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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. Project-update: ESP32-gebaseerde energiemeterwe gaan verder met het prototype Optimalisatie van balkon PV-centralesoverwegingen, interessante feiten en berekeningen ESP32 met OpenDTU voor balkoncentralesgegevens van kleine omvormers via MCU’s uitlezen Regelbare lineaire labvoeding0...50 V / 0...2 A + dubbele symmetrische voeding Energieopslag – vandaag en morgeneen vraaggesprek met Simon Engelke 2024: een AI-odysseehet houdt nog lang niet op Bluetooth LE op de STM32meetwaarden op afstand uitlezen Mensvriendelijk slim keuken-voorraadsysteem MAUI: programmeren voor PC, tablet en smartphonehet nieuwe framework in theorie en praktijk ChatMagLevkunstmatig intelligente levitatie Eenvoudige PV-regelaarbouw je eerste, volledig functionele PV-energiebeheersysteem Koude-kathode-buizenvreemde onderdelen Uit het leven gegrepennostalgie Alle begin......bekijkt de FET CAN-bus voor de Arduino UNO R4: een tutorialtwee UNO R4’s nemen de bus! Elektor infographicvoeding en energie Vergelijking van vermogensdichtheid en vermogensefficiëntie Aluminium elektrolytische condensatorenstoringspotentieel in audiotechnologie USB testen en metenmet de Fnirsi FNB58 De Pixel Pump pick&place-tooleenvoudiger handmatige assemblage van SMT-printen Oost West Lab Bestnog niet zo lang geleden, in een land heel ver van hier... “In de wereld van ethiek in elektronica kunnen zelfs kleine stappen een aanzienlijke invloed hebben.” Ethiek in elektronicade OECD Guidelines en het Lieferkettensorgfaltspflichtengesetz Chadèche: slimme NiMH-(ont)laderlezersproject in het kort Project 2.0correcties, updates en brieven van lezers

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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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Elektor Magazine EN January/February 2021 (PDF)

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Projects Using Arduino IDE and the LVGL Graphics Library The ESP32 is probably one of the most popular microcontrollers used by many people, including students, hobbyists, and professional engineers. Its low cost, coupled with rich features makes it a popular device to use in many projects. Recently, a board called the ESP32 Cheap Yellow Display (CYD for short) is available from its manufacturers. The board includes a standard ESP32 microcontroller together with a 320x240 pixel TFT display. Additionally, the board provides several connectors for interfaces such as GPIO, serial port (TX/RX), power and Ground. The inclusion of a TFT display is a real advantage as it enables users to design complex graphics-based projects without resorting to an external LCD or graphics displays. The book describes the basic hardware of the ESP32 CYD board and provides details of its on-board connectors. Many basic, simple, and intermediate-level projects are given in the book based on the ESP32 CYD, using the highly popular Arduino IDE 2.0 integrated development environment. The use of both the basic graphics functions and the use of the popular LVGL graphics library are discussed in the book and projects are given that use both types of approaches. All the projects given in the book have been tested and are working. The block diagram, circuit diagram, and the complete program listings and program descriptions of all the projects are given with explanations. Readers can use the LVGL graphics library to design highly popular eye-catching full-color graphics projects using widgets such as buttons, labels, calendars, keypads, keyboards, message boxes, spinboxes, sliders, charts, tables, menus, bars, switches, drop-down lists, animations, and many more widgets.

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. Project Update: ESP32-Based Energy MeterNext Steps in Prototyping Optimizing Balcony Power PlantsConsiderations, Interesting Facts, and Calculations ESP32 With OpenDTU for Balcony Power PlantsRead Data from Small Inverters Via MCUs Variable Linear Power Supply Ensemble0…50 V / 0…2 A + Dual Symmetrical Supply Energy Storage Today and TomorrowAn Interview With Simon Engelke 2024: An AI OdysseyIt’s Not Letting Up Bluetooth LE on the STM32A Way to Read Measurements Remotely Human-Centric Smart Kitchen Grocery Container MAUI: Programming for PC, Tablet, and SmartphoneThe New Framework in Theory and Practice ChatMagLevThe AI Way of Levitation Simple PV Power RegulatorBuild Your First, Fully Functional PV Energy Management System Cold-Cathode DevicesPeculiar Parts, the Series From Life’s ExperienceNostalgia Starting Out in Electronics……Looking at FETs CAN Bus Tutorial for the Arduino UNO R4Two UNO R4s Hop on the Bus! Infographics: Power & Energy Comprehensive Design and Development SupportArrow Engineering Services Comparing Power Density and Power Efficiency Aluminium Electrolytic CapacitorsInterference Potential in Audio Technology USB Test and MeasurementThe Fnirsi FNB58 The Pixel Pump Pick-and-Place ToolSimplifying Manual SMT Board Assembly HomeLab ToursNot So Long Ago, in a Far-Away Country... “In the world of ethics in electronics, even small steps can make a significant impact.” Ethics in ElectronicsThe OECD Guidelines and Germany’s Supply Chain Due Diligence Act Chadèche: Smart Ni-MH Charger/DischargerA Reader’s Project in Brief Err-lectronicsCorrections, Updates and Readers’ Letters

