Ce qui se passe en électronique est par définition invisible à l'oeil nu. L'instrument qui permet précisément de rendre visibles les signaux électriques, celui par le truchement duquel les effets de l'électronique se manifestent à nous, c'est l'oscilloscope. Hélas, quand on commence à faire de l'électronique, c'est souvent sans oscilloscope. Et l'on en est réduit à tâtonner, aussi bien physiquement que mentalement. Le jour où l'on goûte à la visualisation des signaux sur un écran, c'est une révélation. Plus personne ne souhaite se priver de cet enchantement. Pas de retour en arrière. En électronique, si l'on veut progresser dans le plaisir et dans la compréhension, il faut un oscillo. Commence alors une période d'interrogation : comment choisir ? Et à peine cette question-là aura-t-elle trouvé sa réponse, il en viendra une ribambelle d'autres que l'on peut résumer en une seule : comment se servir de l'oscilloscope de telle sorte que ce qu'il affiche corresponde bien à la réalité des signaux ? Dans ce livre, Rémy Mallard, répond clairement à ces questions. Il donne aussi de nombreuses informations pour aider son lecteur à élucider lui-même de nouveaux mystères qui ne manqueront pas de surgir. Ceux qui le connaissent déjà comme l'auteur d'un livre sur l'électronique dont le titre est un programme à lui tout seul : L'électronique pour les débutants qui sèchent les cours mais soudent sans se brûler les doigts, ainsi que d'un livre d'initiation à la programmation des microcontrôleurs PIC, savent qu'ils trouveront ici un ouvrage utile, qu'ils rouvriront souvent.

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Ce qui se passe en électronique est par définition invisible à l'oeil nu. L'instrument qui permet précisément de rendre visibles les signaux électriques, celui par le truchement duquel les effets de l'électronique se manifestent à nous, c'est l'oscilloscope. Hélas, quand on commence à faire de l'électronique, c'est souvent sans oscilloscope. Et l'on en est réduit à tâtonner, aussi bien physiquement que mentalement. Le jour où l'on goûte à la visualisation des signaux sur un écran, c'est une révélation. Plus personne ne souhaite se priver de cet enchantement. Pas de retour en arrière. En électronique, si l'on veut progresser dans le plaisir et dans la compréhension, il faut un oscillo. Commence alors une période d'interrogation : comment choisir ? Et à peine cette question-là aura-t-elle trouvé sa réponse, il en viendra une ribambelle d'autres que l'on peut résumer en une seule : comment se servir de l'oscilloscope de telle sorte que ce qu'il affiche corresponde bien à la réalité des signaux ? Dans ce livre, Rémy Mallard, répond clairement à ces questions. Il donne aussi de nombreuses informations pour aider son lecteur à élucider lui-même de nouveaux mystères qui ne manqueront pas de surgir. Ceux qui le connaissent déjà comme l'auteur d'un livre sur l'électronique dont le titre est un programme à lui tout seul : L'électronique pour les débutants qui sèchent les cours mais soudent sans se brûler les doigts, ainsi que d'un livre d'initiation à la programmation des microcontrôleurs PIC, savent qu'ils trouveront ici un ouvrage utile, qu'ils rouvriront souvent.

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De LILYGO T-Display-S3 Long is een veelzijdig ontwikkelbord, aangedreven door de ESP32-S3R8 dual-core LX7-microprocessor. Het beschikt over een 3,4-inch capacitief TFT-LCD-aanraakscherm met een resolutie van 180 x 640 pixels, wat een responsieve interface biedt voor verschillende toepassingen. Dit bord is ideaal voor ontwikkelaars die op zoek zijn naar een compacte maar krachtige oplossing voor projecten die aanraakinvoer en draadloze communicatie vereisen. De compatibiliteit met populaire programmeeromgevingen zorgt voor een soepele ontwikkelervaring. Specificaties MCU ESP32-S3R8 Dual-core LX7-microprocessor Draadloze connectiviteit Wi-Fi 802.11, BLE 5 + BT Mesh Programmeerplatform Arduino IDE, VS-code Flash 16 MB PSRAM 8 MB Detectie van batspanning IO02 Ingebouwde functies Opstart- en resetknop, batterijschakelaar Weergave 3,4" capacitief TFT-touchscreen Kleurdiepte 565, 666 Resolutie 180 x 640 (RGB) Werkende voeding 3,3 V Interface QSPI Inbegrepen 1x T-Display S3 Long 1x Voedingskabel 2x STEMMA QT/Qwiic-interfacekabel (P352) 1x Female pin (dubbele rij) Downloads GitHub

