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The UDP3305S-E is a high-performance programmable linear DC power supply. It has a clear LCD user interface, excellent performance indicators, a variety of analysis functions and communication interfaces. It can meet the diversified test needs of users. It aims to provide cost-effective DC programmable power supply equipment for teaching, scientific research, industry and other fields. LCD interactive interface Using a 4.3-inch high-definition display screen, it provides users with a man-machine interface with rich functions and simple operation, which can display the current set output voltage/current, actual output voltage/current and protection output voltage/current value of the power supply in real time. The functional interface is simple and comprehensive, easy to operate. One-key setting for series and parallel The series-parallel connection between CH1 and CH2 of the main channel can be realized without external connection, which simplifies the connection and makes the test easier. List/Delayer function With list and delay setting functions, it can set up to 2048 sets of data according to test requirements, and the number of cycles can reach 99999. It is used with waveform templates, which is very convenient for cycle testing and aging testing. Rich remote control interface Standard RS232 communication interface, Ethernet interface, Digital I/O and master and slave USB interfaces, can be controlled by remote connection to Ethernet, or through RS232 and USB, with the host computer software to achieve software control. Specificaties Type Linear DC power supply Channels 4 Total power 328 W Output voltage CH1/CH2: 0~30 VCH3: 0~6 VCH4: 5 V Output current CH1/CH2: 0~5 ACH3: 0~3 ACH4: 2 A Resolution 10 mV, 1 mA Setting accuracy 0.3% +20 mV<0.2% +5 mA Connectivity USB Device, RS-232, LAN, USB host, Digital I/O Inbegrepen 1x UDP3305S-E DC Power Supply 1x Power cord 1x USB cable Downloads Datasheet User manual Programming manual Software V1.0 Firmware V1.10

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Inhalt 30 Watt Röhrenverstärker mit variablem Dämpfungsfaktor 50 Watt Super Trioden Verstärker 300 Watt Röhrenendstufe Digibias: Digitale Ruhestrom-Einstellung und -Überwachung Paper Hatt: Klein, aber fein Origami M und C: Ein Subwoofer-Entwurf für zwei Anwendungsbereiche ScanSpeak Vertigo: Kompaktes Dreiwegesystem Intertrechnik Elip1: Elegante 2-Wege-Kombi zum kleinen Preis Visoton Clou: Prinzip Acoustical Tripath Pro HiFi Fréjus: Für Freunde der gehobenen Lautstärke ASE Someo: Kompakte Koaxial-Kombination ASE Someo-Sub: Aktiver Dipol-Woofer mit Linear Array Transducer MinimA: Ein minimalistischer 120 W Klasse-B-Verstärker Symmetrischer Vorverstärker/Aktives Filter: Ein Standardrezept für verschiedene Anwendungen RelaiXed: Symmetrischer Vorverstärker mit Relais

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. AI Tools for Hardware PrototypingWhat Helps, What Does Not, and Where the Engineer Still Has to Sit ZSWatch — From Idea to ProductPart 1: A Completely Open Smartwatch Three-Way Tone ControlHigh-End — For That Little Bit Extra electronica Fast Forward 202610 Years of Innovation Microcontroller PrototypingAn Overview of Popular Boards Prototyping BreadboardsPeculiar Parts, the Series Designing for OrbitA Maker’s Guide to COTS Selection, Radiation Resilience, and Mission Architecture Thermal Management for Reliable ElectronicsWhen Every Degree Counts From Concept to GadgetBuilding Embedded Systems That Ship Understanding the EU Cyber Resilience ActWhat the CRA Demands and How to Meet It: A Guide for Embedded Engineers Lusight: Printed Displays You Can Reveal with Your PhoneDiscover What Is Inside the Badge on the Cover of Elektor’s electronica Edition Teaching a Robot Arm to See and MoveAI-Driven Manipulation Using a 3D-Printed Robot Loop Antenna with RF BricksPart 2: Signal Processing From Prototype to ProductionPractical Lessons from the Elektor Community Project UpdatesFeedback, Ideas, Corrections Handheld Audio GeneratorA Reference Signal Source for Quick Audio Systems Setup AudiotronicsMore Distortion, and a Level-Matching Amplifier 2026: An AI OdysseyWhen AI Starts Building AI Wireless Workshop (2)Radio Modules Unlocked: 2.4-GHz nRF24L01P Transceiver The Digital Path Building an Open-Source SmartwatchDaniel Kampert on ZSWatch, Open Hardware, and Engineering Trade-Offs How to Prepare for Professional SMD Assembly Engineering Beyond the BenchSystem Integration, Troubleshooting, and Real-World Testing Elektor at 65Projects from Novembers and Decembers Past Avionics Instrument SimulatorESP32-S3-Based, with Round HMI Display

