50+ Android Apps with Raspberry Pi, ESP32 and Arduino This book is about developing apps for Android compatible mobile devices using the MIT App Inventor online development environment. MIT App Inventor projects can be in either standalone mode or use an external processor. In standalone mode, the developed application runs only on the mobile device (e.g. Android). In external processor-based applications, the mobile device communicates with an external microcontroller-based processor, such as Raspberry Pi, Arduino, ESP8266, ESP32, etc. In this book, many tested and fully working projects are given both in standalone mode and using an external processor. Full design steps, block programs, circuit diagrams, QR codes and full program listings are given for all projects. The projects developed in this book include: Using the text-to-speech component Intonating a received SMS message Sending SMS messages Making telephone calls using a contacts list Using the GPS and Pin-pointing our location on a map Speech recognition and speech translation to another language Controlling multiple relays by speech commands Projects for the Raspberry Pi, ESP32 and Arduino using Bluetooth and Wi-Fi MIT APP Inventor and Node-RED projects for the Raspberry Pi The book is unique in that it is currently the only book that teaches how to develop projects using Wi-Fi and Node-RED with MIT App Inventor. The book is aimed at students, hobbyists, and anyone interested in developing apps for mobile devices. All projects presented in this book have been developed using the MIT App Inventor visual programming language. There is no need to write any text-based programs. All projects are compatible with Android-based mobile devices. Full program listings for all projects as well as detailed program descriptions are given in the book. Users should be able to use the projects as they are presented, modifying them to suit their own needs.

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Le Mixer Geek Theremin+ est un instrument de musique électronique amusant et innovant, inspiré du Theremin classique. Contrairement aux instruments traditionnels, le Theremin+ se joue sans contact physique, par des mouvements des mains dans l'air pour contrôler la hauteur et le volume. Le Theremin+ offre une façon passionnante et pratique d'explorer la musique et l'expérimentation sonore. Caractéristiques Prêt à l'emploi dès sa sortie de l'emballage Équipé d'un haut-parleur et d'un écran couleur Navigation et confirmation intuitives par boutons Choisissez parmi plus de 70 sonorités Nombreuses fonctions personnalisables Affichage de la forme d'onde, de la durée, de la fréquence, du volume et de la hauteur de note correspondante (l'affichage peut être désactivé) Alimenté par port USB-C ; compatible avec les batteries externes Conception compacte avec antenne télescopique amovible pour un rangement facile Se connecte à un casque, des enceintes externes ou des appareils d'enregistrement Dimensions : 98 x 70 x 18 mm Inclus 1x Theremin+ Instrument de musique 2x Antennes 1x Câble USB-C

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Valve Amplifiers are regarded by many to be the ne plus ultra when it comes to processing audio signals. The combination of classical technology and modern components has resulted in a revival of the valve amplifier. The use of toraidal-core output transformers, developed by the author over the past 15 years, has contributed to this revival. The most remarkable features of these transformers are their extremely wide frequency ranges and their very low levels of linear and nonlinear distortion. This book explains the whys and wherefores of toroidal output transformers at various technical levels, starting with elementary concepts and culminating in complete mathematical descriptions. In all of this, the interactions of the output valves, transformer and loudspeaker form the central theme. Next come the practical aspects. The schematic diagram of a valve amplifier often appears to be very simple at first glance, but anyone who has built a modern valve amplifier knows that a lot of critical details are hidden behind this apparent simplicity. These are discussed extensively, in connection with designs for amplifiers with output powers ranging from 10 to 100 watts. Finally, the author gives some attention to a number of special valve amplifiers, and to the theory and practice of negative feedback. In summary, this book offers innovative solutions for achieving perfect audio quality. Do-it-yourself builders, as well as persons who want to gain a deeper technical understanding of the complex world of audio transformers, valve amplifiers and audio signal processing, will find this book a rich and useful source of information.

