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Programmierbare Taschenrechner selbst gebaut (E-book)

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A Beginner's Guide to AI and Edge Computing Artificial Intelligence (AI) is now part of our daily lives. With companies developing low-cost AI-powered hardware into their products, it is now becoming a reality to purchase AI accelerator hardware at comparatively very low costs. One such hardware accelerator is the Hailo module which is fully compatible with the Raspberry Pi 5. The Raspberry Pi AI Kit is a cleverly designed hardware as it bundles an M.2-based Hailo-8L accelerator with the Raspberry Pi M.2 HAT+ to offer high speed inferencing on the Raspberry Pi 5. Using the Raspberry Pi AI Kit, you can build complex AI-based vision applications, running in real-time, such as object detection, pose estimation, instance segmentation, home automation, security, robotics, and many more neural network-based applications. This book is an introduction to the Raspberry Pi AI Kit, and it is aimed to provide some help to readers who are new to the kit and wanting to run some simple AI-based visual models on their Raspberry Pi 5 computers. The book is not meant to cover the detailed process of model creation and compilation, which is done on an Ubuntu computer with massive disk space and 32 GB memory. Examples of pre-trained and custom object detection are given in the book. Two fully tested and working projects are given in the book. The first project explains how a person can be detected and how an LED can be activated after the detection, and how the detection can be acknowledged by pressing an external button. The second project illustrates how a person can be detected, and how this information can be passed to a smart phone over a Wi-Fi link, as well as how the detection can be acknowledged by sending a message from the smartphone to your Raspberry Pi 5.

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. Low-Noise Lab Power Supply (1)A Quiet Source for Sensitive Circuits STM32 Edge AI Contest 2025: The Winners Batteries TodayTechnology and Differences in Lithium Batteries Adjustable Electronic LoadStatic + Dynamic DC Load Step-Down Converter from 48 V to 5 VThe Story of Circuit Development Autonomous Sensor Node v2.0Part 2: Hardware Validation and Power Optimizations VaristorsPeculiar Parts, the Series Graphical Grid Frequency MeterMonitor Grid Quality Starting Out in Electronics……Brings Its Own End Peak Current Load SMD FerritesMore Resilient Against Current Peaks Elektor Live! Expert Day 2025 Energy Harvesting Set to Accelerate IoT and IIoT Use CasesHow Energy Harvesting Frees IoT from the Grid Fnirsi DPS-150Compact and Portable Power Supply and Converter Adjustable USB-C Power SourceTurn Your USB-C Charger Into an Adjustable Power Supply Simple Charger and Capacity TesterWith Two Cheap “Off-the-Shelf” Modules Smart Color Detector with AI Voice and Playback PbMonitor v2.0Introduction to the Updated Battery Monitoring System A Fan for the Mini Reflow PlateSmart Modifications That Improve Results From Life’s ExperienceThe Tsunami of Indulgence Err-lectronicsCorrections, Updates, and Readers’ Letters 2026: An AI OdysseyWhen Models Start Dictating the Hardware Precision Picoammeter (2)Assembling, Calibration, and Test Wireless Device Poweringwith Inductive Technology AI-Based Autonomous DrivingThe RDW’s Self Driving Challenge 2024 Sound Card as Signal GeneratorPC as DCF77 Test Transmitter

