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Construisez votre station météo idéale ou explorez les données environnementales avec le monde entier. Avec de nombreux projets pratiques pour Arduino, Raspberry Pi, NodeMCU, ESP32 et autres cartes de développement. Les stations météo jouissent d’une grande popularité depuis des décennies. Tous les magazines d’électronique, qu’ils soient récents ou non, ont publié et publient régulièrement des articles sur la construction d’une station météo. Au fil des années, elles sont devenues de plus en plus sophistiquées et peuvent aujourd’hui être entièrement intégrées dans la maison intelligente. Ceci implique toutefois souvent une fidélité à un fabricant de produits de marque (coûteux) pour tous les composants. Cependant, avec votre propre station météo, vous pouvez facilement suivre le rythme et même capturer des relevés que les appareils commerciaux ne peuvent pas réaliser. Le plaisir ne manque pas : vous développerez de manière ludique vos connaissances en électronique, en cartes de développement de microcontrôleurs modernes et en langages de programmation. Pour moins de dix euros, vous pouvez collecter des données environnementales initiales et étendre votre système au fur et à mesure que votre intérêt grandit. Dans ce numéro Sur la route du vent et de la météo Écran météo OpenWeatherMap à affichage fluorescent Les composés organiques volatils dans l‘air que nous respirons Travailler avec les capteurs MQ : mesurer le monoxyde de carbone Détecteur de CO2 avec connexion IdO vers ThingSpeak Un arrosage automatique pour vos plantes Un climat intérieur sain : la température et l‘humidité de l‘air sont importants Thermomètre avec tubes Nixie Une maison météo rétro pour toute la famille Mesurez la pression atmosphérique et la température avec précision Un détecteur de coups de soleil Capteur maison pour la durée d‘ensoleillement Le smartphone l‘indique : brouillard ou bonne visibilité ? Détecter les tremblements de terre Les niveaux des cours d‘eau et des réservoirs Évaluer la valeur du pH de l’eau Détecter les rayonnements radioactifs Avec le GPS, vous savez où se trouve votre capteur Enregistrer les fichiers journaux avec horodatage sur des cartes SD LoRaWAN, The Things Network et ThingSpeak Exploiter la passerelle LoRaWAN pour le TTN Affichage géant à led avec prévisions météo

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. A Current Source for Testing (Z-)DiodesChecking Z-Diodes from 1 to 54 V @ 1 to 50 mA ESD Strap TesterA Bench Tool with Pass, Borderline, and Fail Indication Power Supply Transient Response TesterA Repeatable Step-Load Generator for Bench Power Supplies Euclidean Sequencer Without a MicrocontrollerTrigger Patterns and CV Sequences with Simple CMOS Logic LED Flashing Light for Gates and More with an Audible Alert Need PCBs? The Elektor PCB Service Has You Covered. Toothbrush TimerUsing a Tiny PIC A Contactless Magnetic Combination LockWith the AS5600 Rotary Position Sensor Low-Noise Battery-Powered PreamplifierFor Dynamic Microphones The Arduino Nano TestLabMeasurement, Control, and Regulation Rhythmic Bass LightEmphasize the Rhythm of Your Music Low-Cut FilterNo Risk of Audio Feedback on Your System Precise 1 Hz Square Wave Generator for BreadboardsA Reliable CMOS-Based Clock Source 555 Upside DownDuty Cycles Down to Zero From Halfgeleidergids to Circuit Specials65 Years of Electronics Innovation Electrical IsolationCAN Interface with Digital Isolator and Power Module SpongillatorA Sponge-Based