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39 Experiments with Raspberry Pi and Arduino This book is about Raspberry Pi 3 and Arduino camera projects. The book explains in simple terms and with tested and working example projects, how to configure and use a Raspberry Pi camera and USB based webcam in camera-based projects using a Raspberry Pi. Example projects are given to capture images, create timelapse photography, record video, use the camera and Raspberry Pi in security and surveillance applications, post images to Twitter, record wildlife, stream live video to YouTube, use a night camera, send pictures to smartphones, face and eye detection, colour and shape recognition, number plate recognition, barcode recognition and many more. Installation and use of popular image processing libraries and software including OpenCV, SimpleCV, and OpenALPR are explained in detail using a Raspberry Pi. The book also explains in detail how to use a camera on an Arduino development board to capture images and then save them on a microSD card. All projects given in this book have been fully tested and are working. Program listings for all Raspberry Pi and Arduino projects used in this book are available for download on the Elektor website.

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Elektor GREEN en GOLD leden kunnen deze uitgave hier downloaden. Nog geen lid? Klik hier om een lidmaatschap af te sluiten. CaptureCountobjectdetector en -teller op de Raspberry Pi 5 Spanningsreferentie met Arduino Pro Minilineariseer en kalibreer analoge ingangen FPGA’s voor beginnersvan MCU naar FPGA-programmering Update: STM32 Wireless Innovation Design Contest 2024 Bluetooth LE met MAUIbesturingsapps voor Android en co. Port Expander breakout-boardmeer I/O’s op je development board AI-specialistmachine learning met de Jetson Nano 2024: een AI-odysseeeen eerste verkenning van TensorFlow 262.144 manieren om Game of Life te spelenlezersproject in het kort Uit het leven gegrepende Chinese draak Draaien met die (DC-borstel)motor!voorbeeldprojecten uit de Elektor Motor Control Development Bundle ESP32/RS-232-adapterdraadloze verbinding voor klassieke meetinstrumenten Alle begin......gaat verder met de opamp Aanbevolen ESP-bibliotheken Piëzo-elektrische componentenvreemde onderdelen Slimme objecttellereenvoudige beeldherkenning met Edge Impulse Oplossingen voor de lastigste uitdagingen bij embedded ontwikkeling ESP32 Terminalhandheld met aanraakscherm Aan de slag met Zephyr RTOSkrachtig – maar lastig... Bekroonde ethiekeen vraaggesprek met Alexander Gerfer, CTO van Würth Elektronik eiSos, over het faciliteren van innovatie en bewust gedrag Project 2.0correcties, updates en brieven van lezers

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This book contains 50 fun and exciting projects for PIC microcontrollers such as a laser alarm, USB teasing mouse, eggtimer, youth repellent, soundswitch, capacitive liquid level gauge, 'finger in the water' sensor, guarding a room using a camera, mains light dimmer (110-240 volts), talking microcontroller and much more. Several different techniques are discussed such as relay, alternating current control including mains, I²C, SPI, RS232, USB, pulse width modulation, rotary encoder, interrupts, infrared, analog-digital conversion (and the other way around), 7-segment display and even CAN bus. You can use this book to build the projects for your own use. The clear explanations, schematics and even pictures of each project make this a fun activity. For each project the theory is discussed and why the project has been executed in that particular way. That means you can also use this book as a studybook, or as basis for larger and more complicated projects. All projects use a breadboard so modification and expansion is easy. Three PIC microcontrollers are used, the 16f877A, 18f4455 and 18f4685. It is also discussed how you can migrate your project from one microcontroller to another – 15 types are supported - including two example projects. All software that is used in this book can be downloaded for free. That also applies to the open source programming language JAL. This powerful and yet easy to learn language is used by hobbyists as well as professionals. This book can also be used as a reference guide. It explains all JAL commands, as well as the expansion libraries. Using the index you can easily find example projects that illustrate the use of these commands. Even when you have built all projects in this book you will still want to keep it within arm's reach.