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Die Programmiersprache „Python“ hat in den letzten Jahren einen enormen Aufschwung erlebt. Nicht zuletzt haben verschiedene Einplatinensysteme wie der Raspberry Pi zu deren Bekanntheitsgrad beigetragen. Aber auch in anderen Gebieten, wie der Künstlichen Intelligenz oder dem Machine Learning, hat Python weite Verbreitung gefunden. Es ist daher naheliegend, Python bzw. die Variante „MicroPython“ auch für den Einsatz in SoCs (Systems on Chip) zu verwenden. Leistungsfähige Controller wie der ESP32 der Firma Espressif Systems bieten eine hervorragende Performance sowie Wi-Fi- und Bluetooth-Funktionalität zu einem günstigen Preis. Mit diesen Eigenschaften wurde die Maker-Szene im Sturm erobert. Im Vergleich zu anderen Controllern weist der ESP32 einen deutlich größeren Flash und SRAM-Speicher, sowie eine wesentlich höhere CPU-Geschwindigkeit auf. Aufgrund dieser Leistungsmerkmale eignet sich der Chip nicht nur für klassische C-Anwendungen, sondern insbesondere auch für die Programmierung mit MicroPython. Das vorliegende Buch führt in die Anwendung der modernen Ein-Chip-Systeme ein. Neben den technischen Hintergründen steht vor allem MicroPython selbst im Vordergrund. Nach der Einführung in die Sprache werden die erlernten Programmierkenntnisse umgehend in die Praxis umgesetzt. Die einzelnen Projekte sind sowohl für den Einsatz im Labor als auch für Alltagsanwendungen geeignet. Neben dem eigentlichen Lerneffekt steht also auch die Freude am Aufbau kompletter und nützlicher Geräte im Vordergrund. Durch die Verwendung von Laborsteckboards können Schaltungen aller Art mit geringem Aufwand realisiert werden, sodass das Austesten der selbstgebauten Geräte zum lehrreichen Vergnügen wird. Durch die verschiedenen Anwendungen wie Wetterstationen, Digitalvoltmeter, Ultraschall-Entfernungsmesser, RFID-Kartenleser oder Funktionsgeneratoren sind die vorgestellten Projekte auch für Praktika oder Fach- und Studienarbeiten in den Naturwissenschaften bzw. im Natur- und Technikunterricht bestens geeignet.

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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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The Basics, New Ideas & Applications Build digital electronics from the ground up—and take it all the way to practical circuits you can use. This book guides you through the core principles of digital technology with a strongly hands-on approach. You’ll begin with the essentials: signals, devices for working with them, and what "logic 0" and "logic 1" mean in real hardware. Simple demonstration setups made from easy-to-find parts (LEDs, diodes, resistors, switches) help you see how logic behaves, making the theory click before you move on. From there, you’ll explore a wide range of logic elements and how they’re implemented, including classic logic families such as TTL and CMOS. The fundamentals section covers the building blocks of digital systems: flip-flops, Schmitt triggers, registers, counters and dividers, encoders/ decoders, multiplexers/demultiplexers, plus A/D and D/A conversion and timing circuits. Next, the book invites you into "new ideas" in digital electronics—universal logic elements, unconventional approaches (including thyristor-based and fractional logic), and creative logic functions that can inspire original designs. Finally, a large, well-organized collection of application circuits turns knowledge into projects: electronic switches and selectors, pulse generators, PWM regulators, frequency multipliers/dividers, phase shifters, and digital filters. Study it deeply, and you’ll gain not only understanding—but the ability to design and debug digital circuits independently.

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The Siglent SPD4323X is a 4-channel DC Linear Programmable Power Supply equipped with a 4.3-inch TFT-LCD display, friendly human-machine interface, and excellent performance indicators. Real-time waveform display provides engineers with an informative user interface. SPD4323X offers a total output power of 240 W with a resolution of 1 mV/1 mA. The maximum voltage and current for each channel are as follows: CH1: 6 V/3.2 A CH2: 32 V/3.2 A CH3: 32 V/3.2 A CH4: 6 V/3.2 A Features Rated output power: 240 W Rated voltage: 32 V, 12 V, 30 V Up to four high-precision power supplies with independent controllable outputs, supporting CH2 and CH3 series and parallel connections Clear graphical interface with waveform and timer display modes 5-digit voltage and current display with minimum resolution of 1 mV, 1 mA Fast output response time: <50us The high current channel support remote voltage compensation sense function. The maximum compensation voltage is 0.6 V Overvoltage protection and overcurrent protection or safe and accurate operation Equipped with a 4.3-inch TFT-LCD display (480 x 272 resolution) USB and LAN standard communication USB-GPIB module is optional Excellent channel density with up to 4 channels in a 3U half rack package Internal data storage for setups and parameters Embedded Web Server with instrument communication that doesn’t require software installation Fully SCPI programming command set support as well as a LabView driver for remote control and system automation Specifications SPD4323X SPD4121X SPD4306X Channel Output CH1: Voltage 0 to 6 V Current 0 to 3.2 ACH2: Voltage 0 to 32 V Current 0 to 3.2 ACH3: Voltage 0 to 32 V Current 0 to 3.2 ACH4: Voltage 0 to 6 V Current 0 to 3.2 A CH1: Voltage 0 to 15 V Current 0 to 1.5 ACH2: Voltage 0 to 12 V Current 0 to 10 ACH3: Voltage 0 to 12 V Current 0 to 10 ACH4: Voltage 0 to 15 V Current 0 to 1.5 A CH1: Voltage 0 to 15 V Current 0 to 1.5 ACH2: Voltage 0 to 30 V Current 0 to 6 ACH3: Voltage 0 to 30 V Current 0 to 6 ACH4: Voltage 0 to 15 V Current 0 to 1 A Resolution 1 mV, 1 mA 1 mV, 1 mA 1 mV, 1 mA Setting Accuracy Voltage: ±(0.03% of reading+10) mV, Current: ±(0.3% of reading+10) mA Voltage: ±(0.03% of reading+10) mV, Current: ±(0.3% of reading+10) mA Voltage: ±(0.03% of reading+10) mV, Current: ±(0.3% of reading+10) mA Readback Accuracy Voltage: ±(0.03% of reading+10) mV, Current: ±(0.3% of reading+10) mA Voltage: ±(0.03% of reading+10) mV, Current: ±(0.3% of reading+10) mA Voltage: ±(0.03% of reading+10) mV, Current: ±(0.3% of reading+10) mA Display 4.3" TFT-LCD 5-digit voltage and current display 4.3" TFT-LCD 5-digit voltage and current display 4.3" TFT-LCD 5-digit voltage and current display Output power 240 W 285 W 400 W Included 1x Siglent SPD4323X Power Supply 1x Power cord (EU) 1x Output test cord (3 A) 1x USB cable 1x Quick start guide Downloads Datasheet Manual Quick start