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Le Speaker Kit pour Raspberry Pi est un petit haut-parleur amplifié conçu pour le Raspberry Pi. Inclus MonkMakes Haut-parleur amplifié Jeu de 10 fils d'embase femelle à femelle Câble audio stéréo court Modèle GPIO Feuille de Framboise Téléchargements Instructions Fiche de données

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Ce kit contient tout le nécessaire pour commencer à apprendre à connecter l'électronique au micro:bit de manière accessible et simple. Tout est connecté à l'aide des pinces crocodiles fournies, donc aucune soudure n'est nécessaire. Inclus MonkMakes Haut-parleur pour micro:bit MonkMakes Switch pour micro:bit Carte de capteur MonkMakes pour micro:bit Jeu de cordons à pince crocodile (10 cordons) Petit moteur avec ventilateur Boîtier à pile AA unique (pile non incluse) Ampoule et support Livret (A5) Téléchargements Instructions Fiche de données Plans de cours

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Un adaptateur pour connecter un servo-mètre avec des pinces crocodiles. Il s'agit d'une petite pince pratique pour connecter un servomoteur avec une douille de 5,4 mm à l'aide de pinces crocodiles. Elle est idéale pour une utilisation avec des cartes comme le BBC micro:bit et le Circuit Playground Express ou Gemma d'Adafruit. Largeur : 27 mm Hauteur : 35 mm Téléchargements Fiche de données

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This book is about DC electric motors and their use in Arduino and Raspberry Pi Zero W based projects. The book includes many tested and working projects where each project has the following sub-headings: Title of the project Description of the project Block diagram Circuit diagram Project assembly Complete program listing of the project Full description of the program The projects in the book cover the standard DC motors, stepper motors, servo motors, and mobile robots. The book is aimed at students, hobbyists, and anyone else interested in developing microcontroller based projects using the Arduino Uno or the Raspberry Pi Zero W. One of the nice features of this book is that it gives complete projects for remote control of a mobile robot from a mobile phone, using the Arduino Uno as well as the Raspberry Pi Zero W development boards. These projects are developed using Wi-Fi as well as the Bluetooth connectivity with the mobile phone. Readers should be able to move a robot forward, reverse, turn left, or turn right by sending simple commands from a mobile phone. Full program listings of all the projects as well as the detailed program descriptions are given in the book. Users should be able to use the projects as they are presented, or modify them to suit to their own needs.

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Le Mr. Pulsar Violent Turbo Fan X3 Pro offre un flux d'air puissant grâce à son impressionnant moteur de 140000 tr/min, offrant des performances exceptionnelles dans un design compact et portable. Doté d'une batterie de 8000 mAh pour un fonctionnement sans fil prolongé, de vitesses de flux d'air réglables et d'un poids de seulement 277 grammes, il est idéal pour les tâches rapides comme le nettoyage d'un ordinateur, le séchage d'animaux, le gonflage de matelas pneumatiques, le dépoussiérage ou même le déneigement de votre voiture. Spécifications Vitesse du moteur 140000 tr/min Batterie Batterie lithium 8000 mAh Dimensions 160 x 60 x 90 mm Poids 277 g Inclus 1x M. Pulsar Violent Turbo Fan X3 Pro 1x Buse courte 1x Sac de rangement 1x Câble USB-C

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Architecture, Programming and Applications The MSP430 is a popular family of microcontrollers from Texas Instruments. In this book we will work with the smallest type, which is the powerful MSP430G2553. We will look at the capabilities of this microcontroller in detail, as it is well-suited for self-made projects because it is available in a P-DIP20 package. We will take a closer look at the microcontroller and then build, step by step, some interesting applications, including a 'Hello World' blinking LED and a nice clock application, which can calculate the day of the week based on the date. You also will learn how to create code for the MSP microcontroller in assembler. In addition to that, we will work with the MSP-Arduino IDE, which makes it quite easy to create fast applications without special in-depth knowledge of the microcontrollers. All the code used in the book is available for download from the Elektor website.

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Architecture, Programming and Applications The MSP430 is a popular family of microcontrollers from Texas Instruments. In this book we will work with the smallest type, which is the powerful MSP430G2553. We will look at the capabilities of this microcontroller in detail, as it is well-suited for self-made projects because it is available in a P-DIP20 package. We will take a closer look at the microcontroller and then build, step by step, some interesting applications, including a 'Hello World' blinking LED and a nice clock application, which can calculate the day of the week based on the date. You also will learn how to create code for the MSP microcontroller in assembler. In addition to that, we will work with the MSP-Arduino IDE, which makes it quite easy to create fast applications without special in-depth knowledge of the microcontrollers. All the code used in the book is available for download from the Elektor website.