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USB to S/PDIF InterfaceDigital audio output for computer, laptop, tablet or smartphone Practical ESP32 Multitasking (4)Binary semaphores A Wireless Temperature Sensor for the Nixie Bargraph ThermometerA multipurpose solution with a design trick Multitasking with Raspberry PiShowcase: a traffic lights controller Timer for Headphone Amplifier Open-Network Weather Station Mk.2Part 2: Software Home Automation Made EasyWith ESPHome, Home Assistant & MySensors The Storage CRTPeculiar Parts, the series Artificial Intelligence for Beginners (3)A stand-alone neural network Programming PICs from the Ground UpAssembler routine to output a sine wave IKEA Lamp HackEquipping an inexpensive IKEA lamp with NeoPixel LEDs and WLAN Don't Let Your Hobby Project Collect Dust in a CornerSupply-side time management and spiral development Starting Out in Electronics (4)Easier than imagined! Homelab Tours: The Vinyl CutterReturning to the golden age of LPs The 8-Bit Microcontroller and BeyondInterview with Tam Hanna Small Circuits RevivalFrom the Elektor suggestions box Review: Owon OW18E Bluetooth Multimeter InteractiveCorrections & Updates || Questions & Answers Steeped in ElectronicsLead-free soldering and EU regulatory zeal Promising Project: New 50 Hz – 2 MHz LCR meterAccuracy and ease of use Error AnalysisTips on FMEA, High Current, and More Developer's ZoneTips & Tricks, Best Practices and Other Useful Information Review: Siglent SDL1020X Programmable DC Electronic Load High-Voltage Power Supply with Curve TracerGenerate voltages up to 400 V and trace characteristics curves for valves and transistors Hexadoku 2009EL Analogue Electronics DesignCase Study #2 — Part 1: Analogue filter theory The Elektor StoreNever expensive, always surprising How to Draw a Circuit Diagram

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Einführung in die SPS-Programmierung mit dem Open-Source-Projekt auf dem Raspberry Pi und Modbus-Beispiele mit dem Arduino Uno und ESP8266 Die SPS-Programmierung ist heute in der Industrie und in der Hausautomation sehr weit verbreitet. In diesem Buch beschreibt der Autor, wie der Raspberry Pi 4 als SPS eingesetzt werden kann. Angefangen mit der Softwareinstallation auf dem Raspberry Pi und dem SPS-Editor auf dem PC geht es nach einer Beschreibung der Hardware an das Programmieren. Es folgen interessante Beispiele nach IEC 61131-3 in den verschiedenen Programmiersprachen. Ausführlich wird auch erklärt, wie der SPS-Editor benutzt wird und wie die Programme auf den Raspberry Pi geladen und ausgeführt werden. Angefangen mit der Programmierung mit KOP (Kontaktplan) über ST (Structured Control Language) bis zu AS (Special Function Chart) werden alle IEC-Sprachen mit Beispielen behandelt. Diese können auf der Website des Autors heruntergeladen werden. Auch die Vernetzung kommt nicht zu kurz. Der Arduino Uno und der ESP8266 werden als ModbusRTU- bzw. ModbusTCP-Module programmiert, um Zugriff auf externe Peripherie zu erhalten. Damit ist es möglich, Sensoren einzulesen und Verbraucher zu schalten. Interessant dürften auch E/A-Schaltungen sein, die dem 24V-Industriestandard entsprechen. Befehlsübersichten für ST und KOP runden das Buch ab. Nach dem Durcharbeiten des Buches ist der Leser in der Lage, eigene SPS-Steuerungen mit dem Raspberry Pi zu verwirklichen.

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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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With Examples for Raspberry Pi Pico and ESP32 Creating and programming small electronic systems is now easier than ever before. With inexpensive development boards and modern software tools, anyone curious about embedded design can quickly move from an idea to a working piece of hardware. At the heart of this change is MicroPython—a clear, interactive, and beginner-friendly way to program microcontrollers while still remaining closely connected to the underlying electronics. This book introduces embedded programming through MicroPython on popular platforms such as the Raspberry Pi Pico and the ESP32. You will discover how to use microcontrollers for reading inputs, processing data, and controlling outputs in a predictable, real-time loop. With just a few lines of code, you can blink LEDs, read sensors, drive motors, and communicate with the outside world. The interactive REPL programming interface encourages experimentation and fast learning, making concepts tangible from the very first chapter. While different boards offer different capabilities, they all share the same core principles. Timers, GPIO, analog I/O, PWM, interrupts, and communication interfaces form the foundation of every embedded system. By focusing on these universal building blocks, this book helps you build skills that transfer across platforms and scale naturally toward more advanced development. Whether you are a beginner or an experienced programmer entering embedded systems, you will find that working with MicroPython is both practical and genuinely enjoyable.