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Inhalt Theorie & Anwendung Thermische Simulation von LED-Systemen LUVLED 100 LEDs LEDs ans Netz Laserstrukturierung von TCOs Ha(l)lo LED Wärmemanagement bei LEDs 3D-Laserscanning mit Linienlaser und Smart Camera Selbstbauprojekte Lichtbögen für die Modelleisenbahn LED-Anwendungen mit Arduino LED-Treiber für Maglite-Taschenlampe

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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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De Elektor LoRa Nodeveelzijdige 868MHz-afstandsbediening met status-feedback, een groot bereik en een STM32 Interactiefcorrecties & updates || vragen & antwoorden Analoge elektronica ontwerpencase-study #1 – deel 2: de voorversterker voor de MEMS-microfoon My IoT-button: de knop voor het netdeel 1: IoT-architectuur BASIC voor ESP32/ESP8266programmeren met Annex WiFi RDS ESP32-deurbel via Telegram“de postbode belt maar één keer” Wie het kleine niet eert Beginnen met LoRaWANmet Blue Pill, LoRa-breakout-board en The Things Network “Een voorvechter van Open Internet”vraaggesprek met Wienke Giezeman, initiatiefnemer van The Things Network Meadow F7een board voor .NET-ontwikkelaars Multitasking met de ESP32 (2)taakprioriteiten Met de vos in het IoT (3)eerste stappen op het net Raspberry Pi Bash-commando cheat sheet De meest succesvolle start-up aanjager?HighTechXL, Eindhoven, Nederland Review: RPi-HAT Enviro+meet milieudata met Raspberry Pi en de Enviro+ HAT Uit het leven gegrepenonderdelen bestellen in Oekraïne en Rusland Review: Andonstar AD407beter dan zijn voorganger? Oost West Lab Besteen blik in het allerheiligste, waar onbevoegden geen toegang hebben... Optische probe voor de oscilloscoopmeet helderheidsvariaties van verlichtingssystemen Het TABULA-project: een updatetangibles met gebruikersfeedback Hoe... de maximale kortsluitstroom berekenenen de juiste zekeringautomaat te kiezen TMS1000-serie microcontrollersvreemde onderdelen Alle begin......hoeft niet zo moeilijk te zijn Developer’s Zonetips & trucs, vakkunstigheden en andere nuttige informatie Leidingen opsporenover het zoeken en vinden van onzichtbare en onderbroken leidingen Review: Joy-IT DMSO2D72 portable 3-in-1 oscilloscoop Doe-het-zelf PC voor het elektronicalabtips voor componentenkeuze en bouw De Elektuur 'Intelekt' schaakcomputer (1981)Tiny Chess-86 geport naar de Intel 8088 PCB-kunstverlegt de grenzen van industriële productie Hexadoku