Oscillator True Random Number GeneratorWith Integrated Chi-Square Test 3D Viewer for HTML pagesSimple, and Almost Without Code Programming with TLScriptA Scripting Language for Measurement, Testing, and Control Circuit Design: Tips from Experts FeedbackWhat Is It and Why Is It Important? One Board, Endless Ideas: Arduino UNO QFrom Retro Gaming to Real-Time Environmental Monitoring How to Fix a Donut Antenna Standby KillerA Real On/Off Switch for Your TV Battery TestingMeasuring Batteries with the Arduino Nano Power Supply for Audio Power AmplifiersA Good Power Supply Without Mains Hum Prototyping Boards for RFFast Setups with DIY Prototyping Boards T3 Surge ProtectionA Type 3 Spike Suppressor for Your Sensitive Equipment IoT Room Thermostat BoardWith ESP32-C3/S3-Based Xiao MCU module From Rigid to SmartFlexible and Printed Electronics — Between Vision and Industrial Reality

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From SRPP and Mu-Follower to OTL Designs Tube amplifiers suffer from distortion. Fortunately, circuits such as the SRPP amplifier, mu-follower, and beta-follower produce minimal distortion even at output voltages of 50 to 100 Vpeak. These designs are often published with errors. Without a sound understanding of the theory, it is easy to arrive at a flawed design. In the first section of this book, we investigate the origin of distortion, while in the second we investigate the design of and SRPP and a mu-follower. On the internet we can find the most exotic designs. Evaluating them teaches us that these designs often make matters worse rather than better. In the chapter on incorrect SRPPs and mu-followers, we sometimes see bizarre and misguided designs where using a simple single-triode amplifier would perform much better. Push-pull output stages also exist. A great number of them are examined, and their similarity to the SRPP is discussed. This is done especially with the help of the theory behind the OTL based on the ‘mother’ of all OTLs, the Philips HF303. Finally, attention is given to frequency characteristics and technical matters such as the supply voltage and the filament power supply. To illustrate these points, there are a few designs covering the subjects discussed. This book presents much new theory that has not been published before. It is often an eye-opener, showing that many things have a beautiful and unexpected simplicity.

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The Elektor Low-Noise Lab Power Supply is a fully analogue, adjustable, medium-power symmetrical bench supply that contains no switching or digital components. It provides an output voltage adjustable between 0 V and ±22 V, and an output current adjustable from 0 A to 1 A. Because it avoids any form of switching circuitry, the design delivers extremely low noise. To display both output voltages and currents, four miniature moving-coil panel meters are used. Most modern laboratory power supplies and AC adapters employ switch-mode techniques. Even the best examples inevitably exhibit high-frequency ripple and other switching artefacts on their output, which can interfere with the testing of sensitive analogue circuits and disturb low-level measurements. To overcome this, the concept here is a completely analogue power supply. Although less efficient than its switch-mode counterparts, the reduced efficiency is of little importance for test-bench use and ensures cleaner, more reliable measurement results. Because many analogue circuits require a symmetrical