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This book is intended as a highly-practical guide for Hobbyists, Engineers and Scientists wishing to build measurement and control systems to be controlled by a local or remote Personal Computer running the Linux operating system. Both hardware and software aspects of designing typical embedded systems are covered in detail with schematics, code listings and full descriptions. Numerous examples have been designed to show clearly how straightforward it can be to create the interfaces between digital and analog electronics, with programming techniques for creating control software for both local and remote systems. Hardware developers will appreciate the variety of circuits, including a novel, low cost modulated wireless link and will discover how using Matlab® overcomes the need for specialist programming skills. Software developers will appreciate how a better understanding of circuits plus the freedom offered by Linux to directly control at the register level enables them to optimize related programs. There is no need to buy special equipment or expensive software tools in order to create embedded projects covered in this book. You can build such quality systems quickly using popular low-cost electronic components and free distributed or low-cost software tools. Some knowledge of basic electronics plus the very basics of C programming only is required. Many projects in this book are developed using Matlab® being a very popular worldwide computational tool for research in engineering and science. The book provides a detailed description of how to combine the power of Matlab® with practical electronics. With an emphasis on learning by doing, readers are encouraged by examples to program with ease; the book provides clear guidelines as to the appropriate programming techniques “on the fly”. Complete and well-documented source code is provided for all projects. If you want to learn how to quickly build Linux-based applications able to collect, process and display data on a PC from various analog and digital sensors, how to control circuitry attached to a computer, then even how to pass data via a network or control your embedded system wirelessly and more – then this is the book for you! Features of this Book Use the power, flexibility and control offered only by a Linux operating system on a PC. Use a free, distributed downloadable GNU C compiler Use (optional) a low-cost Student Version of Matlab®. Use low-cost electronic sub-assemblies for projects. Improve your skills in electronics, programming, networking and wireless design. A full chapter is dedicated to controlling your sound card for audio input and output purposes. Program sound using OSS and ALSA. Learn how to combine electronic circuits, software, networks and wireless technologies in the complete embedded system.

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Lo-Fi (ESP32 + LoRa combination) is the perfect solution for anyone looking to establish long-range wireless communication in a variety of applications with WiFi capabilities. LoRa offers exceptional range and easy connectivity, it allows you to seamlessly communicate with devices up to 5 km away. Devices provide an efficient and trustworthy choice for long-range wireless communication in addition to WiFi access to link internet clouds best suited for Internet of Things applications, enabling connectivity in remote and challenging settings. Features Device powered by powerful ESP32 S3 WROOM-1 which is having Xtensa dual-core 32-bit LX7 microprocessor, up to 240 MHz Inbuilt Wi-Fi & Bluetooth LE for wireless connectivity Type C interface for Programming/Power 1.14" TFT display for visual interactions GPIO breakouts for interfacing additional peripherals Breadboard compatible for easy DIY breadboarding projects 2 separate user programmable buttons along with Reset and Boot buttons 3.7 V Lithium Battery connector for a portable use case with an onboard charging option Use new generation LoRa spread spectrum to ensure stable communication For LoRa, faster speed and a longer data transmission range of up to 5 km Applications Internet of Things (IoT) Smart Home Automation Agricultural Automation Emergency Services Environmental Monitoring Industrial Automation Specifications Microcontroller: ESP32 S3 WROOM-1 Wireless Interface: WiFi, BLE, LoRa Protocol: 802.11b/g/n, Bluetooth 5.0 Memory Size: 16 MB Flash, 384 kB ROM, 8 MB SRAM Supply Voltage: 5 V Operating Voltage: 3.3 V Display Size: 1.14” Display Type: TFT Display resolution: 135 x 240 pixels Display driver: ST7789V Display Appearance: RGB Display color: 4k/65k/252k Display Luminance: 400 Cd/m² Operating Temperature: -20 to 70°C Storage Temperature: -30 to 80°C LoRa Module Specs: Carrier Frequency (License Free ISM): 868 MHz Chip: Based on SX1262 RF chip Range: 5Km Transmitting Power: 22 dBm Receiving Sensitivity: -147 dbm Data Rate: Up to 62.5 kbps Communication Port: UART serial Downloads Getting started guide Hardware design files Included 1x Lo-Fi Board 1x Antenna (868 MHz)