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AI Projects for the Raspberry Pi with the AI HAT+ Edge AI is transforming everyday devices by putting intelligence where it matters most: directly inside the hardware. With on-device inference, a camera can recognize a visitor instantly, a phone can translate speech without streaming audio to the cloud, and a wearable can detect anomalies in real time—fast, private, and reliable even when the network disappears. This book is your practical guide to building exactly those kinds of systems with the Raspberry Pi AI HAT+ and the Hailo-8L accelerator. You’ll start with clear foundations: core AI and machine-learning concepts, how neural networks work, and what truly distinguishes Edge AI from cloud AI—plus an honest look at ethical considerations and future impacts. Then it’s straight to hands-on physical computing. Step by step, you’ll set up Raspberry Pi OS, power and cooling, and develop in Python using the Thonny IDE. You’ll learn GPIO basics with lights and servos, mount the AI HAT+ hardware, install and verify the Hailo software stack, and connect the right camera—official modules or USB webcams, even multiple cameras. From your first pipeline to real projects, you’ll run person detection, pose estimation, segmentation, and depth estimation, then level up with YOLO object detection: smart alerts, guest counters, and custom extensions. You’ll even connect vision to motion by combining gesture recognition with servo-driven mechanisms, including a robotic arm. With troubleshooting tips, hardware essentials, and a practical Python refresher, this book turns Edge AI from buzzword into buildable reality.

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Make your project dreams come true: an odometer for the hamster wheel, a fully automatic control of your ant farm with web interface, or the Sandwich-O-Mat – a machine that toasts and grills sandwiches of your choice. With the Arduino and the DIY or Maker movement, not only did entry into microcontroller programming become child's play, but a second development also took place: Resourceful developers brought small boards – so-called shields or modules – to the market, which greatly simplified the use of additional hardware. The small modules contain all the important electronic parts to be connected to the microcontroller with a few plug-in cables, eliminating the need for a fiddly and time-consuming assembly on the plug-in board. In addition, it is also possible to handle tiny components that do not have any connecting legs (so-called SMDs). Projects Discussed Arduino seeks connection BMP and introduction to libraries, I²C Learn I/O basics with the multi-purpose shield I²C LCD adapter and DOT matrix displays LCD keypad shield Level converter W5100: Internet connection I/O expansion shield Relays and solid-state relays The multi-function shield: A universal control unit Connecting an SD card reader via SPI Keys and 7-segment displays 16-bit ADC MCP4725 DAC 16-way PWM servo driver MP3 player GPS data logger using an SD card Touch sensor Joystick SHT31: Temperature and humidity VEML6070 UV-A sensor VL53L0X time-of-flight Ultrasonic distance meter MAX7219-based LED DOT matrix display DS3231 RTC Port expander MCP23017 433 MHz radio MPU-650 gyroscope ADXL345 accelerometer WS2812 RGB LEDs Power supply MQ-xx gas sensors CO2 gas sensor ACS712 current sensor INA219 current sensor L298 motor driver MFRC522 RFID 28BYJ-48 stepper motor TMC2209 silent step stick X9C10x digital potentiometer ST7735 in a color TFT display e-Paper display Bluetooth Geiger counter SIM800L GSM module I²C multiplexer Controller Area Network

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This book discusses the basic components of any alarm system. All alarm systems have two basic functions. First, they monitor their environment looking for a change such as a door or window opening or someone moving about in the room. Second, they alert the legal owner or user to this change. The system described in this book uses a scanning type software to detect intruders. It behaves like a guard dog, pacing up and down the fence line on the lookout for either an intruder or a familiar person. If you have an alarm key, you can disarm the system and enter. With the scanning method, the software is easy to write and explain. It can scan eight alarm zones plus two special fire zones in about one second. You don’t have to be an electrical engineer to install an alarm system, just a decent carpenter, painter, and plasterer! Because this alarm system runs on 12 volts, you don’t have to be a licensed electrician either to install it. The alarm system presented here uses Python software on the Raspberry Pi combined with some elementary electronic circuits. The code described in the book, as well as CAD files and a bill of materials for the alarm panel, are available for free downloading. The book provides the reader with examples of typical configurations coming straight from the author‘s experience. After reviewing the hardware components typically used in common alarm systems, the author shows how to plan one yourself. To implement a modular alarm, no matter if it is for a single house or for a business or restaurant, the book shows how to skillfully combine a Raspberry Pi with small auxiliary electronic circuits. These are not installation instructions but food for thought that will enable readers to find a solution to their needs.