supply, this design delivers positive and negative output voltages of equal magnitude. A small amount of adjustment is available to compensate for any imbalance. Naturally, a variable current-limit function is also included. The kit includes the components required to build the power supply, except for the transformers. Specifications Output Voltage 0…+22 V, 0, −22 V Output Current 0…+1 A, 0…−1 A Noise −85 dBV, (at 0.95 A/20 V, B = 22 kHz) −84 dBV (at 0.95 A/20 V, B > 500 kHz) Ripple 50 µVRMS (at 950 mA/20 V, B = 22 kHz, mainly 100 Hz component) Included 3x PCBs: Regulator (PCB-1), Mains Filter (PCB-2) and Transformer (PCB-3) All the components except the AC transformers 4x moving-coil meters Additional parts for wiring (wires, banana sockets, IEC Power entry module, etc.) Not included The three AC transformers An enclosure Parts List For the Regulator PCB (240386-1) Resistors (250 mW, 1%) R1 = 12 Ω R2, R8, R37, R62 = 1 MΩ R3, R7, R10, R13, R17, R20, R22, R30, R35, R42, R45, R47, R55, R60 = 100 Ω, 600 mW R4, R5 = 4.7 kΩ R6 = 100 kΩ R9, R12, R14, R36, R38, R39, R61, R63, R66, R72, R78, R79 = 10.0 kΩ, 600 mW R11 = 9.76 kΩ, 600 mW R15, R40 = 44.2 kΩ, 600 mW R16, R41, R77 = 1 kΩ R18, R43 = 1.5 kΩ, 1 W, 5% R19, R44 = 470 Ω, 1 W, 5% R21, R46 = 330 Ω, 600 mW R23, R24, R48, R49 = 1.0 Ω, 1 W R25, R50 = 1 kΩ, 1 W, 5% R26, R28, R51, R53 = 1.000 kΩ 0.1%, 15 ppm/C R27, R29, R52, R54 = 10.00 kΩ 0.1%, 15 ppm/C R31, R56 = 1.2 kΩ, 1 W, 5% R32, R57 = 47 kΩ R33, R58 = 270 Ω R34, R59 = 27 kΩ R64, R69 = 12.0 kΩ R65 = 3.0 kΩ, 600 mW R67, R80 = 470 Ω, 600 mW R68, R70 = 6.8 kΩ, 600 mW R71 = 30.0 kΩ,, 600 mW R73, R74, R75, R76 = 10 MΩ P1, P2, P3 = 10 kΩ, 200 mW, 20%, potentiometer, 1 turns, single, lin., panel mount P4, P5 = 500 Ω, 500 mW, 10%, trimmer, 25 turns, 3296Y-1-501LF Bourns P6, P7 = 10 kΩ, 500 mW, 10%, trimmer, 25 turns, 3296Y-1-501LF Bourns Capacitors C1 = 100 nF, 50 V, 10%, ceramic X7R, LS 5 mm C2, C3, C6, C7, C30 = 10 µF, 63V, 20%, LS 2.5 mm, 3000hours@105°C C4, C5, C8, C9, C13, C14, C18, C19, C23, C24, C28, C29, C31, C32, C38, C39 = 100 nF, 250 V, 10%, PET, LS 7.5 mm C10, C20 = 47 nF, 100 V, 5%, PET, LS 5 mm C11, C21 = 10 nF, 100 V, 5%, PET, LS 5 mm C12, C22 = 220 µF, 35 V, 20%, 0.024 Ω, LS2.5/3.5 mm, Ir 3.4 A, 2000hours@125°C, polymer C15, C25 = 120 µF, 50 V, 20%, ESR 0.02 Ω, Diam. 10 mm max., LS 5 mm C16, C26 = 15 nF, 100 V, 5%, PET, LS 5 mm C17, C27 = 47 nF, 100 V, 5%, PET, LS 5 mm C33, C34 = 22 µF, 50 V, 20%, LS 2 mm, 10000 hours @ 105°C C35, C36, C44, C45 = 1 µF, 100 V, 10%, LS 5 mm, ceramic X7R C37 = 100 uF, 50 V, 20%. LS 3.5 mm C40, C41, C42, C43, C46, C47, C48, C49 = 1000 µF, 50 V, 20%, LS 5/7.5 mm, Ir 3.32 A, 10000hours@105°C, D 16 mm C50, C51, C52, C53 = 47 nF, 100 V, 10%, ceramic X7R, LS 5 mm Inductors L1, L2 = 4.7 µH, 3.2 A, 0.033 Ω, LS 5 mm, RLB0914-4R7ML Bourns L3 = Commom mode choke, 14.5 mH, 3 A, SSRH24NH-30145 Kemet Semiconductors D1, D2, D3, D4, D5, D9, D10, D11, D15 = BAT85, DO-34 D6, D7, D12, D13 = SR560, DO-201AD D8, D14, D16 = 1N4148, DO-35 D17 = Zenerdiode, 5.6 V, 0.5 W, DO-41 D18, D19 = 1N4004, DO-41 D20, D21 D22, D23 = V30100CI-M3/P, dual common cathode, TO-220 D24 = Zener diode, 30 V, 1 W, DO-41 LED1, LED2 = LED, red, T-1 (3 mm) LED3, LED4 = LED, green, T-1 (3 mm) TVS1, TVS2 = BZW50-33B, R6 T1, T2, T4 = BC337.25, TO-92 T3 = NJW0302G, TO-3P T5, T6, T8 = BC327.25, TO-92 T7 = NJW0281G, TO-3P T9 = BD139, TO-126 (SOT-32) IC1 = LM334Z, TO-92 IC2 = LM4040AIZ-5.0/NOPB, TO-92 (TO-226AA-3) IC3, IC4 = OPA2992IDR, SOIC-8 IC5, IC6 = OPA4992IDR, SOIC-14 IC7 = OPA992IDBVR, SOT-23-5 IC8 = LM339N, DIP-14 IC9 = LM317, TO-220 IC10 = LM337, TO-220 Others F1, F2 = 5×20 mm fuse, 1.6 A, fast acting HS1, HS2 = Heatsink MC33271 (for T3/T7), 2.7°C/W, PCB mount, height 63.5 mm K1, K4 = 3-way screw terminal block, LS 3.5 mm, max. 1.5 mm² K2, K3 = 3-way screw terminal block, LS 3.5 mm, max. 1 mm² M1, M3 = Moving coil meter, Range 30 V, type 91C4, 45×45 mm M2, M4 = Moving coil meter, Range 1 A, type 91C4, 45×45 mm² RE1 = Relay DPDT,5V, UA2-5NU Miscellaneous 3× 3-way screw terminal block, LS 3.5 mm, max. 1 mm² (for P1, P2, P3) 4× Pin header, 1×2, vertical, pitch 2.54 mm (for LED1, LED2, LED3, LED4) 4× Pin socket, 1×2, vertical. pitch 2.54 mm (for LED1, LED2, LED3, LED4) 2× Heatsink FK222SA220, 20°C/W, PCB mount (for IC9 & IC10) 2× Mica thermal pad for TO-220, 12×18×0.05 mm (for IC9 & IC10) 2× Insulating bushing IB 6, TO-220 (for IC9 & IC10) 2× Ceramic thermal pad, 23×20×2 mm (for T3 & T7) 2× PCB Fuse Holder, for 5×20 mm fuse, 10 A (for F1, F2) 2× Cover for PCB Fuse Holder, transparent (for F1, F2) 2× 2-way screw terminal block, LS 3.5 mm, max. 1 mm² (for M1 & M3) 2× 2-way screw terminal block, LS 3.5 mm, max. 1.5 mm² (for M2 & M4) 8× M3 solder lug, thickness 0.35 mm (for M1…M4) M4 solder lug, thickness 0.35 mm (to connect 4 mm banana connectors) Screened cable, 1 pair, 2×24 AWG/0.22 mm², 1 m (for P1, P2 & P3) IC socket, DIP, 14 contacts (for IC8) M3 washer, plain, steel M3 screw, 16 mm, steel, pan head M3 nut M3 spring washer 50 mm M3 standoff, steel, male-female 12 mm M3 standoff, steel, male-female 10 mm M3 standoff, steel, male-female M3 screw, 8 mm, steel, pan head For the Mains Fiter PCB (240386-2) Resistor R1 = 220 kΩ, 1 W, 500 V, 5% Capacitors C1, C2 = 470 nF, 305 VAC, Class X2, 11 × 27 mm max., LS 15/22.5 mm C3, C4, C5, C6 = 2.2 nF, 300 VAC, Class Y2, 13 × 4 mm, LS 10 mm, PP Inductors L1, L2 = Common-mode choke, 6.8 mH, 1.7 A, TDK B82732R2172B030 Semiconductor MOV1 = TVS varistor, 300 VAC, S14K300 (230 VAC, B72214S0301K101) and SK14K150 (150 VAC, B72214S0151K101) Others K1, K2 = 3-way screw terminal block, LS 7.62 mm F1 = Time-delay fuse, 0.5 A (230 VAC) or 1 A (115 VAC) Miscellaneous 1× Fuse holder, 5×20 mm, 10 A, 500 VAC 1× Transparent fuse cover 4× 10 mm M3 standoff, steel, male–female 4× M3 screw, 8 mm, steel, pan head 4× M3 nut For the Transformer PCB (240386-3) Resistors R1, R2 = 2.7 kΩ, 600 mW, 1% R3 = 10.0 kΩ, 600 mW, 1% Capacitor C1 = 220 µF, 50 V, 20%, Ø10 mm, LS 5 mm, 4000 h @ 105°C Transformers (not included in this kit!) TR1, TR2, TR3 = 2×7 V, 25 VA, PCB-mounted toroid, 70060K Talema Semiconductors D1–D4 = 1N4148, DO-35 D5, D6 = 1N4004, DO-41 D7 = Zener 5.6 V, 1.3 W, DO-41 LED1 = LED, red, T-1 (3 mm) IC1, IC2 = MOC8021M, CTR ≥ 1000%, DIP-6 Others F1, F2, F3 = 160 mA time-delay fuse (230 VAC) or 315 mA time-delay fuse (115 VAC) K1 = 2-way screw terminal block, LS 7.62 mm K2 = 3-way screw terminal block, LS 3.5 mm, max 1.5 mm² K3, K4 = 3-way screw terminal block, LS 3.5 mm, max 1 mm² RE1, RE2 = Relay DPDT, 5 A/250 VAC / 24 VDC Miscellaneaous 1× Pin header 1×2, pitch 2.54 mm + matching socket for LED1 3× Fuse holder 5 × 20 mm, 10 A, 500 VAC + transparent cover 3× M4 screw, 8 mm, pan head + washer for TR1-TR3 8× M3 screw, 8 mm, pan head + nut + washer 8× 10 mm M3 standoff, steel, male–female 2× IC socket, DIP-6 for IC1 & IC2 Additional Parts 1 m red insulated wire, stranded, 1.5 mm² 0.5 m blue insulated wire, stranded, 1.5 mm² 0.5 m black insulated wire, stranded, 1.5 mm², 0.5 m 2 m red insulated wire, stranded, D 0.56 mm (0.25 mm²) 2 m black insulated wire, stranded, D 0.56 mm (0.25 mm²) 0.5 m Multicore Cable, Flexible, 3 Core, 0.75 mm² (24 x 0.2 mm) Red banana socket Black banana socket Blue banana socket Green banana socket IEC Power Entry Module with switch, IEC C14 3 crimp terminals, FASTON, 4.75 x 0.81 mm 3 knobs Links Elektor Labs JumpStarter Page Article (Part 1) Article (Part 2)