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PC USB Logic Analyzers with Arduino, Raspberry Pi, and Co. Step-by-step instructions guide you through the analysis of modern protocols such as I²C, SPI, UART, RS-232, NeoPixel, WS28xx, HD44780 and 1-Wire protocols. With the help of numerous experimental circuits based on the Raspberry Pi Pico, Arduino Uno and the Bus Pirate, you will learn the practical application of popular USB logic analyzers. All the experimental circuits presented in this book have been fully tested and are fully functional. The necessary program listings are included – no special programming or electronics knowledge is required for these circuits. The programming languages used are MicroPython and C along with the development environments Thonny and Arduino IDE. This book uses several models of flexible and widely available USB logic analyzers and shows the strengths and weaknesses of each price range. You will learn about the criteria that matter for your work and be able to find the right device for you. Whether Arduino, Raspberry Pi or Raspberry Pi Pico, the example circuits shown allow you to get started quickly with protocol analysis and can also serve as a basis for your own experiments. After reading this book, you will be familiar with all the important terms and contexts, conduct your own experiments, analyze protocols independently, culminating in a comprehensive knowledge set of digital signals and protocols.

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PC USB Logic Analyzers with Arduino, Raspberry Pi, and Co. Step-by-step instructions guide you through the analysis of modern protocols such as I²C, SPI, UART, RS-232, NeoPixel, WS28xx, HD44780 and 1-Wire protocols. With the help of numerous experimental circuits based on the Raspberry Pi Pico, Arduino Uno and the Bus Pirate, you will learn the practical application of popular USB logic analyzers. All the experimental circuits presented in this book have been fully tested and are fully functional. The necessary program listings are included – no special programming or electronics knowledge is required for these circuits. The programming languages used are MicroPython and C along with the development environments Thonny and Arduino IDE. This book uses several models of flexible and widely available USB logic analyzers and shows the strengths and weaknesses of each price range. You will learn about the criteria that matter for your work and be able to find the right device for you. Whether Arduino, Raspberry Pi or Raspberry Pi Pico, the example circuits shown allow you to get started quickly with protocol analysis and can also serve as a basis for your own experiments. After reading this book, you will be familiar with all the important terms and contexts, conduct your own experiments, analyze protocols independently, culminating in a comprehensive knowledge set of digital signals and protocols.

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Double Backlit User Interface: The dual backlit button is just like the single backlit button, but twice the fun! Use this component when you need to operate something up and down, or right to left. Using cut-out vinyl, you can create icons and stickers on fabric that show your users button functionality. Features Component: 4.6' x 6.3' Individual Button Size: 1' radius circle Press Durability: Up to 10,000 presses under 5lbf LED Voltage: 5 V

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Like the mini pressure sensor, but bigger! Our 3x3 mega pressure matrix has 6 leads, allowing you to map which point you are at in the 3x3 matrix and get a pressure mapping over a surface. Each area has an analog readout that varies depending on the weight of the item on the pressure sensor. Generally, sensor values will read from 500 Kohms to 100 ohms depending on the force put onto the sensor. Features Component: 5' x 6.5 Sensing Area 3.0' Square Thickness: Approx 20 mils

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The single backlit button is a simple mechanical switch that comes with an LED inside. When you press the button, the circuit is completed, driving your pin high or low. Use the embedded LED to make a glowing power icon, logo , or whatever suits your fancy. Features Press durability: Up to 10,000 times pressing under 5lbf (22.24 N) LED Voltage: 5 V Component: 2' x 3' Individual (5,08 cm x 7,62 cm) Button Size: 1' radius circle (2,54 cm)