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Plot, Cut, Drill, Mill and Laser with the Z99 This book covers the construction, hardware, software, and operation of the Z99 – CNC machine. This is a multifunctional 4-axis machine for home construction. The capabilities of the Z99 machine include: large-format schematic plotting PCB plotting with etch-resist pens schematic plotting with conductive-ink pens letter cutting out of vinyl paper cutting PCB/substrate drilling PCB/substrate milling text milling laser engraving laser cutting of solder paste masks By making the support software available as freeware, readers of the book are challenged and encouraged to develop new applications for the Z99. The machine would not be of much use if the user has no option to create suitable files for the designs in mind. A large part of this book is dedicated to creating source files in a variety of freeware software packages, including Inkscape, DesignSpark PCB, KiCad, and FlatCAM. The book is also useful for readers keen to comprehend and then master the basic structure of HPGL, Gerber, Drill, and G-code files, as well as to have a go at deciphering them using software.

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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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USB-S/PDIF-INTERFACEdigitale audio-uitgang voor computer, laptop, tablet of smartphone MULTITASKING MET DE ESP32 (4)binaire semaforen TIMER VOOR HOOFDTELEFOONVERSTERKER DRAADLOZE TEMPERATUURSENSOR VOOR NIXIE BARGRAPH THERMOMETERmultifunctionele oplossing met ontwerptruc MULTITASKING MET DE RASPBERRY PIvoorbeeld: controller voor verkeerslichten OPEN-NETWERK WEERSTATION MK2deel 2: software DOMOTICA HELEMAAL NIET MOEILIJKmet ESPHome, Home Assistant & MySensors DE GEHEUGEN-BEELDBUISvreemde onderdelen AI VOOR BEGINNERS (3)een eigen neuraal netwerk PIC’S PROGRAMMEREN: VAN DE GROND AFeen sinus in assembler IKEA-HACKeen goedkope IKEA-lamp ‘tunen’ met NeoPixel-LED’s en WLAN LAAT JE HOBBYPROJECT NIET IN EEN HOEKJE VERSTOFFENaanbodzijde-tijdmanagement en spiraalontwikkeling ALLE BEGIN......hoeft niet zo moeilijk te zijn OOST WEST LAB BESTeen blik in het allerheiligste, waar interessante projecten worden geboren DE 8-BIT MICROCONTROLLER – EN DAARNAvraaggesprek met Tam Hanna WIE HET KLEINE NIET EERTuit de ideeënbus van Elektor REVIEW: OWON OW18E BLUETOOTH-MULTIMETER INTERACTIEFcorrecties & updates || vragen & antwoorden UIT HET LEVEN GEGREPENloodvrij solderen en Europese regelneverij VEELBELOVEND PROJECT: NIEUWE LCR-METER 50 HZ...2 MHZprecisie en gebruiksgemak ERROR ANALYSIStips en trucs: FMEA, grote stromen en meer DEVELOPER’S ZONEtips & trucs, vakkunstigheden en andere nuttige informatie REVIEW: SIGLENT SDL1020X-E ELEKTRONISCHE BELASTING HOOGSPANNINGSVOEDING MET KARAKTERISTIEKENSCHRIJVERspanningen tot 400 V instellen en karakteristieken van buizen en transistoren meten HEXADOKU SEPTEMBER/OKTOBER 2020 ANALOGE ELEKTRONICA ONTWERPENcase-study #2 – deel 1: theorie van analoge filters SCHEMA’S TEKENEN

