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)
The OWON SDS1102 is an affordable benchtop digital oscilloscope that combines solid performance with essential measurement features. This 2-channel oscilloscope offers a 100 MHz bandwidth, a 1 GS/s sampling rate, a 7-inch LCD display, and a 10 kpts memory depth, making it a practical choice for everyday electronics testing, troubleshooting, and education.
The SDS1102 features a simplified trigger system with level and edge triggering, making it easy to capture and analyze common signals. It is designed for applications that do not require deep memory or advanced trigger functions, offering a straightforward and cost-effective solution for basic signal analysis.
Features
Bandwidth: 100 MHz
2 channels
Sample rate: 1 GS/s
Ultra-thin body
7-inch high-res LCD
SCPI and LabVIEW supported
Specifications
Bandwidth
100 MHz
Horizontal Scale (s/div)
5 ns/div – 1000 s/div
Channel
2
Vertical Sensitivity
5 mV/div – 5 V/div (at input)
DC Gain Accuracy
3%
Vertical Resolution (A/D)
8 bits (2 channels simultaneously)
Input
Input Impedance
1 MΩ, 10 pF
Input Coupling
AC, DC, GND
Max Input Voltage
±400 V, CATI, CATII
Passive probes
х1; х10
Probe Attenuation Factor
х1; х10; х100; х1000
Trigger System
Trigger Mode
Auto, Normal, Single
Trigger Type
Edge, Video
Edge Trigger Source
CH1, CH2
Video Trigger
Sampling Type
Real-time
Sample Rate
1 GS/s
Equivalent Sample Rate
No
Wavelength
10K pts
Interpolation
sin(x)/x
Measurement and Mathematical Treatment System
Automatic Measurement
Vpp, Vavg, RMS, Frequency, Period, Vmax, Vmin, Vtop, Vbase, Width, Overshoot, Pre-shootRise time, Fall time, +Width, -Width, +Duty, -Duty, Delay A→B, Delay A→B, area, cycle area
Math Functions
Addition, Subtraction, Multiplication, Division, FFT
General Characteristics
Display type
7" color LCD
Display Resolution
800 x 480
Power
100-240 V, 45-440 Hz, <15 W
Dimensions
301 x 70 x 152 mm
Weight
1.1 kg
Included
1x OWON SDS1102 Oscilloscope
2x Oscilloscope probes
1x Probe adjust
1x Mains power cord
1x USB cable
1x CD-Rom
1x Quick guide
Downloads
Quick Guide
Manual
PC Software
SCPI Commands
Designing, Wiring, and Controlling
Build Your Own Coffee Roaster is a practical guide to constructing and operating the Cobra Smart Roaster and its companion Open Roaster Controller (ORC).
The e-book walks the reader through every stage of the build, from assembling the powerhead and wiring the system to installing and configuring the controller. Along the way, you’ll learn how to use the Raspberry Pi to bring precision and flexibility to your roasting process.
Clear, step-by-step chapters cover:
Powerhead construction and required components
Low- and high-voltage wiring
Installing the ORC, network setup, and using the web interface
Roasting coffee with the Cobra in different setups, including hand-stir and bread-machine roasting
Advanced topics such as manual mode, fixed profiles, Artisan-Scope connections, and ORC system programming
A complete parts list, practical guidance throughout, and concise explanations make this e-book a useful reference for anyone interested in building, modifying, or understanding their own coffee-roasting system.
Elektor GREEN en GOLD leden kunnen deze uitgave hier downloaden.
Nog geen lid? Klik hier om een lidmaatschap af te sluiten.
PIO programmeren op de Raspberry Pi PicoNegen instructies, veel mogelijkheden
AI buiten de browser brengenAI-CLI's gebruiken voor het coderen, compileren en valideren van embedded projecten
De Scrutiny DebuggerDebuggen, visualiseren en testen van code in Embedded C/C++
Sigfox breakout board (1)Een zelfgebouwde radio BoB
Low-Noise voeding (2)Constructie, montage en praktische implementatie
Eenvoudige signaalgenerator met de RP2040Analoge en digitale signalen voor ongeveer €10
De toekomst van slimme huizen verkennen met Matter en Edge AIBieden de nieuwste updates van Matter en de opkomst van Edge AI technici eindelijk de tools om de intelligente, slimme huizen te bouwen die gebruikers zijn beloofd?