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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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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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The Elektor Milliohmmeter Adapter uses the precision of a multimeter to measure very low resistance values. It is an adapter that converts a resistance into a voltage that can be measured with a standard multimeter. The Elektor Milliohmmeter Adapter can measure resistances below 1 mΩ using a 4-wire (Kelvin) method. It is useful for locating short circuits on printed circuit boards (PCB). The adapter features three measurement ranges – 1 mΩ, 10 mΩ, and 100 mΩ – selectable via a slide switch. It also includes onboard calibration resistors. The Elektor Milliohmmeter Adapter is powered by three 1.5 V AA batteries (not included). Specifications Measurement ranges 1 mΩ, 10 mΩ, 100 mΩ, 0.1% Power supply 3x 1.5 V AA batteries (not included) Dimensions 103 x 66 x 18 mm (compatible with Hammond 1593N-type enclosure, not included) Special feature On-board calibration resistors Downloads Documentation

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Examine your circuits with high precision and solder even the smallest SMDs and elements without any hassle. Features Multifunctional HDMI Digital Microscope features Full HD, comfortable headroom, improved ergonomy, multiple output signals with different resolutions. Tilt angle of the wide LCD monitor is adjustable. Comes with remote control. Can be used as stand-alone. Specifications Screen size 7 inch (17.8 cm) Image sensor 4 MP Video output UHD 2880x2160 (24fps)FHD 1920x1080 (60fps/30fps)HD 1280x720 (120fps) Video format MP4 Magnification Up to 270 times (27 inch HDMI monitor) Photo resolution Max. 12 MP (4032x3024) Photo format JPG Focus range Min. 5 cm Frame rate Max. 120fps (under 600 Lux Brightness & HDP120) Video interface HDMI Storage microSD card (up to 32 GB) Power source 5 V DC Light source 2 LEDs with the stand Stand size 20 x 12 x 19 cm Included 1x Andonstar AD407 Digital Microscope 1x Metal stand with 2 LEDs 1x Optical bracket 1x UV filter 1x IR remote 1x Switch cable 1x Power adapter 1x HDMI cable 2x Screws 1x Screwdriver 1x User manual Downloads Manual Model Comparison AD407 AD407 Pro AD409 AD409 Pro-ES Screen size 7 inch (17.8 cm) 7 inch (17.8 cm) 10.1 inch (25.7 cm) 10.1 inch (25.7 cm) Image sensor 4 MP 4 MP 4 MP 4 MP Video output 2160p 2160p 2160p 2160p Interfaces HDMI HDMI USB, HDMI, WiFi USB, HDMI, WiFi Video format MP4 MP4 MP4 MP4 Magnification Up to 270x Up to 270x Up to 300x Up to 300x Photo resolution Max. 4032x3024 Max. 4032x3024 Max. 4032x3024 Max. 4032x3024 Photo format JPG JPG JPG JPG Focus distance Min. 5 cm Min. 5 cm Min. 5 cm Min. 5 cm Frame rate Max. 120f/s Max. 120f/s Max. 120f/s Max. 120f/s Storage microSD card microSD card microSD card microSD card PC support No No Windows Windows Mobile connection No No WiFi + Measurement WiFi + Measurement Power source 5 V DC 5 V DC 5 V DC 5 V DC Light source 2 LEDs with the stand 2 LEDs with the stand 2 LEDs with the stand 2 LEDs with the stand Endoscope No No No Yes Stand size 20 x 12 x 19 cm 20 x 18 x 32 cm 18 x 20 x 30 cm 18 x 20 x 32 cm Weight 1.6 kg 2.1 kg 2.2 kg 2.5 kg