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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. Mini-zonnevoedingzon in, 3,3 V uit Solid-state stereo-audioschakelaarklikvrij en zonder bewegende onderdelen Grote RGB-digitmet through-hole WS2812 LED’s Microfoon-voorversterker met 48V-fantoomvoedingvoor podcasting en pro-audio Blokgolfgeneratoren met regelbare duty cycle en frequentiesimpele schakelingen met CMOS- en TTL-IC’s Eenvoudige dynamiekcompressorsofte aansturing, warm geluid Simpel elektronisch slot Actieve gelijkrichtervoor 2...40 V bij maximaal 3 A met tegenstroomonderdrukking Actieve boxen in- en uitschakelen Ongebalanceerd/gebalanceerd-convertermet RF-filter en DC-bescherming 2023: een AI-odysseewaar komt het vandaan en waar gaat het naar toe? Snelheidsregelaar voor ventilatormet handmatige en thermostaatmodus Laatste nieuwtjes van Arduino Project Hubnieuwe projecten uit de community Overbelastingsmonitorbewaakt netsnoeren Transistorloos knipperlicht in het donkeroscillator met alleen tweedraads onderdelen Morsecode-generatorvoor gebruik als baken of leermiddel! Programmeerbare video-DACvoor elk formaat tot RGB888 Kleintje klavierzonder bewegende onderdelen Dubbel-dobbel zonder microprocessordubbele dobbelsteen op een enkele print – plus enkele ontwerptrucs Elektronische vogelverschrikker Amusante, inspirerende en verbazingwekkende schakelingen LC/LP/HA-thermometernauwkeurige metingen en een binair display THD-generatorvervorming, maar dan opzettelijk Overtemperatuur-indicator met thyristorelektronische onderdelen ongebruikelijk gebruikt Een PTC-flipflop Sociale vogeleen tsjilpende Elektor Klassieker Neonlamp plus microcontroller Temperatuurgestabiliseerde IC-stroombronneutraliseer de temperatuurdrift van deze driebeners Regelbare tweede-orde hogetonen-boostergehoorsteuntje voor ouderen Edwin komt naar huisherinneringen na 53 jaar Eénarmige bandieteen eenvoudige, leuke, nostalgische en leerzame Elektor-klassieker! Eenvoudige digitaal gestuurde variabele weerstand Lekdetectorbeveiligt en alarmeert bij lekkages Eco-timer met automatische uitschakelingverbruikt niets in uitgeschakelde toestand! ChatGPT en Arduino Zenermetermeet de Z-spanning van Z-diodes ? 100 V Servotester ESP32 Windows-controller met gratis software Analoge en mixed-signal IC’s van Microchipzuinige signaalverwerking Interfacenormenfilter en overspanningsbeveiliging voor de I²C-bus Li-Ion accumonitorrestlading-indicator geeft visuele feedback PS/2-muis als draai-encoder (en meer...) Simpele schemerschakelaarvoor bestaande lampen of installaties Controller voor waterpompbereid je voor op hoogwater Kerstbal met FM-zonneradiomeer heb je voor de kerst niet nodig Trillingssensor met relaistik of schud om in te schakelen Doorgangstestergevoelig en niet storend In- en uitschakelen met een drukknop Regeling voor mini-boor (2023)een ontwerp uit 1980 herzien Digitale trillingssensorzet trillingen om in nauwkeurig getimede pulsen Ompoolbeveiliging met kleine spanningsval Goedkope frequentiestandaard Kleine DCF77-simulatornauwkeurige fake-tijdstandaard De Lilygo T-PicoC3combineert RP2040 en ESP32-C3 met een full-color TFT-display Hexadoku

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Programmierung in Assembler und C am Beispiel der ATtiny-Familie Dieses Buch bietet einen eingehenden Blick auf die 8-Bit-AVR-Architektur in ATtiny- und ATmega-Mikrocontrollern, hauptsächlich aus der Sicht der Software und der Programmierung. Erforschen Sie die AVR-Architektur unter Verwendung von C und Assembler in Microchip Studio (früher Atmel Studio) mit ATtiny-Mikrocontrollern. Lernen Sie die Details der internen Funktionsweise von AVR-Mikrocontrollern kennen, einschließlich der internen Register und des Speicherplans von ATtiny-Bausteinen. Programmieren Sie ATtiny-Mikrocontroller mit einem Atmel-ICE-Programmiergerät/Debugger oder verwenden Sie ein preiswertes Hobby-Programmiergerät oder sogar einen Arduino Uno als Programmiergerät. Die meisten Code-Beispiele können mit dem Microchip Studio AVR-Simulator ausgeführt werden. Lernen Sie, Programme für ATtiny-Mikrocontroller in Assembler zu schreiben. Erfahren Sie, wie Assemblersprache in Maschinencodebefehle umgewandelt wird. Finden Sie heraus, wie Programme, die in der Programmiersprache C geschrieben wurden, in Assemblersprache und schließlich in Maschinencode umgewandelt werden. Verwenden Sie den Microchip Studio Debugger in Kombination mit einem Hardware-USB-Programmierer/Debugger, um Assembler- und C-Programme zu testen oder verwenden Sie den Microchip Studio AVR-Simulator. ATtiny-Mikrocontroller im DIP-Gehäuse werden verwendet, um eine einfache Nutzung auf Breadboards zu ermöglichen. Erfahren Sie mehr über Timing und Taktimpuls in AVR-Mikrocontrollern mit ATtiny-Bausteinen. Werden Sie zu einem AVR-Experten mit fortgeschrittenen Debugging- und Programmierfähigkeiten.

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310 Circuits – is the 11th volume in Elektor’s renowned ‘Three Hundred’ series. 310 circuits, tips and design ideas in one book form a treasure trove for every area of electronics: audio and video, hobby and modelling, RF techniques, home and garden, test and measurement, microcontrollers, computer hardware and software, power supplies and chargers – plus of course everything else that does not seem to belong in any of these categories. 310 Circuits – contains many complete solutions as well as useful starting points for your own projects. Both categories and anything in between represent a veritable fountain of inspiration for cultivating your own ideas and learning about electronics. 310 Circuits – is a compilation of articles from ‘Summer Circuits’ editions for the years 2006, 2007 and 2008. ‘Summer Circuits’ covers the publication months July and August of Elektor magazine. 310 Circuits – is a must-have book for every creative electronics enthusiast, be it professional, enthusiast or student. 310 Circuits – for the first time has a section exclusively on robots and robotics.

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