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. ESP32 Audio Transceiver Board (Part 2)Wireless Audio Transmission Inductive AM TransmitterUses Pico’s PIO in an Arduino Sketch Navigating Wireless ProtocolsA Technical Guide Satellite Tracking Using LoRaThe TinyGS Network Bringing Space Data to Earth 4G-Compatible SMS Remote ControlRemotely Control Your Equipment High-Speed ProbeHigh-Impedance Inputs for Signals up to 200 MHz From Life’s ExperienceKafka KrakenSDR Performance Tests with the RP2350Is an Upgrade from Raspberry Pi Pico 1 to Pico 2 Worthwhile? Contact-Free E-Field Measurements (2)A Laser Vibrometer for Assessing the Membrane's Vibrations Crystals and OscillatorsImproving Crystal Accuracy Through Capacitor Selection Starting Out in ElectronicsSpecial Audio ICs Getting Started with Coding a DIY Project SPECTRAN® V6 MobileModular, Configurable Real-Time Spectrum Analyzer for Reliable Measurements Across All Frequency Ranges The Future of AI Is Forged in SiliconAn Interview with Anastasiia Nosova Autonomous Sensor Node v2.0 (System Architecture)Solar-Powered Sensing Platform with Integrated GPS, LoRaWAN, and More Precise PositioningBluetooth Channel Sounding Tested Powering the Future of Wireless CommunicationBTRY’s Ultra-Thin Solid-State Batteries Test-Driven Development in Firmware Writing Phone-Controlled Model CarWi-Fi + ESP32 + Smartphone = Remote Control 2025: An AI OdysseyAI Reasoning Models: The Chain-of-Thought Revolution Solar Charge Controller with MPP Tracking (3)Software and Commissioning Raspberry Pi Zero Web Streaming CameraUsing the ZeroTier VPN

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Cool Projects for Test, Measurement, and Control The Raspberry Pi has dominated the maker scene for many years. Freely accessible I/O pins have made it one of the most popular processor boards of all time. However, the classic Raspberry Pi has no analog inputs. Direct measurement of analog values is therefore not possible. Consequently, photodiodes, NTCs, Hall sensors, etc. cannot be read directly. In addition, the pins are connected directly to the exposed contacts, i.e. without a driver or protection circuit. This can quickly destroy the central controller and thus the entire Raspberry Pi. These problems can be elegantly solved with the Pico. As a front-end, it can easily handle a wide range of measurement tasks. In addition, the Pico is much cheaper than a classic Raspberry Pi 4 or 5. If a faulty circuit leads to the destruction of the Pico, this is relatively easy to handle. This makes the combination of a classic Raspberry Pi 4 or 5 and the Pico an ideal pair. The book introduces the broad and highly topical field of modern controller technology using the combined force of a Raspberry Pi 4 or 5 and a Raspberry Pi Pico. In addition to a detailed introduction to the operation and functionality of the controller boards themselves, the book also focuses on data acquisition and processing with digital processors. Especially the combination of both systems offers a wide range of interesting possibilities. Some practical projects from the contents: USB between Raspberry Pi 4 or 5 and Pico I²C Communication and Pico as an I²C device Voltmeter and Computer Thermometer Pico W as a Web Server and WLAN Scanner Frequency Meters and Generators OLED Displays on Raspberry Pi 4 or 5 and Pico Energy Saving Monitor Which Astronauts are in Orbit? Mini Monitor for Current Bitcoin Exchange Rate