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Multitasking and multiprocessing have become a very important topic in microcontroller-based systems, namely in complex commercial, domestic, and industrial automation applications. As the complexity of projects grows, more functionalities are demanded from the projects. Such projects require the use of multiple inter-related tasks running on the same system and sharing the available resources, such as the CPU, memory, and input-output ports. As a result of this, the importance of multitasking operations in microcontroller-based applications has grown steadily over the last few years. Many complex automation projects now make use of some form of a multitasking kernel. This book is project-based and its main aim is to teach the basic features of multitasking using the Python 3 programming language on Raspberry Pi. Many fully tested projects are provided in the book using the multitasking modules of Python. Each project is described fully and in detail. Complete program listings are given for each project. Readers should be able to use the projects as they are, or modify them to suit their own needs. The following Python multitasking modules have been described and used in the projects: Fork Thread Threading Subprocess Multiprocessing The book includes simple multitasking projects such as independently controlling multiple LEDs, to more complex multitasking projects such as on/off temperature control, traffic lights control, 2-digit, and 4-digit 7-segment LED event counter, reaction timer, stepper motor control, keypad based projects, car park controller, and many more. The fundamental multitasking concepts such as process synchronization, process communication, and memory sharing techniques have been described in projects concerning event flags, queues, semaphores, values, and so on.

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NetPi est la solution parfaite pour les besoins de connectivité de votre Raspberry Pi Pico. Il s'agit d'un HAT Ethernet qui permet à votre Pico de se connecter facilement à Internet. Avec la prise en charge de divers protocoles Internet tels que TCP, UDP, WOL sur UDP, ICMP, IPv4, etc., NetPi peut créer des appareils IoT, des robots, des systèmes domotiques et des systèmes de contrôle industriel. Il dispose de quatre SOCKET indépendants qui peuvent être utilisés simultanément et prend également en charge les commandes sans SOCKET telles que ARP-Request et PING-Request. L'Ethernet HAT est équipé d'un PHY Ethernet 10Base-T/100Base-TX et d'une négociation automatique pour un duplex intégral et semi-duplex avec des connexions basées sur 10 et 100. NetPi est idéal pour diverses applications. Avec NetPi, vous pouvez désormais prendre en charge les protocoles Internet câblés tels que TCP, UDP, ICMP, etc. Profitez de quatre sockets indépendants pour des connexions simultanées et exécutez des commandes sans socket comme ARP-Request et PING-Request. NetPi prend également en charge le mode de mise hors tension Ethernet et le réveil sur LAN via UDP pour économiser de l'énergie. NetPi est équipé d'un PHY Ethernet 10Base-T/100Base-TX et prend en charge la négociation automatique pour un duplex intégral et semi-duplex avec des connexions basées sur 10 et 100. L'appareil dispose de LED d'indicateur de réseau pour le full/half duplex, la liaison, la vitesse 10/100 et l'état actif. Caractéristiques Compatible avec Raspberry Pi Pico (W) RJ45 intégré avec transformateur : port Ethernet Prend en charge 4 SOCKETS indépendants simultanément Prise en charge des protocoles TCP/IP câblés : TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE Mode de mise hors tension Ethernet et Wake on LAN sur UDP pour économiser l'énergie Ethernet PHY 10Base-T/100Base-TX avec négociation automatique pour full et half duplex avec connexions 10 et 100 LED d'indicateur de réseau pour full/half duplex, liaison, vitesse 10/100 et état actif Breakout à broches RP2040 avec embase à broches femelle pour d'autres blindages et interfaces périphériques Écran LCD TFT 1,3' (240 x 240) et joystick à 5 directions pour une expérience utilisateur Interface SPI, I²C, UART Dimensions : 74,54 x 21,00 mm Applications Appareils Internet des objets (IoT) Systèmes d'automatisation et de contrôle industriels Domotique et systèmes de maison intelligente Systèmes de surveillance à distance et d'enregistrement de données Robotique et systèmes autonomes Systèmes de capteurs en réseau Systèmes d'automatisation des bâtiments et de gestion de l'énergie Systèmes de sécurité et de contrôle d'accès Téléchargements GitHub