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En moins de 100 lignes de code par projet avec les cartes Feather Sense et Clue Express d'Adafruit Le langage de programmation Python est apprécié par les pédagogues parce que sa syntaxe le rend facile à comprendre. Il s'est également imposé chez les informaticiens expérimentés. La société Adafruit a développé une version spéciale de Python pour l'embarquer sur les microcontrôleurs à 32 bits : CircuitPython. Ce livre permettra au lecteur de s'initier à la programmation en CircuitPython sur deux cartes : Feather BlueFruit Sense (également appelée Feather nRF52840 Sense) et CLUE nRF52840 Express. Chacune est animée par le SoC nRF52840 de NORDIC avec une architecture à 32 bits. Pour ce voyage dans le monde de la programmation embarquée, l'auteur sort du chemin classique, à savoir un cours complet sur la programmation orientée objet appliquée à ce langage. Il préfère emmener le lecteur directement sur le terrain avec des projets qui mettent en oeuvre les cartes et différents périphériques. Plus d'une quarantaine d'exemples et de montages permettent de découvrir la richesse de CircuitPython. Toutefois l'auteur s'est imposé une limite pour ne pas décourager les novices : le code de chaque projet ne dépasse jamais la centaine de lignes. Pour ce qui est du matériel, là aussi la simplicité domine : aucun programmateur, un simple PC suffit ; aucun soudage grâce au câblage sur platine d'essai. Les cartes d'extension FeatherWing à enficher sur la Feather nRF52840 Sense permettent de démultiplier ses fonctions : matrice de LED, enregistreur de données, écran à encre électronique, écran OLED, écran TFT, commande de moteurs, audio, relais… Toutes les étapes (assemblage des différents composants, installation des bibliothèques requises, programmation, tests…) sont expliquées en détail. Le code des différents exemples et projets est disponible sur Github. Le résultat de chaque projet est même présenté sur de courtes vidéos disponibles sur YouTube. À la fin de sa lecture, le nouveau Pythonien pourra facilement approfondir les notions abordées et donner vie à ses propres projets grâce aux outils qu'il aura essayés. Ce livre s'adresse aux lycéens et étudiants ainsi qu'à toute la communauté des makers. Chaîne YouTube de l'auteur : YouTube (Michaël Bottin)

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UNDERSTANDING THE NEURONS IN NEURAL NETWORKS (PART 1)Artificial Neurons EMC PRE-COMPLIANCE TEST FOR YOUR DC-POWERED PROJECT (PART 1)Dual DC LISN ELECTRONIC LOAD FOR DC AND ACUp to 400 V and 10 A (Peak) STARTING OUT IN ELECTRONICSEasier Than Imagined! ...Taking on the Choke! IMAGE PROCESSING WITH THE NVIDIA JETSON NANO (PART 1)The Hardware and Software AN IN-DEPTH LOOK AT MAINS TRANSFORMERSHow Do They Behave When They Are Switched On and Off? YES WE CAN WITH PICAN 3A CAN Bus HAT for the Raspberry Pi 4 BALCONY POWER PLANTDIY Solar Balcony = Speedy Payback! IMAGING AND VIDEO-STREAMING WITH A RASPBERRY PI 4The Raspberry Pi High-Quality Camera in Practice USING DISPLAYS IN RASPBERRY PI PROJECTSSample Chapter: Organic Light Emitting Diode Displays (OLED) HANDS ON THE PARALLAX PROPELLER 2 (PART 4)Sending Strings ELEKTOR @ 60A Look Back at Previous Septembers HOMELAB TOURSIn the Friesian Countryside, Where the Tubes Bloom ... HYBRIDSPeculiar Parts, the series A COMPASS ROSE USING THE GY-271Or Why We Move in Figures of Eight to Calibrate a Sensor FINDING YOUR FOOTPRINTCalculate the Carbon Footprint of Your Electronics ESP32-CONNECTED THERMOSTATKeep Your Wine at the Right Temperature! MAGNETIC LEVITATION THE DIGITAL WAYESP32 Pico Replaces the Analog Comparator ULTIMATE ARDUINO UNO HARDWARE MANUALSample Chapter: Main Microcontroller Bootloader MICROPYTHON FOR THE ESP32 AND FRIENDS (PART 2)Control Matrix Displays Easily MADMACHINE SWIFTIO BOARDModern Language Meets Modern Hardware FROM LIFE’S EXPERIENCEOn-Again, Off-Again Relationship HEXADOKUThe Original Elektorized Sudoku

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