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For Raspberry Pi, ESP32 and nRF52 with Python, Arduino and Zephyr Bluetooth Low Energy (BLE) radio chips are ubiquitous from Raspberry Pi to light bulbs. BLE is an elaborate technology with a comprehensive specification, but the basics are quite accessible. A progressive and systematic approach will lead you far in mastering this wireless communication technique, which is essential for working in low power scenarios. In this book, you’ll learn how to: Discover BLE devices in the neighborhood by listening to their advertisements. Create your own BLE devices advertising data. Connect to BLE devices such as heart rate monitors and proximity reporters. Create secure connections to BLE devices with encryption and authentication. Understand BLE service and profile specifications and implement them. Reverse engineer a BLE device with a proprietary implementation and control it with your own software. Make your BLE devices use as little power as possible. This book shows you the ropes of BLE programming with Python and the Bleak library on a Raspberry Pi or PC, with C++ and NimBLE-Arduino on Espressif’s ESP32 development boards, and with C on one of the development boards supported by the Zephyr real-time operating system, such as Nordic Semiconductor's nRF52 boards. Starting with a very little amount of theory, you’ll develop code right from the beginning. After you’ve completed this book, you’ll know enough to create your own BLE applications.

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Das Elektor ESP32-Energiemessgerät wurde für die Echtzeit-Energieüberwachung und die Smart Home-Integration entwickelt. Angetrieben durch den ESP32-S3 Mikrocontroller bietet es robuste Leistung mit modularen und skalierbaren Funktionen. Das Gerät verwendet einen 220 V-auf-12 V-Abwärtstransformator zur Spannungsabtastung, der eine galvanische Trennung und Sicherheit gewährleistet. Sein kompaktes Platinenlayout umfasst Schraubklemmenblöcke für sichere Verbindungen, einen Qwiic-Anschluss für zusätzliche Sensoren und einen Programmier-Header für die direkte ESP32-S3-Konfiguration. Der Energiezähler ist mit einphasigen und dreiphasigen Systemen kompatibel und somit für verschiedene Anwendungen anpassbar. Das Energiemessgerät ist einfach einzurichten und lässt sich in Home Assistant integrieren. Er bietet Echtzeitüberwachung, Verlaufsanalysen und Automatisierungsfunktionen. Es liefert genaue Messungen von Spannung, Strom und Leistung und ist damit ein wertvolles Werkzeug für das Energiemanagement in Haushalten und Unternehmen. Features Umfassende Energieüberwachung: Erhalten Sie detaillierte Einblicke in Ihren Energieverbrauch für eine intelligentere Verwaltung. Anpassbare Software: Passen Sie die Funktionalität an Ihre Bedürfnisse an, indem Sie eigene Sensoren programmieren und integrieren. Smart Home Ready: Kompatibel mit ESPHome, Home Assistant und MQTT für vollständige Smart Home-Integration. Sicher & Flexibles Design: Funktioniert mit einem 220 V-zu-12 V-Abwärtstransformator und verfügt über eine vormontierte SMD-Platine. Schnellstart: Enthält einen Stromwandlersensor und Zugang zu kostenlosen Einrichtungsressourcen. Technische Daten Mikrocontroller ESP32-S3-WROOM-1-N8R2 Energiemess-IC ATM90E32AS Statusanzeigen 4x LEDs zur Anzeige des Stromverbrauchs2x programmierbare LEDs für benutzerdefinierte Statusbenachrichtigungen Benutzereingabe 2x Drucktasten zur Benutzersteuerung Ausgabe anzeigen I²C-OLED-Display zur Echtzeit-Anzeige des Stromverbrauchs Eingangsspannung 110/220 V AC (über Abwärtstransformator) Eingangsleistung 12 V (über Abwärtstransformator oder DC-Eingang) Klemmstromsensor YHDC SCT013-000 (100 A/50 mA) im Lieferumfang enthalten Smart Home-Integration ESPHome, Home Assistant und MQTT für nahtlose Konnektivität Konnektivität Header für die Programmierung, Qwiic für Sensorerweiterung Anwendungen Unterstützt einphasige und dreiphasige Energieüberwachungssysteme Abmessungen 79,5 x 79,5 mm Lieferumfang 1x Teilbestückte Platine (SMD-Bauteile sind vormontiert) 2x Schraubklemmenblock-Anschlüsse (nicht montiert) 1x YHDC SCT013-000 Stromwandler Erforderlich Netztransformator nicht enthalten Downloads Datasheet (ESP32-S3-WROOM-1) Datasheet (ATM90E32AS) Datasheet (SCT013-000) Frequently Asked Questions (FAQ) Vom Prototyp zum fertigen Produkt Was als innovatives Projekt zur Entwicklung eines zuverlässigen und benutzerfreundlichen Energiemessgeräts mithilfe des ESP32-S3-Mikrocontrollers begann, hat sich zu einem robusten Produkt entwickelt. Ursprünglich als Open-Source-Projekt entwickelt, zielte das Gerät darauf ab, eine präzise Energieüberwachung, Smart-Home-Integration und mehr zu ermöglichen. Durch sorgfältige Hardware- und Firmware-Entwicklung ist das Energiemessgerät heute eine kompakte, vielseitige Lösung für das Energiemanagement.