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COMMANDE DE MOTEURS : LES PONTS EN HIntroduction aux moteurs CC, pas à pas et sans balaisL'ÉQUIPE D'ELEKTOR LABNotre approche, nos outils préférés et plus encoreRASPBERRY PI COMME TÉLÉCOMMANDE KVMTest du logiciel Pi-KVMIQAUDIO CODEC ZEROCarte son au format Raspberry Pi ZeroLE PROJET PIKVM ET SES ENSEIGNEMENTSEntretien avec Maxim DevaevVÉHICULE AUTONOME AVEC LIDAR 2DUn ESP32 Pico interprète les données du lidarLE RASPBERRY PI ZERO 2 W PASSE AU QUADRICOEURNOTES DU FORUM MONDIAL DE L'ÉLECTRONIQUE ÉTHIQUE 2021COMMANDE DE MONTEURLa commande des moteurs devient simpleMOTEURS ÉLECTRIQUES DE GRANDE TAILLEPrincipes de base et informations utilesPRISE EN MAIN DU MICROCONTRÔLEUR ESP32-C3 RISC-VPROTÉGEZ-VOUS ET PROTÉGEZ LES AUTRES !Interrupteur général pour paillasse (DIY)CRÉATION D'INTERFACES GRAPHIQUES EN PYTHON ÈME 2Mon nom n'est pas BondGAGNANTS DU CONCOURS FAST FORWARD 2021 DU SALON PRODUCTRONICATESTEUR DE SERVO POLYVALENTVérification du comportement en l'absence de fiche techniqueMODBUS SANS FIL (PARTIE 2)Logiciel de la carte Modbus TCP sans filVOYAGE DANS LES RÉSEAUX NEURONAUX (3E PARTIE)Les neurones pratiquesDANS L'INTIMITÉ D'UN PROCESSEUR OPEN SOURCEExtrait : résultats des FPGA Lattice et XilinxDÉMARRER EN ÉLECTRONIQUE... (10)Toujours la bobine, mais avec ses applications pratiques dans l'audio.PROJET 2.0Corrections, mises à jour et courriers des lecteursDE LA COULEUR AUSONComment exploiter un capteur de couleurs avec l'I2CSOURCEMÈTRE BATTLAB-ONEMesurer et optimiser la durée de vie des batteries des appareils IdOTRACEUR DE FUITES À LA TERRE SIMPLEMesure de l'isolation du secteurPAUVRETÉ ET ÉLECTRONIQUEQuand le courant économique passe malHEXADOKUcasse-tête pour elektorniciens

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Plateforme tout-en-un d'apprentissage et de développement en IA pour l'Edge Intelligence Ce kit de démarrage IA basé sur NVIDIA Jetson est une plateforme polyvalente pour l'apprentissage, le développement et l'expérimentation pratique de l'IA en périphérie (Edge AI). Conçu pour être utilisé avec le NVIDIA Jetson Orin Nano, le kit associe un écran IPS de 11,6 pouces, une caméra motorisée (pan-tilt) de 8 mégapixels et un système d'interaction vocale basé sur l'IA. Il comprend 30 modules fonctionnels et 38 cours Python soigneusement élaborés, allant du niveau débutant au niveau avancé. Le contenu pédagogique couvre les fondamentaux de Python, la technologie des capteurs, la vision par IA et la reconnaissance d'images. Grâce à des exercices pratiques étape par étape — allant de la programmation de base aux applications concrètes de vision par ordinateur — ce kit constitue une plateforme idéale pour les étudiants, les makers, les développeurs et toute personne souhaitant explorer l'intelligence artificielle et l'Edge Computing. Remarque : Le NVIDIA Jetson Orin Nano n'est pas inclus. Caractéristiques Conçu pour le NVIDIA Jetson Orin Nano Module d'interaction vocale par IA Caméra 8 MP avec contrôle panoramique et inclinaison Prend en charge le suivi d'objets et de visages Aucune soudure ni câblage complexe requis Écran IPS intégré de 11,6 pouces 30 modules fonctionnels 38 leçons Python étape par étape Interfaces d'extension I²C, UART et GPIO Mallette de transport incluse Spécifications Processeur principal Jetson Orin Nano Nombre de capteurs 30 Conception de la carte de capteurs Carte de capteurs intégrée ; aucune soudure ni câblage complexe requis Écran Écran IPS de 11,6 pouces Résolution de l'écran 1366 x 768 Caméra IMX219 8 MP Interfaces d'extension 2x I²C, 1x UART, 1x IO D13, 1x IO D12 Environnement de programmation Basé sur Python Nombre de tutoriels 38 tutoriels créatifs Public cible Étudiants, enseignants, passionnés de matériel informatique Scénarios d'application Idéal pour apprendre la programmation d'IA et les bases de la Jetson Orin Nano Dimensions 300 x 200 x 100 mm Liste des modules Module Quantité Capteur de température et d'humidité 1 pièce Bouton-poussoir 4 pièces Capteur de distance à ultrasons 1 pièce Capteur de luminosité 1 pièce Potentiomètre linéaire 1 pièce Buzzer 1 pièce Écran LCD 1 pièce Télécommande infrarouge 1 pièce Relais 1 pièce Module NFC 1 pièce Capteur de mouvement PIR 1 pièce Joystick 1 pièce Afficheur 4 chiffres 1 pièce LED 1 pièce Microphone 1 pièce Haut-parleur 1 paire Moteur vibrant 1 pièce Capteur tactile 1 pièce Matrice RVB 8x8 1 pièce Capteur de pression atmosphérique 1 pièce Capteur d'inclinaison 1 pièce Moteur pas à pas 1 pièce Accéléromètre et gyroscope 1 pièce Capteur de gaz (MQ2) 1 pièce Capteur à effet Hall 1 pièce Encodeur rotatif 1 pièce Commutateur photoélectrique en U 1 pièce Thermistance NTC 1 pièce Servomoteur 2 pièces Caméra monoculaire 1 pièce Inclus 1x Elecrow Kit de démarrage AI pour Jetson Orin Nano 1x Télécommande infrarouge 1x Carte NFC 1x Carte SD 128 Go 1x Câble GPIO 40 broches 2x Câble FPC 22 broches 2x Câble FPC 24 broches 1x Carte adaptateur Jetson DP et USB Non inclus NVIDIA Jetson Orin Nano Téléchargements Manual Wiki OpenClaw Install and Config Guide

