxisnah, sofort umsetzbar und zuverlässig. Mit klaren Anleitungen, Hintergrundwissen und fertigen Codebeispielen lernen Sie, die PIO-Fähigkeiten des Pico maximal zu nutzen – egal ob für Maker-Projekte, Prototypen oder professionelle Anwendungen. Erleben Sie, wie Sie komplexe Hardwaresteuerung elegant mit dem Pico realisieren können – schneller, flexibler und leistungsfähiger als je zuvor.

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From basics to flows for sensors, automation, motors, MQTT, and cloud services This book is a learning guide and a reference. Use it to learn Node-RED, Raspberry Pi Pico W, and MicroPython, and add these state-of-the-art tools to your technology toolkit. It will introduce you to virtual machines, Docker, and MySQL in support of IoT projects based on Node-RED and the Raspberry Pi Pico W. This book combines several elements into a platform that powers the development of modern Internet of Things applications. These elements are a flow-based server, a WiFi-enabled microcontroller, a high-level programming language, and a deployment technology. Combining these elements gives you the tools you need to create automation systems at any scale. From home automation to industrial automation, this book will help you get started. Node-RED is an open-source flow-based development tool that makes it easy to wire together devices, APIs, and online services. Drag and drop nodes to create a flowchart that turns on your lights at sunset or sends you an email when a sensor detects movement. Raspberry Pi Pico W is a version of the Raspberry Pi Pico with added 802.11n Wi-Fi capability. It is an ideal device for physical computing tasks and an excellent match to the Node-RED. Quick book facts Project-based learning approach. Assumes no prior knowledge of flow-based programming tools. Learn to use essential infrastructure tools in your projects, such as virtual machines, Docker, MySQL and useful web APIs such as Google Sheets and OpenWeatherMap. Dozens of mini-projects supported by photographs, wiring schematics, and source code. Get these from the book GitHub repository. Step-by-step instructions on everything. All experiments are based on the Raspberry Pi Pico W. A Wi-Fi network is required for all projects. Hardware (including the Raspberry Pi Pico W) is available as a kit. Downloads GitHub

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. PbMonitor v1.0A Battery-Monitoring System for UPS and Energy Storage Applications Solar Charge Controller with MPPT (1)Basic Principles of a Solar Controller for Stand-Alone Systems B-Field Integration Magnetometer With Home-Made Sensors Precise or Accurate?Your Instruments Need to Be Both! AD7124 A Precision ADC in PracticeFeatures for Sensor Signal Conditioning PID Control ToolOptimize Your Parameters Easily embedded world 2025 Starting Out in Electronics……Continues with Tone Control Academy Pro BoxBook + Online Course + Hardware Milliohmmeter AdapterUses the Precision of Your Multimeter The Next Leap in SemiconductorsOnward Toward 1.4 nm Through-Hole Technology ConnectorsThe Best of Two Worlds: THR Frequency CounterPortable and Auto-Calibrating Via GPS Analog MetersPeculiar Parts, the Series Stand-Alone Crystal TesterHow Accurate Is Your Clock Source? Low-Cost I²C TesterConnect I²C Devices Directly to Your PC From Life’s ExperienceWho Doesn’t Honor the Small Things? 2025: An AI OdysseyThe Transformative Impact on Software Development Err-lectronicsCorrections, Updates, and Readers’ Letters Raspberry Pi Standalone MIDI Synthesizer (2)Enhancing Our Setup with Intelligence Nortonized Wien Bridge OscillatorSmall Changes Yield Significant Improvements Putting a $0.10 Controller to the TestThe CH32V003 RISC-V Microcontroller and MounRiver Studio in Practice An FPGA-Based Audio Player with Equalizer (2)Adding Volume Control, Advanced Mixing, and a Web Interface