Differentiële druksensorenVoorspellend onderhoud in HVAC-systemen
Security by designTechnische basisprincipes beperken storingen
Embedded security is niet langer optioneel
CRA en PQC herzien prioriteiten voor embedded securityWaarom zelfs kleine IoT- en industriële bedrijven een upgradeplan nodig hebben
embedded world 2026Een interview met Benedikt Weyerer, Executive Director embedded world
Praktijkervaring met I3CGebruik van hardware van ST en Microchip
Het BLEnky-projectSnelle prototyping voor Bluetooth Low Energy toepassingen
Pulsbreedtemodulatievan een eenvoudige aan/uit-thermostaat naar een rimpelloos DC-signaal
AudiotronicaOorstrelende elektronica voor zelfbouw
Uit het leven gegrepenRead the f...ing manual!
ESP32 audio transceiver board (Deel 4)Afstemmen van de kloksignalen en een bekabelde versie
2026: An AI OdysseyDe kater van Vibe-Coding in 2025
Symmetrische DC-belastingStatische of dynamische en symmetrische gelijkstroombelasting
Gezichten tellen met MaixCAMEen eenvoudige methode om de omvang van het publiek vast te leggen
COMMANDE DE MOTEURS : LES PONTS EN HIntroduction aux moteurs CC, pas à pas et sans balais
L?ÉQUIPE D?ELEKTOR LABNotre approche, nos outils préférés et plus encore
RASPBERRY PI COMME TÉLÉCOMMANDE KVMTest du logiciel Pi-KVM
IQAUDIO CODEC ZEROCarte son au format Raspberry Pi Zero
LE PROJET PIKVM ET SES ENSEIGNEMENTSEntretien avec Maxim Devaev
VÉHICULE AUTONOME AVEC LIDAR 2DUn ESP32 Pico interprète les données du lidar
LE RASPBERRY PI ZERO 2 W PASSE AU QUADRICOEUR
NOTES DU FORUM MONDIAL DE L?ÉLECTRONIQUE ÉTHIQUE 2021
COMMANDE DE MONTEURLa commande des moteurs devient simple
MOTEURS ÉLECTRIQUES DE GRANDE TAILLEPrincipes de base et informations utiles
PRISE EN MAIN DU MICROCONTRÔLEUR ESP32-C3 RISC-V
PROTÉGEZ-VOUS ET PROTÉGEZ LES AUTRES !Interrupteur général pour paillasse (DIY)
CRÉATION D?INTERFACES GRAPHIQUES EN PYTHON ÈME 2Mon nom n?est pas Bond
GAGNANTS DU CONCOURS FAST FORWARD 2021 DU SALON PRODUCTRONICA
TESTEUR DE SERVO POLYVALENTVérification du comportement en l?absence de fiche technique
MODBUS SANS FIL (PARTIE 2)Logiciel de la carte Modbus TCP sans fil
VOYAGE DANS LES RÉSEAUX NEURONAUX (3E PARTIE)Les neurones pratiques
DANS L?INTIMITÉ D?UN PROCESSEUR OPEN SOURCEExtrait : résultats des FPGA Lattice et Xilinx
DÉMARRER EN ÉLECTRONIQUE... (10)Toujours la bobine, mais avec ses applications pratiques dans l?audio.
PROJET 2.0Corrections, mises à jour et courriers des lecteurs
DE LA COULEUR AUSONComment exploiter un capteur de couleurs avec l?I2C
SOURCEMÈTRE BATTLAB-ONEMesurer et optimiser la durée de vie des batteries des appareils IdO
TRACEUR DE FUITES À LA TERRE SIMPLEMesure de l?isolation du secteur
PAUVRETÉ ET ÉLECTRONIQUEQuand le courant économique passe mal
HEXADOKUcasse-tête pour elektorniciens
52 Volumes on USB – Now incl. Volume 2025!
NEW: For articles from the year 2000 onwards, there is now a separate download option for additional materials such as PCB layouts, Gerber files, and software!
This USB stick (64 GB) is loaded with all the Elektor magazine English editions (as PDFs) from 1974 to 2025. Elektor engineers, authors, and editors aim to inspire you to master electronics and computer technology by presenting professionally designed circuits that are easy to build.
We also cover the latest developments in electronics and information technology. With the Elektor Archive on a USB stick, you can browse our previous English editions at your convenience and learn about MCU-based projects, robotics, electronics testing, embedded programming, analog techniques, and much more.
All the Elektor magazine editions are stored as PDFs on a 32-GB USB stick (USB 3.0). The 10,000+ articles have been classified by date of publication (month/year), and a comprehensive index enables you to search the entire USB stick. Subject areas include:
Audio & video
Computers & microcontrollers
Radio, hobby & modelling
Home & garden
Power supplies & batteries
Test & measurement
Software
And everything else that doesn’t fit in one of these categories.