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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! Super-Servo-TesterBis zu vier Servos einzeln oder eingebaut testen Analoge Signale und der MikrocontrollerADCs, DACs, Strommessung und mehr embedded world 2023 Sub-Nyquist-Sampling in der PraxisHöhere Frequenzen mittels Unterabtastung sicher erfassen Hier Android-Smartphone, dort ESP32?Praxisprojekt mit der Android WiFi-API Aktives 1-kHz-Filter für VerzerrungsmessungenBessere Messungen durch Optimierung des Messsignals Aller Anfang...muss nicht schwer sein: Wir multivibrieren weiter! Projekt 2.0Korrekturen, Updates und Leserbriefe Das neue I3C-ProtokollWürdiger I2C-Nachfolger oder viel Rauch um Nichts? BlueRC: IR-Fernsteuerung mit Smartphone und ESP32Anpassungsfähig und universell Mikrocontroller-Dokumentationen verstehenTeil 2: Register und Blockschaltbilder Automatisierung der Prüf- und MesstechnikProgrammieren von Prüfgeräten, damit sie tun, was Sie wollen Infografik: Messen und Testen Überspannungsschutz für sicheren BetriebTransientenschutz für nicht-isolierte DC/DC-Leistungsmodule Mess- und Prüfgeräte von WihaInstallationstester und Messgeräte, auf die Sie sich verlassen können Automatisierung von Tests und Zusammenarbeit bei Testergebnissen Aus dem Leben gegriffenElektronik auf hohem Niveau EnergieloggerEnergie messen und aufzeichnen Aufgebaut: Das 4tronix M.A.R.S. Rover Kit Parkscheibe mit E-Paper DisplayEin innovativer digitaler Ersatz eCO2-Telegram-BotLuftqualitätsmessung mit Telegram-Anbindung Hinter den Kulissen von High-End-Audio im EigenbauElektor-Ingenieur Ton Giesberts im Interview über die hohe Kunst des Analogdesigns Das besondere ProjektEs gibt noch viel zu tun! RFID-Tag lesen und RFID-TürschlossProjektbeispiele aus dem Arduino-Experimentierpaket von Elektor Oszilloskop-Stromsonde für HFHochfrequenz-Strommessung leichtgemacht Nichts für Anfänger – Makerfabs 6 DOF Robot ArmMit Raspberry Pi Pico und MicroPython Generative KIWer hat das eigentlich gemacht? Hexadoku

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