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LoRa with the Raspberry Pi PicoFun with MicroPython What Is RISC-V?And Why the Industry Is So Excited About a New Processing Core! Elektor @ 60Circuits of Summer Past Versatile Power Supply for BreadboardsPositive and Negative Voltages Out of 5 V from USB Raspberry Pi Pico EssentialsSample Chapter: Wi-Fi with the Raspberry Pi Pico Magnetic Levitation the Easy Way Hands On the Parallax Propeller 2Part 3: Smart Pins and Serial Data (UART) Nucleo Boards Programming with the STM32CubeIDESample Chapter: FreeRTOS for the STM32 MCU Developer's ZoneTips & Tricks, Best Practices and Other Useful Information Miniware DT71 Digital Tweezers Wearable Wi-Fi Gadget: ESPHome Does the Job Again Starting out in ElectronicsEasier Than Imagined! This Concludes the Subject of “Capacitors” Simple Sketches Using the Qwiic Ecosystem Java on the Raspberry Pi (Part 2)Controlling GPIOs with a Spring REST Service Raspberry Pi Compute Module 4A Raspberry Pi for Industry Portable, Stand-Alone Air Quality Display for 2.5 µm ParticlesKeep(s) an Eye on Your Health From Life’s ExperienceThe Future Was Better in the Past MicroPython for the ESP32 and FriendsPart 1: Installation and Our First Programs Charge-Coupled Devices in OscilloscopesPeculiar Parts, the series ESD – The Invisible DestroyerComponents Trashed by a Bolt from the Blue Solar Power for Mowing RobotsEcological, Inexpensive, Simple! Europe’s Efforts to Tame Big Tech HexadokuThe Original Elektorized Sudoku