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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'architecture de processeur open-source RISC-V16 cartes et MCU à connaître un lecteur audio avec égaliseur basé sur un FPGAMixage audio numérique avec un Arduino MKR Vidor 4000 tête laser pour l’horloge de sable basé sur Raspberry Pi PicoDessiner avec la lumière participez au concours STM32 Edge AI système de contrôle environnemental multi-capteurs pour les plantesMesure sans fil de l'approvisionnement en eau et de la luminosité porte automatique contrôlée par l'IA et MaixduinoReconnaissance faciale avec une caméra l’électronique embarquée en 2024L’IA va redéfinir l’industrie Calcul en mémoire basé sur la charge chez EnCharge AI des opérations d'IA avec 10 fois moins d'énergie et des coûts divisés par 20 Une carte pour le développement et l’entraînement des modèles ML d’analyse des vibrations Elektor Mini-WheelieKit robot gyropode (robot autostabilisé) MCUViewerMCUViewer outil de débogage open source multiplateforme isolateur USB 2.0Isolation éléctrique pour les périphériques USB anticipation et actionApplication pratique de la maintenance prédictive SPoE – compatibilité électromagnétiquePaire unique avec Power-over-Ethernet à travers les yeux d'EMC rétro-techCréer un monde nouveau avec la télévision couleur surveillance ECGavec des modules Hexabitz et STM32CubeMonitor la bataille pour l’IA en périphérie HaLow atteint une distance Wifi record de 16 km à 900 MHz première puce embarquée CHERI RISC-V et programme d'accès anticipé la détection des incendies de forêt de troisième génération utilise des liaisons satellites sur le vifDélices et supplices du choix démarrer en électronique......Filtrage et contrôle de la tonalité Kit d'horloge quasi-analogiqueNouvelle version d'un classique d'Elektor une approche modulaire de test des capteursCarte de test de capteurs basée sur l'ESP32-S3 2025 : une odyssée de l'IAL'essor des modèles de fondation et leur impact sur l'accessibilité de l'IA Synthétiseur MIDI autonome Raspberry Pi (1)Préparation d'une plateforme pour des expériences d’IA en périphérie projet 2.0Corrections, mises à jour et courrier des lecteurs Le RISC-V AI, un processeur à tout faire : CPU, GPU, DSP, FPGA paroles de PDG : fraîcheur, silence et finesse programmation Dual-Core avec le Raspberry Pi PicoLe monde de la programmation parallèle

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The field of digital electronics is central to modern technology. This e-book presents fundamental circuits using gates, flip-flops and counters from the CMOS 4000 Series. Each of the 50 experiments has a circuit diagram as well as a detailed illustration of the circuit’s construction on solderless breadboard. Learning these fundamentals is best done using practical experiments. Building these digital circuits will improve your knowledge and will be fun to boot. Many of the circuits presented here have practical real-life applications. With a good overview of the field, you’ll be well equipped to find simple and cost-effective solutions for any application. The e-book is targeted essentially at students, trainees and anyone with an interest in and requiring an introduction to digital control electronics. Moreover, the knowledge gleaned here is the foundation for further projects in the field of microcontrollers and programming.