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Basée sur la technologie thermique directe, l'imprimante d'étiquettes Niimbot D110 offre une expérience d'impression sans encre, toner ou ruban, ce qui en fait une solution économique par rapport aux imprimantes traditionnelles. Sa taille compacte et son poids léger la rendent facile à transporter et lui permettent de se glisser dans n'importe quelle poche. Grâce à la connectivité Bluetooth et à une batterie intégrée de 1500 mAh, cette mini-imprimante sans fil vous permet d'imprimer jusqu'à 10 mètres de distance, ce qui vous offre une grande flexibilité en déplacement, que vous imprimiez à partir de votre smartphone ou de votre tablette. L'application « Niimbot » (disponible pour iOS et Android) offre une variété de modèles gratuits pour personnaliser les étiquettes. Spécifications Modèle D110_M (version améliorée 2024) Matériel ABS Résolution 203 DPI Vitesse d'impression 30-60 mm/s Largeur d'impression 12-15 mm Technologie d'impression Thermique Température de fonctionnement 5°C ~ 45°C Capacité de la batterie 1500 mAh Interface de chargement USB-C Temps de charge 2 heures Connexion Bluetooth 4.0 Distance sans fil 10 m Dimensions 98 x 76 x 30 mm Poids 149 g Inclus 1x Niimbot D110 imprimante d'étiquettes 1x Ruban d'étiquettes (12 x 40 mm) 1x Câble USB 1x Manuel Téléchargements iOS App Android App

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From basics to flows for sensors, automation, motors, MQTT, and cloud services This book is a learning guide and a reference. Use it to learn Node-RED, Raspberry Pi Pico W, and MicroPython, and add these state-of-the-art tools to your technology toolkit. It will introduce you to virtual machines, Docker, and MySQL in support of IoT projects based on Node-RED and the Raspberry Pi Pico W. This book combines several elements into a platform that powers the development of modern Internet of Things applications. These elements are a flow-based server, a WiFi-enabled microcontroller, a high-level programming language, and a deployment technology. Combining these elements gives you the tools you need to create automation systems at any scale. From home automation to industrial automation, this book will help you get started. Node-RED is an open-source flow-based development tool that makes it easy to wire together devices, APIs, and online services. Drag and drop nodes to create a flowchart that turns on your lights at sunset or sends you an email when a sensor detects movement. Raspberry Pi Pico W is a version of the Raspberry Pi Pico with added 802.11n Wi-Fi capability. It is an ideal device for physical computing tasks and an excellent match to the Node-RED. Quick book facts Project-based learning approach. Assumes no prior knowledge of flow-based programming tools. Learn to use essential infrastructure tools in your projects, such as virtual machines, Docker, MySQL and useful web APIs such as Google Sheets and OpenWeatherMap. Dozens of mini-projects supported by photographs, wiring schematics, and source code. Get these from the book GitHub repository. Step-by-step instructions on everything. All experiments are based on the Raspberry Pi Pico W. A Wi-Fi network is required for all projects. Hardware (including the Raspberry Pi Pico W) is available as a kit. Downloads GitHub

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From basics to flows for sensors, automation, motors, MQTT, and cloud services This book is a learning guide and a reference. Use it to learn Node-RED, Raspberry Pi Pico W, and MicroPython, and add these state-of-the-art tools to your technology toolkit. It will introduce you to virtual machines, Docker, and MySQL in support of IoT projects based on Node-RED and the Raspberry Pi Pico W. This book combines several elements into a platform that powers the development of modern Internet of Things applications. These elements are a flow-based server, a WiFi-enabled microcontroller, a high-level programming language, and a deployment technology. Combining these elements gives you the tools you need to create automation systems at any scale. From home automation to industrial automation, this book will help you get started. Node-RED is an open-source flow-based development tool that makes it easy to wire together devices, APIs, and online services. Drag and drop nodes to create a flowchart that turns on your lights at sunset or sends you an email when a sensor detects movement. Raspberry Pi Pico W is a version of the Raspberry Pi Pico with added 802.11n Wi-Fi capability. It is an ideal device for physical computing tasks and an excellent match to the Node-RED. Quick book facts Project-based learning approach. Assumes no prior knowledge of flow-based programming tools. Learn to use essential infrastructure tools in your projects, such as virtual machines, Docker, MySQL and useful web APIs such as Google Sheets and OpenWeatherMap. Dozens of mini-projects supported by photographs, wiring schematics, and source code. Get these from the book GitHub repository. Step-by-step instructions on everything. All experiments are based on the Raspberry Pi Pico W. A Wi-Fi network is required for all projects. Hardware (including the Raspberry Pi Pico W) is available as a kit. Downloads GitHub