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De Elektor Zenerdiode-tester is in wezen een constante-stroombron die in stappen van 1 tot 50 mA kan worden geschakeld. Hij kan worden gebruikt om zenerdiodes tot een maximum van 54 V te testen. Dankzij een 60-V step-upconverter kan het apparaat worden gevoed met de gebruikelijke 5 tot 12 V. Het principe van deze tester is eenvoudig. Een zenerdiode of een ander DUT (device under test, zoals een LED) wordt gevoed door een instelbare stroombron. De spanning over het DUT kan met een multimeter worden gemeten. De spanning van de meeste (kleine) zenerdiodes wordt gespecificeerd bij een stroom van 5 mA. Afhankelijk van de toepassing kan ook de spanning bij andere stromen interessant zijn. Daarom zijn er zes stroominstellingen beschikbaar: 1, 2, 5, 10, 20 en 50 mA. LED’s worden vaak gespecificeerd bij een stroom van 20 mA. Wat kan worden getest: Of een zenerdiode defect is (kortsluiting of hoogohmig). Of een zenerdiode de juiste zenerspanning heeft. Hoe een zenerspanning verandert bij verschillende stromen. Welke exacte spanning aanwezig is bij een geïntegreerde spanningsreferentie. Of LED’s in een serieschakeling verschillen in helderheid (vandaar de stroom van 20 mA). Wat de stroomversterking is bij verschillende basisstromen in (vermogens)transistoren. De kit bevat alle onderdelen die in de stuklijst staan vermeld, inclusief printplaat en behuizing. Specificaties Voedingsspanning 5…12 V/2 A (USB-C) Voedingsstroom (Itest = 50 mA) 1,1 A bij 5 V / 412 mA bij 12 V Selecteerbare stromen 1, 2, 5, 10, 20 en 50 mA Max. testspanning >54 V bij Itest ≥1 mA Max. uitgangsspanning 60 V bij Itest = 0 mA Spanningslimiet bij 5 V 4,5 V bij Itest = 1 mA / 5,18 V bij Itest = 50 mA Afmetingen (behuizing) 110 x 82 x 44 mm Afmetingen (PCB) 105,4 x 67,3 mm Aansluitingen 4 mm banaanstekkerbussen voor multimeter 2 mm banaanstekkerbussen voor testklemmen USB-C-aansluiting voor voeding Inbegrepen Weerstanden R1 = 3.3 kΩ, 600 mW, 1% R2 = 0.15 Ω, 1 W, 5%, LS 12.7 mm, ø 3.5 mm R3, R8 = 180 Ω, 600 mW, 1% R4, R6, R16 = 1 kΩ, 600 mW, 1% R5, R19 = 47 kΩ, 600 mW, 1% R7 = 3.9 kΩ, 1 W, 5%, LS 12.7 mm, ø 3.5 mm R9, R10, R12 = 10 kΩ, 600 mW, 1% R11, R13 = 100 Ω, 600 mW 1% R14 = 249 Ω, 600 mW, 1% R15 = 499 Ω, 600 mW, 1% R17 = 2.49 kΩ, 250 mW, 1% R18 = 4.99 kΩ, 250 mW, 1% Condensatoren C1 = 470 uF / 35 V, 20%, Ir = 1.86 A, ø 12.5 mm, LS 5 mm, ESR = 0.038 Ω (Panasonic EEUTP1V471) C2 = 1 uF / 100 V, 10%, X7R, LS 5 mm C3 = 2.2 nF / 50 V, 10%, X7R, LS 5 mm C4, C7 = 100 nF / 100 V, 10%, X7R, LS 5 mm C5 = 100 uF / 100 V, 20%, ø 14 mm max., LS 5 mm C6 = 1 nF / 100 V, 10%, X7R, LS 5 mm Inductor L1 = 100 uH, Irms = 2.4 A, Isat = 3.5 A, 0.09 Ω, radial, pitch 2.5/5/10 mm, ø 14 mm max. (Kemet SBC8-101-242) Halfgeleiders D1 = MUR120G, DO-41 D2, D4 = STPS3150RL, DO-201AD D3 = Z-diode, 18 V, 1.3 W (BZX85C18) D5 = Z-diode, 5.1 V, 0.5 W (1N5231B) LED1 = LED in pushbutton S1 LED2 = LED, green, 3 mm IC1 = MC34063, DIP-8 IC2 = LM4040BIZ-5.0/NOPB, TO-92 (TO-226AA-3) IC3 = TL051CP, DIP-8 T1 = BC327.25, TO-92 T2 = STP40NF10L, TO-220 T3 = IRF9510PBF, TO-220 T4 = 2N7000, TO-92 Overige K1, K2, S1, S3 = 2-way screw terminal block, LS 3.5 mm, max. 1.5 mm² connected to K1 = USB-C socket, 30 V/3 A, chassis mounted, wired, 9 x 16 mm connected to K2 = Banana Connector, 2 mm, Socket, 60 VDC, Panel Mount, red (Multicomp 24.102.1) connected to K2 = Banana Connector, 2 mm, Socket, 60 VDC, Panel Mount, black (Multicomp 24.102.2) Test clip, red, 30 VAC/60 VDC (Hirschmann 931467101) Test clip, black, 30 VAC/60 VDC (Hirschmann 931467100) S1 = Pushbutton, panel mount, SPST-NO, 30 DC/100 mA, with red LED S2 = Rotary Switch, 6 position, 2 pole, 30°, 250 V/150 mA S3 = Toggle switch, panel mount, SPDT, solder lugs, 28 VDC T2, T3 = Heat sink, 15°C/W, FK 214 SA-CB Enclosure Hammond 1591XXSSBK, ABS, 110 x 82 x 44 mm Knob for S2, round shaft 6 mm, ø 21 mm, with indicator line (Multicomp CP-LB21-6-6D) 4 x Self-tapping screw #4-1/4", carbon steel, pan head Banana plug, red, 2 mm, 60 VDC (Multicomp 25.205.1) Banana plug, black, 2 mm, 60 VDC (Multicomp 25.205.2) Banana socket, black 4 mm, panel mount Banana socket, red 4 mm, panel mount for LED1, LED2 = Pin header, 1 x 2, vertical, pitch 2.54 mm for LED1, LED2 = Pin socket, 1 x 2, vertical, pitch 2.54 mm for T2, T3 = M3 screw, 10 mm, steel, pan head 2 x M3 washer, plain, steel 4 x M3 nut for IC1, IC3 = DIP-8 socket Wire, black, 0.25 mm² (24 AWG), stranded 14 x 0.15 mm, 1 m Wire, red, 0.25 mm² (24 AWG), stranded 14 x 0.15 mm, 1 m PCB 250772-1 v1.1 Links Artikel Elektor Labs

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Internet of Things (DE) | E-book

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