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. PbMonitor v2.0 UpdateBattery Monitoring with Improved Analog Design Audio Latency MeasurementA Standalone Tool for Evaluating Errors and Latency in Audio Transmission Square Wave vs. Bode PlotChecking the Performances of an Audio Device embedded world 2026 Clever Coding with AIAI in Software Development for Electronics Engineers QA403 Audio AnalyzerAffordable Precision for Audio Professionals and Hobbyists EasyGimbalAutonomous Camera Tracking with AI, Stepper and Servo Motors Sigfox Breakout Board (2)Sending Messages Circuit ProtectionControlling Overvoltages with TVS Diodes Emerging Battery Testing ApproachesA New Era of Diagnostics AudiotronicsA First Preamplifier CANopenTermAn Open-Source Tool That Brings CAN to Makers and Engineers Alike Stabilization of Operational AmplifiersAvoiding Feedback Instability Err-lectronicsCorrections, Updates, and Readers’ Letters Signal ConditioningTips and Tricks to Fit Voltage Ranges TDR Attachment for OscilloscopesLength, Short Circuit, Mismatch: Measure Cables Using Reflections! From Life's ExperienceLED It Be Speaker Oscillator and Resonance TesterA Fully Experimental Project for Your Speakers Elektor Community Perspectives on Test and Measurement ESP32 Audio Transceiver Board (Part 5)Audio Processing and Remote Control 2026: An AI OdysseyAI Has a Context Problem Battery Storage for Balcony Power PlantsSmall Batteries, Big Impact

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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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Practical Introduction to 3D Modeling from Enclosure to Front Panel Embedding a vintage component, creating a professional looking home for a circuit board, or even designing a complex apparatus complete with a chassis – these and many other challenges turn into a stimulating pleasure with FreeCAD. Once you have internalized the basic processes, there are virtually no limits to your imagination. Starting to use a new software is never straightforward – especially with a tool as versatile as FreeCAD. Manageable, but at the same time easily usable individual components provide the starting point in this book. Putting these components together later results in assemblies. In the FreeCAD universe, a workable trajectory is demonstrated. The described procedure is illustrative so the examples are easily applied to custom tasks. The devices were made by the author and illustrated with photos. Creating a 3D design is requiring some effort but the initial investment pays off soon. Besides the impressive spatial representation of the projects, the extracted drawings yield a solid base for documentation and production. Extended FreeCAD capabilities like the unfolding of sheet metal parts enormously add to efficiency and pushes models forward into practical assembly. Soon you will definitely not want to do without FreeCAD!

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Over 45 Builds for the Legendary 555 Chip (and the 556, 558) The 555 timer IC, originally introduced by the Signetics Corporation around 1971, is sure to rank high among the most popular analog integrated circuits ever produced. Originally called the IC Time Machine, this chip has been used in many timer-related projects by countless people over decades. This book is all about designing projects based on the 555 timer IC. Over 45 fully tested and documented projects are presented. All projects have been fully tested by the author by constructing them individually on a breadboard. You are not expected to have any programming experiences for constructing or using the projects given in the book. However, it’s definitely useful to have some knowledge of basic electronics and the use of a breadboard for constructing and testing electronic circuits. Some of the projects in the book are: Alternately Flashing Two LEDs Changing LED Flashing Rate Touch Sensor On/Off Switch Switch On/Off Delay Light-Dependent Sound Dark/Light Switch Tone Burst Generator Long Duration Timer Chasing LEDs LED Roulette Game Traffic Lights Continuity Tester Electronic Lock Switch Contact Debouncing Toy Electronic Organ Multiple Sensor Alarm System Metronome Voltage Multipliers Electronic Dice 7-Segment Display Counter Motor Control 7-Segment Display Dice Electronic Siren Various Other Projects The projects given in the book can be modified or expanded by you for your very own applications. Electronic engineering students, people engaged in designing small electronic circuits, and electronic hobbyists should find the projects in the book instructive, fun, interesting, and useful.

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. The AlertAlfred AI Security SystemPowered by a Raspberry Pi 5 and the Hailo 8L Module AI in Electronics DevelopmentAn Update After Only One Year Intro to AI AlgorithmsPrompt: Which Algorithms Implement Each AI Tool? Single-Board Computers for Artificial Intelligence ProjectsBackground and Overview From Sensor Data to Machine Learning ModelsGesture Detection with an Accelerometer and Edge Impulse Build a Leaky Integrate-and-Fire Spiking NeuronArtificial Intelligence Without Software ChatGPT for Electronic DesignDoes GPT-4o Do It Any Better? Bringing AI to the Edge with ESP32-P4 Exploring Speech Functions on Raspberry Pi ZeroWhen Overclocking Gives Freedom of Speech The Growing Role of Edge AIA Trend Shaping the Future Unlocking the Power of Edge AIA Conversation with François de Rochebouët of STMicroelectronics A VHDL Clock Made with ChatGPT AI’s Real ImpactSayash Kapoor on “AI Snake Oil” and More The Latest Stuff From BeagleBoardBeagleY-AI, BeagleV-Fire, BeagleMod, BeaglePlay and BeagleConnect Freedom Mosquito Detection Using Open Datasets and Arduino Nicla Vision AI Today and Tomorrow: Insights from Espressif, Arduino, and SparkFun Artificial Intelligence Timeline BeagleY-AIThe Latest SBC for AI Applications AI in FocusPerspectives from the Elektor Community Machine Vision with OpenMVCreate a Soda Can Detector A Conversation with the Digital MindChatGPT vs Gemini Skilling Me Softly with This Bot?Is the AI Revolution in the Electronic Field Failing Due to a Lack of Social Precision?

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