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Remarque : NodeMCU est le nom d'un micrologiciel et d'une carte. NodeMCU est une plateforme IoT open source, dont le firmware fonctionne sur le SoC Wi-Fi ESP8266 d'Espressif, basé sur le SDK ESP8266 nonOS . Son matériel est basé sur le module ESP-12. Le langage de script est Lua qui permet d'utiliser de nombreux projets open source comme lua-cjson et spiffs. Caractéristiques Module Wi-Fi – Module ESP-12E similaire au module ESP-12 mais avec 6 GPIO supplémentaires. USB – port micro USB pour l’alimentation, la programmation et le débogage En-têtes – 2 connecteurs 2,54 mm à 15 broches avec accès aux GPIO, SPI, UART, ADC et broches d'alimentation Boutons de réinitialisation et de flash Alimentation : 5 V via port micro USB Dimensions : 49 x 24,5 x 13 mm

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Le dongle nRF52840 est un petit dongle USB à faible coût qui prend en charge les protocoles propriétaires Bluetooth 5.3, Bluetooth mesh, Thread, ZigBee, 802.15.4, ANT et 2,4 GHz. Le dongle est le matériel cible idéal à utiliser avec nRF Connect for Desktop car il est peu coûteux mais prend toujours en charge toutes les normes sans fil à courte portée utilisées avec les appareils nordiques. Le dongle a été conçu pour être utilisé comme périphérique matériel sans fil avec nRF Connect for Desktop. Pour d'autres cas d'utilisation, veuillez noter qu'il n'y a pas de support de débogage sur le dongle, seulement un support pour la programmation de l'appareil et la communication via USB. Il est pris en charge par la plupart des applications nRF Connect for Desktop et sera automatiquement programmé si nécessaire. De plus, des applications personnalisées peuvent être compilées et téléchargées sur le dongle. Il dispose d'une LED RVB programmable par l'utilisateur, d'une LED verte, d'un bouton programmable par l'utilisateur ainsi que de 15 GPIO accessibles à partir de points de soudure crénelés le long du bord. Des exemples d'applications sont disponibles dans le SDK nRF5 sous le nom de carte PCA10059. Le dongle nRF52840 est pris en charge par nRF Connect for Desktop ainsi que par la programmation via nRFUtil. Caractéristiques Radio multiprotocole compatible Bluetooth 5.2 2Mbps Longue portée Extensions de publicité Algorithme de sélection de canal n°2 (CSA n°2) Prise en charge radio IEEE 802.15.4 Fil ZigBee Arm Cortex-M4 avec prise en charge de la virgule flottante Jeu d'instructions DSP Accélérateur cryptographique ARM CryptoCell CC310 15 GPIO disponibles via créneaux de bord Interface USB directement vers le SoC nRF52840 Antenne PCB 2,4 GHz intégrée 1 bouton programmable par l'utilisateur 1 LED RVB programmable par l'utilisateur 1 LED programmable par l'utilisateur Fonctionnement 1,7-5,5 V depuis USB ou externe Téléchargements Fiche de données Fichiers matériels

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Cet ensemble contient 3 buses pour les stations de reprise à air chaud telles que ZD-8922 ou ZD-8968. Inclus 1x Buse à air chaud 79-3911 1x Buse à air chaud 79-3912 1x Buse à air chaud 79-3913