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Die Flexibilität des Artemis-Moduls beginnt mit dem Arduino-Kern von SparkFun. Sie können das Artemis-Modul genauso programmieren und verwenden wie einen Uno oder jeden anderen Arduino. Der Zeitpunkt des ersten Blinkens ist nur 5 Minuten entfernt! Wir haben den Kern von Grund auf neu entwickelt, um ihn schnell und so leicht wie möglich zu machen. Nächste Aufgabe ist das Modul selbst. Mit einer Größe von 10 mm x 15 mm verfügt das Artemis-Modul über alle unterstützenden Schaltungen, die Sie benötigen, um den fantastischen Ambiq Apollo3-Prozessor in Ihrem nächsten Projekt einzusetzen. Wir sind stolz darauf, sagen zu können, dass das SparkFun Artemis-Modul das erste Open-Source-Hardware-Modul ist, bei dem die Design-Dateien frei und einfach verfügbar sind. Wir haben das Modul sorgfältig entworfen, so dass die Implementierung von Artemis in Ihr Design mit kostengünstigen 2-Lagen-Leiterplatten und 8mil Leiterbahnabstand erfolgen kann. Das Artemis-Modul wird in den USA in der SparkFun-Produktionsstätte in Boulder hergestellt und ist für Consumer-Produkte konzipiert. Damit unterscheidet sich das Artemis-Modul deutlich von seinen Arduino-Brüdern. Sind Sie bereit, Ihr Produkt zu skalieren? Das Artemis wächst mit Ihnen über den Uno-Footprint und die Arduino-IDE hinaus. Zusätzlich verfügt der Artemis über einen erweiterten HAL (Hardware Abstraction Layer), der es dem Anwender ermöglicht, die moderne Cortex-M4F-Architektur bis an ihre Grenzen zu treiben. Das SparkFun Artemis Modul ist vollständig FCC/IC/CE-zertifiziert und ist in vollen Tape-and-Reel-Stückzahlen erhältlich. Mit 1M Flash und 384k RAM haben Sie viel Platz für Ihren Code. Das Artemis-Modul läuft mit 48MHz mit einem 96MHz Turbo-Modus verfügbar und mit Bluetooth zu booten!

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For Raspberry Pi, ESP32 and nRF52 with Python, Arduino and Zephyr Bluetooth Low Energy (BLE) radio chips are ubiquitous from Raspberry Pi to light bulbs. BLE is an elaborate technology with a comprehensive specification, but the basics are quite accessible. A progressive and systematic approach will lead you far in mastering this wireless communication technique, which is essential for working in low power scenarios. In this book, you’ll learn how to: Discover BLE devices in the neighborhood by listening to their advertisements. Create your own BLE devices advertising data. Connect to BLE devices such as heart rate monitors and proximity reporters. Create secure connections to BLE devices with encryption and authentication. Understand BLE service and profile specifications and implement them. Reverse engineer a BLE device with a proprietary implementation and control it with your own software. Make your BLE devices use as little power as possible. This book shows you the ropes of BLE programming with Python and the Bleak library on a Raspberry Pi or PC, with C++ and NimBLE-Arduino on Espressif’s ESP32 development boards, and with C on one of the development boards supported by the Zephyr real-time operating system, such as Nordic Semiconductor's nRF52 boards. Starting with a very little amount of theory, you’ll develop code right from the beginning. After you’ve completed this book, you’ll know enough to create your own BLE applications.