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Deze LR1302 module is een LoRaWAN gateway module van de nieuwe generatie. Zijn vormfactor is gebaseerd op mini-PCIe, en hij heeft een laag stroomverbruik en hoge prestaties. Voorzien van de SX1302 LoRaWAN baseband chip van Semtech Network biedt de LR1302 gateway module diverse gateway functies met potentieel de capaciteit voor draadloze transmissie over lange afstanden. Vergeleken met de vorige SX1301 en SX1308 LoRa chips heeft de SX1302 chip een hogere gevoeligheid, een lager stroomverbruik en een lagere bedrijfstemperatuur. Hij ondersteunt 8-kanaals gegevensoverdracht, verbetert de communicatie efficiëntie en capaciteit, en ondersteunt de verbindingen en gegevensoverdracht naar meer apparaten. Hij heeft twee antenne interfaces, één voor het verzenden en ontvangen van LoRa-signalen en één U.FL (IPEX) interface voor onafhankelijke transmissie. Hij heeft ook een metalen afscherming om te beschermen tegen externe interferentie, en om een betrouwbare communicatieomgeving te bieden. De LR1302 is speciaal ontworpen voor IoT, en is derhalve geschikt voor een verscheidenheid aan IoT toepassingen. Of het nu gaat om gebruik in smart cities, landbouw, industriële automatisering of andere gebieden, de LR1302 module kan betrouwbare verbindingen en efficiënte gegevensoverdracht bieden. Kenmerken Maakt gebruik van de Semtech SX1302 baseband LoRa chip met extreem laag stroomverbruik en uitstekende prestaties De Mini-PCIe vormfactor en het compact ontwerp maken het gemakkelijker om hem te integreren in verschillende gateway-apparaten, en maakt hem geschikt voor toepassingen met beperkte ruimte, en biedt flexibele implementatieopties Ondersteuning van 8-kanaals datatransmissie, zorgt voor betere communicatie-efficiëntie en capaciteit Ultra-lage bedrijfstemperatuur elimineert de noodzaak van extra koeling, en verkleint de afmeting van de LoRaWAN gateway Gebruikt het SX1250 TX/RX front-end met een gevoeligheid tot -139 dBm@SF12; TX-vermogen tot 26 dBm @3,3 V Specificaties Frequentie 863 - 870 MHz (EU868) Chipset Semtech SX1302 chip Gevoeligheid -125 dBm @125K/SF7-139 dBm @125K/SF12 TX vermogen 26 dBm (met 3,3 V voeding) Bandbreedte 125/250/500 kHz Kanalen 8 kanaals LED's Power: GroenConfig: RoodTX: GroenRX: Blauw Vormfactor Mini PCIe, 52-pins Golden Finger Stroomverbruik (SPI-versie) Stand-by: 7,5 mATX maximaal vermogen: 415 mARX: 40 mA Stroomverbruik (USB-versie) Stand-by: 20 mATX maximaal vermogen: 425 mARX: 53 mA LBT (Listen Before Talk) Ondersteund Antenne connector U.FL Bedrijfstemperatuur -40 tot 85°C Afmetingen (B x L) 30 x 50,95 mm Note De LR1302 LoRaWAN Gateway Module is niet inbegrepen. Downloads Wiki SX1302 Datasheet Schema

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An Introduction to Circuit Simulation LTspice, developed by Analog Devices, is a powerful, fast, and free SPICE simulator, schematic capture, and waveform viewer with a large database of components supported by SPICE models from all over the world. Drawing a schematic in LTspice is easy and fast. Thanks to its powerful graphing features, you can visualize the voltages and currents in a circuit, and also the power consumption of its components and much more. This book is about learning to design and simulate electronic circuits using LTspice. Among others, the following topics are treated: DC and AC circuits Signal diodes and Zener diodes Transistor circuits including oscillators Thyristor/SCR, diac, and triac circuits Operational amplifier circuits including oscillators The 555 timer IC Filters Voltage regulators Optocouplers Waveform generation Digital logic simulation including the 74HC family SPICE modeling LTspice is a powerful electronic circuit simulation tool with many features and possibilities. Covering them all in detail is not possible in a book of this size. Therefore, this book presents the most common topics like DC and AC circuit analysis, parameter sweeping, transfer functions, oscillators, graphing, etc. Although this book is an introduction to LTspice, it covers most topics of interest to people engaged in electronic circuit simulation. The book is aimed at electronic/electrical engineers, students, teachers, and hobbyists. Many tested simulation examples are given in the book. Readers do not need to have any computer programming skills, but it will help if they are familiar with basic electronic circuit design and operation principles. Readers who want to dive deeper can find many detailed tutorials, articles, videos, design files, and SPICE circuit models on the Internet. All the simulation examples used in the book are available as files at the webpage of this book. Readers can use these example circuits for learning or modify them for their own applications.

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