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NRF24L01 est une puce émetteur-récepteur monolithique universelle en bande ISM fonctionnant dans la bande 2,4-2,5 GHz. Caractéristiques Émetteur-récepteur sans fil comprenant : Générateur de fréquence, type amélioré, SchockBurstTM, contrôleur de mode, amplificateur de puissance, amplificateur à cristal, modulateur, démodulateur La sélection du canal de puissance de sortie et les paramètres du protocole peuvent être définis avec une consommation de courant extrêmement faible, via l'interface SPI. En mode de transmission, la puissance de transmission est de 6 dBm, le courant est de 9,0 mA, le courant du mode accepté est de 12,3 mA, la consommation de courant du mode mise hors tension et du mode veille est inférieure Antenne 2,4 GHz intégrée, prend en charge jusqu'à six canaux de réception de données Taille : 15 x 29 mm (antenne comprise)

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Hands-on in more than 50 projects STM32 Nucleo family of processors are manufactured by STMicroelectronics. These are low-cost ARM microcontroller development boards. This book is about developing projects using the popular STM32CubeIDE software with the Nucleo-L476RG development board. In the early Chapters of the book the architecture of the Nucleo family is briefly described. The book covers many projects using most features of the Nucleo-L476RG development board where the full software listings for the STM32CubeIDE are given for each project together with extensive descriptions. The projects range from simple flashing LEDs to more complex projects using modules, devices, and libraries such as GPIO, ADC, DAC, I²C, SPI, LCD, DMA, analogue inputs, power management, X-CUBE-MEMS1 library, DEBUGGING, and others. In addition, several projects are given using the popular Nucleo Expansion Boards. These Expansion Boards plug on top of the Nucleo development boards and provide sensors, relays, accelerometers, gyroscopes, Wi-Fi, and many others. Using an expansion board together with the X-CUBE-MEMS1 library simplifies the task of project development considerably. All the projects in the book have been tested and are working. The following sub-headings are given for each project: Project Title, Description, Aim, Block Diagram, Circuit Diagram, and Program Listing for the STM32CubeIDE. In this book you will learn about STM32 microcontroller architecture; the Nucleo-L476RG development board in projects using the STM32CubeIDE integrated software development tool; external and internal interrupts and DMA; DEBUG, a program developed using the STM32CubeIDE; the MCU in Sleep, Stop, and in Standby modes; Nucleo Expansion Boards with the Nucleo development boards. What you need a PC with Internet connection and a USB port; STM32CubeIDE software (available at STMicroelectronics website free of charge) the project source files, available from the book’s webpage hosted by Elektor; Nucleo-L476RG development board; simple electronic devices such as LEDs, temperature sensor, I²C and SPI chips, and a few more; Nucleo Expansion Boards (optional).

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Hands-on in more than 50 projects STM32 Nucleo family of processors are manufactured by STMicroelectronics. These are low-cost ARM microcontroller development boards. This book is about developing projects using the popular STM32CubeIDE software with the Nucleo-L476RG development board. In the early Chapters of the book the architecture of the Nucleo family is briefly described. The book covers many projects using most features of the Nucleo-L476RG development board where the full software listings for the STM32CubeIDE are given for each project together with extensive descriptions. The projects range from simple flashing LEDs to more complex projects using modules, devices, and libraries such as GPIO, ADC, DAC, I²C, SPI, LCD, DMA, analogue inputs, power management, X-CUBE-MEMS1 library, DEBUGGING, and others. In addition, several projects are given using the popular Nucleo Expansion Boards. These Expansion Boards plug on top of the Nucleo development boards and provide sensors, relays, accelerometers, gyroscopes, Wi-Fi, and many others. Using an expansion board together with the X-CUBE-MEMS1 library simplifies the task of project development considerably. All the projects in the book have been tested and are working. The following sub-headings are given for each project: Project Title, Description, Aim, Block Diagram, Circuit Diagram, and Program Listing for the STM32CubeIDE. In this book you will learn about STM32 microcontroller architecture; the Nucleo-L476RG development board in projects using the STM32CubeIDE integrated software development tool; external and internal interrupts and DMA; DEBUG, a program developed using the STM32CubeIDE; the MCU in Sleep, Stop, and in Standby modes; Nucleo Expansion Boards with the Nucleo development boards. What you need a PC with Internet connection and a USB port; STM32CubeIDE software (available at STMicroelectronics website free of charge) the project source files, available from the book’s webpage hosted by Elektor; Nucleo-L476RG development board; simple electronic devices such as LEDs, temperature sensor, I²C and SPI chips, and a few more; Nucleo Expansion Boards (optional).

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