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PCBite is the complete solution handling your circuit board during the development phase. Powerful magnets together with a stainless base plate makes the system flexible, mobile and user friendly. The holder can easily be repositioned to handle circuit boards of varying shape and sizes. The probes are steady but yet flexible made for instant measurements or total hands-free operations together with your multimeter or prefered tool. Included 4x PCBite holder 2x Banana to DuPont test wires red/black 2x SP10 probe with red/black probe head and pin tipped test needles 2x Extra crown tipped test needle 1x Set of yellow insulation washers 1x Large Baseplate (A4) 1x Microfiber cloth Downloads User Guide

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Elektor GREEN and GOLD members can download their digital edition here. Not a member yet? Click here. USB Measurement AdapterTesting Current and Signal Quality of USB Ports 4...20 mA Current Output for Arduino UnoA Reliable, EMI-Insensitive Current Loop Interface Vacuum Cleaner Automatic ControlKeep Your Tools’ Work Area Clean DDS Generator with ATtiny Opamp-Tester V2New PCB – Now Also Suitable for SMDs 550-mW “Lamp” Audio AmplifierGet the Warm Sound of Vacuum Tubes With Ease Fuse GuardMonitoring a Fuse with a Flashing LED HQ RIAA PreamplifierGet the Most Out of Your Vinyl Records! Turntable Speed CalibratorAn Arduino-Based 100–120 Hz Strobe Light Generator Elektor Classics: video buffer/repeater Infrared Remote-Controlled DimmerControl Your Halogen or LED Floor Lamp Effortlessly and With Style How to Use switch…case on Strings in C++/Arduino IDE Magnet FinderWith a Simple Hall-Effect Sensor Raspberry Pi Smart Power ButtonA Solution for Raspberry Pi Up to Model 4 Essential Maker TipsProfessional Insights for Everyday Making Practical Projects with the 555 TimerDC Motor Control and Fast Reaction Challenges Basic AC-Load-On MonitorSave Energy with a Simple Device Power Banks in ParallelA Three-Day Continuous Power Solution VFO Up to 15 MHzAn Implementation With Raspberry Pi Pico Violin Tuner with ATtiny202 Elektor Classics: video amplifier for B/W television sets Capacitance Meter20 pF to 600 nF Quasi-Analog Clockwork Mk IITwo LED Rings for Hours and Minutes You Can Do Anything You Want(with the Arduino Ecosystem at Your Side) Neon Lamp Dice Elektor Classics: RTTY calibrator indicator Inspiring Hardware Designs for Your ESPs Elektor Classics: variable 3 A power supply RGB LEDs with Integrated Control CircuitLight with Precision: ICLEDs Set Standards Experiment: Towards a Mixed-Signal Theremin?Blending Modern Time-of-Flight Sensors With the Timeless XR2206 Analog Generator ESP32 Audio Transceiver Board (Part 1)SD Card WAV File Player Demo Infographics: Circuits and Circuit Design 2025 Small Audio MixerA Simple and Versatile Scalable Design Smart Staircase Light TimerSave More Money on the Energy Bill! Smarten Up Your ShuttersControlling Velux Hardware With an ESP32 and MQTT Solid-State Foot WarmerEnergy-Efficient Comfort Is the M5Stamp Fly Quadcopter the Next Tello? Boosting Wi-Fi Range of the ESP32-C3 SuperMiniA Simple and Effective Antenna Mod ZD-8968 Hot-Air Soldering StationA Budget-Friendly Workhorse or Just Hot Air? Parking Sensor TesterFinding Defects in the PDC System of a Car

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