Elektor GPT
Elektor GPT is an AI-powered tool that helps users navigate through the decades-long Elektor archive. Using advanced search algorithms and natural language processing, Elektor GPT quickly finds articles, projects, and other resources from the archive.
Specifications
Storage
64 GB
Interfaces
1x USB-A1x USB-C
System requirements
PC with Adobe Reader 7.0 or higher
Web browser
From Simple Ciphers to Secure Systems
Understanding how to apply cryptography on modern microcontrollers is essential for building secure, reliable, and trustworthy systems. This book explains cryptography in the context of embedded hardware, from classical ciphers that illustrate core principles to modern techniques such as AES for practical high-security applications.
By combining mathematical theory with real-world microcontroller implementations, readers learn not only how cryptography works, but also how to implement it effectively on systems with limited processing power and memory. The book is intended for students starting out in cryptography, hobbyists securing personal projects, and engineers looking for a structured guide to embedded security.
The book covers these key topics in applied cryptography:
Classical ciphers on Arduino Uno and Raspberry Pi Pico, with full programs: Spartan Scytale, Hebrew Atbash, Caesar, ROT13, Alberti Disk, Vigenère, Affine, Polybius, Playfair, Beaufort, Ottoman Codebook, and One-Time Pad.
Hacking classical ciphers using microcontrollers, with examples.
Pseudo-random (PRNG) and true random number generation (TRNG) on microcontrollers.
Symmetric-key cryptography with full programs: DES and AES-128/256.
Memory and speed constraints of cryptography on microcontrollers.
Asymmetric cryptography: public/private keys, digital signatures, key distribution and derivation (KDF), RSA, and SHA-256 implementations.
A complete secure communication program using RSA and AES-256.
A glossary of commonly used cryptography terms.
Le téléchargement intégral de ce numéro est disponible pour nos membres GOLD et GREEN sur le site Elektor Magazine !
Pas encore membre ? Cliquez ici.
carte émetteur-récepteur audio ESP32 (2)Transmission audio sans fil
émetteur AM par inductionUtiliser les PIO du Pico dans un croquis Arduino
les protocoles sans filUn guide technique
suivi de satellites avec LoRaTinyGS, le réseau open source qui capte les données spatiales
télécommande par sms compatible 4GContrôlez votre équipement à distance
sonde haute vitesseMesure à haute impédance jusqu’à 200 MHz
sur le vifKafka
KrakenSDR
tests de performance avec le RP2350Pico 2 : une vraie amélioration ?
mesures de champ électrique sans contact (2)Un vibromètre laser pour l’analyse des vibrations de la membrane
quartz et oscillateursAméliorer la précision des quartz grâce au choix des condensateurs
démarrer en électroniqueCI audio originaux
se lancer dans le codage d'un projet DIY
SPECTRAN® V6 MobileAnalyseur de spectre temps réel modulaire et configurable pour des mesures fiables sur l’ensemble des plages de fréquences
l’avenir de l’IA repose sur le siliciumEntretien avec Anastasiia Nosova
nœud de capteurs autonome v2.0 (architecture du système)Plateforme de mesure autonome alimentée par énergie solaire, avec GPS intégré, LoRaWAN et plus encore
positionnement précisTests du sondage de canal Bluetooth
développement logiciel piloté par les tests
voiture miniature contrôlée par SmartphoneWi-Fi + ESP32 + Smartphone = contrôle à distance
2025 : une odyssée de l’IAModèles de raisonnement en IA : la révolution de la chaîne de pensée
contrôleur de charge solaire avec MPPT (3)Logiciel et mise en service
caméra Web Raspberry Pi ZeroStreaming avec VPN ZeroTier
Affordable solutions with the ESP8266 and 3D printing
If you are looking for a small yet powerful IoT device, you are likely to come across the ESP8266 and compatible products on the market today. One of these, the Wemos/Lolin D1 Mini Pro board strikes a remarkable balance between cost and performance. A small and very affordable prototype board, the D1 Mini Pro stands out with its WiFi functionality and a 16-Mbytes flash memory for easy creation of a flash file system. In addition, there are sufficient input and output pins (only one analog input though) to support PWM, I²C, and One-Wire systems to mention but a few. The book describes the operation, modding, construction, and programming of home appliances including a colorful smart home accessory, a refrigerator/greenhouse controller, an AC powerline monitor, a door lock monitor, and an IKEA Trådfri controller.
As a benefit, all firmware developed for these DIY, "IoT-ized" devices can be updated over-the-air (OTA).
For most of the designs in the book, a small printed circuit board (PCB) and an enclosure are presented so readers can have a finished and attractive-looking product. Readers having – or with access to! – a 3D printer can "print" the suggested enclosures at home or in a shop.