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Kick off with the MAX1000 and VHDPlus Ready to Master FPGA Programming? In this guide, we’re diving into the world of Field Programmable Gate Arrays (FPGAs) – a configurable integrated circuit that can be programmed after manufacturing. Imagine bringing your ideas to life, from simple projects to complete microcontroller systems! Meet the MAX1000: a compact and budget-friendly FPGA development board packed with features like memory, user LEDs, push-buttons, and flexible I/O ports. It’s the ideal starting point for anyone wanting to learn about FPGAs and Hardware Description Languages (HDLs). In this book, you’ll get hands-on with the VHDPlus programming language – a simpler version of VHDL. We’ll work on practical projects using the MAX1000, helping you gain the skills and confidence to unleash your creativity. Get ready for an exciting journey! You’ll explore a variety of projects that highlight the true power of FPGAs. Let’s turn your ideas into reality and embark on your FPGA adventure – your journey starts now! Exciting Projects You’ll Find in This Book Arduino-Driven BCD to 7-Segment Display Decoder Use an Arduino Uno R4 to supply BCD data to the decoder, counting from 0 to 9 with a one-second delay Multiplexed 4-Digit Event Counter Create an event counter that displays the total count on a 4-digit display, incrementing with each button press PWM Waveform with Fixed Duty Cycle Generate a PWM waveform at 1 kHz with a fixed duty cycle of 50% Ultrasonic Distance Measurement Measure distances using an ultrasonic sensor, displaying the results on a 4-digit 7-segment LED Electronic Lock Build a simple electronic lock using combinational logic gates with push buttons and an LED output Temperature Sensor Monitor ambient temperature with a TMP36 sensor and display the readings on a 7-segment LED Downloads Software

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Recently, the development of a tiny chip called the ESP8266 has made it possible to interface any type of microcontroller to a Wi-Fi AP. The ESP8266 is a low-cost tiny Wi-Fi chip having fully built-in TCP/IP stack and a 32-bit microcontroller unit. This chip, produced by Shanghai based Chinese manufacturer Espressif System, is IEEE 802.11 b/g/n Wi-Fi compatible with on-chip program and data memory, and general purpose input-output ports. Several manufacturers have incorporated the ESP8266 chip in their hardware products (e.g. ESP-xx, NodeMCU etc) and offer these products as a means of connecting a microcontroller system such as the Android, PIC microcontroller or others to a Wi-Fi. The ESP8266 is a low-power chip and costs only a few Dollars. ESP8266 and MicroPython – Coding Cool Stuff is an introduction to the ESP8266 chip and describes the features of this chip and shows how various firmware and programming languages such as the MicroPython can be uploaded to the chip. The main aim of the book is to teach the readers how to use the MicroPython programming language on ESP8266 based hardware, especially on the NodeMCU. Several interesting and useful projects are given in the e-book (pdf) to show how to use the MicroPython in NodeMCU type ESP8266 hardware: Project “What shall I wear today?”: You will be developing a weather information system using a NodeMCU development board together with a Text-to-Speech processor module. Project “The Temperature and Humidity on the Cloud”: You will be developing a system that will get the ambient temperature and humidity using a sensor and then store this data on the cloud so that it can be accessed from anywhere. Project “Remote Web Based Control”: You will be developing a system that will remotely control two LEDs connected to a NodeMCU development board using an HTTP Web Server application.