Some of the constructions benefit from a Raspberry Pi configured as a gateway or cms server. This is also described in detail with all the necessary configuring.
You don’t need to be an expert but the prerequisites to successful replication of the projects include basic skills with PC software including the ability to surf the Internet. In terms of hardware, you should be comfortable with soldering and generally assembling the PCBs presented in the book.
All custom software written for the IoT devices, the PCB layouts, and 3D print files described in the book are available for free downloading.
IMAGE PROCESSING WITH THE NVIDIA JETSON NANO (PART 2)Image Recognition Using Edge Impulse
ELEKTOR JUMPSTARTER NEWSUpcoming Campaigns
AN OPEN-SOURCE GPS TRACKING PLATFORMTraccar Maps Vehicle Tracking Without the Need for a Third-Party Cloud Server
JOY-IT LCR-T7 MULTI-FUNCTION TESTERTesting Passives, Discrete Semiconductors and IR Remote Controls
NOISE SYNTHESIZERFrom Noise to Music with the PRBSynth1
STARTING OUT IN ELECTRONICSEasier than Imagined! ... Continuing with the Coil
UNDERSTANDING THE NEURONS IN NEURAL NETWORKS (PART 2)Logical Neurons
ISSUES WITH SECURITY? FIGHT FIRE WITH FIRE!Flashbulb-Protected Analogue Memory Add-on For the Tamper-Evident Box LCR METER POSTER
BLUETOOTH BEACONS IN PRACTICEBeacons Light the Way Ahead
C PROGRAMMING ON RASPBERRY PICommunicating over Wi-Fi (Sample Chapter)
EMC PRE-COMPLIANCE TEST FOR YOUR DC-POWERED PROJECT (PART 2)The Hardware and How to Use It
HANDS ON THE PARALLAX PROPELLER 2 (PART 5)Inside the Smart Pin
MODBUS OVER WLAN (PART 1)Hardware and Programming
HOMELAB TOURSWhere the Junior Computer Is Brought to Life Again
BUILD YOUR OWN HIGH-PRECISION CALIBRATOR-10 V to +10 V, 0 to 40 mA, 0.001%
ARDUINO NANO RP2040 CONNECTRaspberry Pi RP2040 + Wi-Fi + Bluetooth THE PHYSICAL BODY OF ARTIFICIAL INTELLIGENCE
ERR-LECTRONICSCorrections, Updates and Readers’ Letters
CREATE GUIS WITH PYTHONIntroducing guizero
CO2 METER KIT FOR THE CLASSROOMAn ESP8266-Based Device from the University of Applied Sciences Aachen
NOSTALGIC MK484 MW/LW RADIO...Always Fun to Build!
ELEKTOR @ 60Let There Be Light!
HEXADOKUThe Original Elektorized Sudoku
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.
Elektor GREEN and GOLD members can download their digital edition here.
Not a member yet? Click here.
CaptureCountAn Object Detector and Counter on the Raspberry Pi 5
Voltage Reference With Arduino Pro MiniLinearize and Calibrate Your Analog Inputs
FPGAs for BeginnersThe Path From MCU to FPGA Programming
Update: STM32 Wireless Innovation Design Contest 2024
Bluetooth LE With MAUIControl Apps for Android & Co.
Port-Expanding Breakout BoardIncrease the Number of I/Os on Your Dev Board
AI SpecialistMachine Learning with the Jetson Nano
2024: An AI OdysseyFirst Forays Into TensorFlow
262,144 Ways to Play The Game of LifeA Reader’s Project in Brief
From Life’s ExperienceThe Chinese Dragon
Get Your (Brushed DC) Motor Running!Sample Projects from the Elektor Motor Control Development Bundle
ESP32-RS-232 AdapterA Wireless Link for Classic Test Equipment
Starting Out in Electronics……More About Opamps
ESP Library Recommendations
Piezoelectric DevicesPeculiar Parts, the Series
A Smart Object CounterImage Recognition Made Easy with Edge Impulse
Resolve Your Trickiest Embedded Development Challenges
ESP32 TerminalA Handheld Device with a Touch-Capable Display
Getting Started With the Zephyr RTOSAs Powerful as It Is Hard to Master
Award-Winning EthicsA Dialog with CTO Alexander Gerfer of Würth Elektronik eiSos on Enabling Innovation and Mindful Behavior
Err-lectronicsCorrections, Updates, and Readers’ Letters
Infographics: Embedded and AI
Square Wave Generation BenchmarksExploring ESP32, Pico, and Other Microcontrollers