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Kick off with the MAX1000 and VHDPlus Ready to Master FPGA Programming? In this guide, we’re diving into the world of Field Programmable Gate Arrays (FPGAs) – a configurable integrated circuit that can be programmed after manufacturing. Imagine bringing your ideas to life, from simple projects to complete microcontroller systems! Meet the MAX1000: a compact and budget-friendly FPGA development board packed with features like memory, user LEDs, push-buttons, and flexible I/O ports. It’s the ideal starting point for anyone wanting to learn about FPGAs and Hardware Description Languages (HDLs). In this book, you’ll get hands-on with the VHDPlus programming language – a simpler version of VHDL. We’ll work on practical projects using the MAX1000, helping you gain the skills and confidence to unleash your creativity. Get ready for an exciting journey! You’ll explore a variety of projects that highlight the true power of FPGAs. Let’s turn your ideas into reality and embark on your FPGA adventure – your journey starts now! Exciting Projects You’ll Find in This Book Arduino-Driven BCD to 7-Segment Display Decoder Use an Arduino Uno R4 to supply BCD data to the decoder, counting from 0 to 9 with a one-second delay Multiplexed 4-Digit Event Counter Create an event counter that displays the total count on a 4-digit display, incrementing with each button press PWM Waveform with Fixed Duty Cycle Generate a PWM waveform at 1 kHz with a fixed duty cycle of 50% Ultrasonic Distance Measurement Measure distances using an ultrasonic sensor, displaying the results on a 4-digit 7-segment LED Electronic Lock Build a simple electronic lock using combinational logic gates with push buttons and an LED output Temperature Sensor Monitor ambient temperature with a TMP36 sensor and display the readings on a 7-segment LED Downloads Software

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Getting started with the world’s best open-source PCB tool The latest iteration of KiCad, the world’s best free-to-use Printed Circuit Board tool, is packed with features usually found only in expensive commercial CAD tools. This modern, cross-platform application suite built around schematic and design editors, with auxiliary applications is a stable and mature PCB tool. KiCad 8 is a perfect fit for electronic engineers and makers. Here are the most significant improvements and features in KiCad 8, both over and under the hood: Modern user interface, completely redesigned from earlier versions Improved and customizable electrical and design rule checkers Theme editor allowing you to customize KiCad on your screen Ability to import projects from Eagle, CADSTART, and more Python scripting API Improved integrated SPICE circuit simulator Multi-sheet schematics Filters define selectable elements Enhanced interactive router helps you draw single tracks and differential pairs with precision New or enhanced tools to draw tracks, measure distances, tune track lengths, etc. Advanced interactive router Built-in bill of materials generator Realistic ray-tracing capable 3D viewer Customizable teardrops Plug-in manager for quick installation of themes, libraries and functionalities such as autorouters and BOM generators This book will teach you to use KiCad through a practical approach. It will help you become productive quickly and start designing your own boards. Example projects illustrate the basic features of KiCad, even if you have no prior knowledge of PCB design. The author describes the entire workflow from schematic entry to the intricacies of finalizing the files for PCB production and offers sound guidance on the process. Further full-fledged projects, of incremental difficulty, will be presented in a second book, together with a variety of advanced recipes.

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This is the second edition of a book aimed at engineers, scientists, and hobbyists who want to interface PCs with hardware projects using graphical user interfaces. Desktop and web-based applications are covered. The programming language used is Python 3, which is one of the most popular languages around: speed of programming being a key feature. The book has been revised and updated with an emphasis on getting the user to produce practical designs with ease – a text editor is all that is required to produce Python programs. Hardware interfacing is achieved using an Arduino Uno as a remote slave. A full description and source code of the communication interface is given in the book. The slave provides digital and analog input and outputs. Multiple Unos can be included in one project with all control code written in Python and running on a PC One project involves a PIC microcontroller with the code provided that can be loaded into the PIC using the Uno. The web applications and server are all implemented in Python, allowing you to access your electronic hardware over the Internet. The Raspberry Pi computer can be used as your web server. An introductory chapter is provided to get you started with using Linux. The book is written for use with Debian or variations including Mint or Ubuntu. All of the programs in the book are freely available, ready to use and experiment with by way of a download from Elektor.

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