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There are many so-called 'Arduino compatible' platforms on the market. The ESP8266 – in the form of the WeMos D1 Mini Pro – is one that really stands out. This device includes WiFi Internet access and the option of a flash file system using up to 16 MB of external flash memory. Furthermore, there are ample in/output pins (though only one analogue input), PWM, I²C, and one-wire. Needless to say, you are easily able to construct many small IoT devices! This book contains the following builds: A colourful smart home accessory refrigerator controller 230 V power monitor door lock monitor and some further spin-off devices. All builds are documented together with relevant background information for further study. For your convenience, there is a small PCB for most of the designs; you can also use a perf board. You don’t need to be an expert but the minimum recommended essentials include basic experience with a PC, software, and hardware, including the ability to surf the Internet and assemble PCBs. And of course: A handle was kept on development costs. All custom software for the IoT devices and PCB layouts are available for free download from at Elektor.com.

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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.

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Projects with Arduino, ESPHome, Home Assistant, and Raspberry Pi & Co. This e-book contains various example projects, beginning with an introduction to electronics. It also explains how to install Home Assistant on a Raspberry Pi, how to use indoor climate sensors for temperature and humidity, how to implement the MQTT protocol and other interfaces, and how to use ESPHome to integrate sensors and actuators into Home Assistant. Numerous video tutorials complement the book. Fundamentals of electrical engineering The book begins with an introduction to electrical engineering. You will learn the basics of voltage, current, resistors, diodes and transistors. Arduino and microcontrollers A complete section is dedicated to the Arduino Uno. You will get to know the structure, write your first programs and work on practical examples. Home Assistant and automation You will learn how to set up Home Assistant on a Raspberry Pi and how to use automations, scenes and devices. In addition, Zigbee, MQTT and ESP-NOW – important technologies for home automation – will be discussed. ESP8266, ESP32 and ESP32-CAM The popular ESP microcontrollers are covered in detail. A theoretical introduction is followed by practical projects that show you how to get the most out of these devices. Sensors and actuators The book explains the functionality and application of numerous sensors such as temperature and humidity sensors, motion detectors and RFID readers. For actuators, stepper motors, e-ink displays, servo motors and much more are covered. There are practical application examples for all devices. ESPHome This chapter shows you how to integrate sensors and actuators into Home Assistant without any programming effort. You will be guided step by step through the setup with ESPHome. LEDs and lighting technology In this chapter, you will learn about different types of LEDs and how they can be used. The basics of lighting technology are also explained. Node-RED A whole chapter is dedicated to Node-RED. You will learn the basics of this powerful tool and be guided step by step through its setup and use. Integrated Circuits (ICs) In electronics, there are numerous ICs that make our lives easier. You will get to know the most important ones and apply your knowledge in practical projects. Professional programming Advanced topics such as the correct use of buttons, the use of interrupts and the use of an NTP server for time synchronisation are covered in detail in this chapter. Downloads GitHub

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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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Projekte mit Arduino, ESPHome, Home Assistant und Raspberry Pi & Co Dieses E-Book enthält verschiedene Projektbeispiele und beginnt mit einer Einführung in die Elektronik. Es erklärt unter anderem, wie man Home Assistant auf einem Raspberry Pi installiert, wie man Raumklimasensoren für Temperatur und Luftfeuchtigkeit nutzt, das MQTT-Protokoll sowie weitere Schnittstellen einsetzt und ESPHome verwendet, um Sensoren und Aktoren in Home Assistant zu integrieren. Zahlreiche Video-Tutorials ergänzen das Buch. Grundlagen der Elektrotechnik Das Buch beginnt mit einer Einführung in die Elektrotechnik. Ihr lernt die Grundlagen von Spannung, Strom, Widerständen, Dioden und Transistoren. Arduino und Mikrocontroller Ein kompletter Abschnitt widmet sich dem Arduino Uno. Ihr lernt den Aufbau kennen, schreibt erste Programme und erarbeitet praktische Beispiele. Home Assistant und Automatisierung Ihr erfahrt, wie Home Assistant auf einem Raspberry Pi eingerichtet wird, und lernt den Umgang mit Automatisierungen, Szenen und Geräten. Zusätzlich wird auf Zigbee, MQTT und ESP-NOW eingegangen – wichtige Technologien für die Heimautomation. ESP8266, ESP32 und ESP32-CAM Die beliebten ESP-Mikrocontroller werden ausführlich behandelt. Nach einer theoretischen Einführung folgen praktische Projekte, die euch zeigen, wie ihr das Beste aus diesen Geräten herausholen könnt. Sensoren und Aktoren Das Buch erklärt die Funktionsweise und Anwendung zahlreicher Sensoren wie Temperatur- und Luftfeuchtigkeitssensoren, Bewegungsmelder und RFID-Reader. Bei den Aktoren werden Schrittmotoren, e-ink Displays, Servo-Motoren und vieles mehr beleuchtet. Zu allen Geräten gibt es praxisnahe Anwendungsbeispiele. ESPHome Dieses Kapitel zeigt euch, wie ihr Sensoren und Aktoren ohne Programmieraufwand in Home Assistant integriert. Ihr werdet Schritt für Schritt durch die Einrichtung mit ESPHome geführt. LEDs und Lichttechnik In diesem Kapitel lernt ihr verschiedene LED-Typen und deren Einsatzmöglichkeiten kennen. Grundlagen der Lichttechnik werden ebenfalls erklärt. Node-RED Ein eigenes Kapitel ist Node-RED gewidmet. Ihr erlernt die Grundlagen dieses leistungsstarken Tools und werdet Schritt für Schritt durch die Einrichtung und Nutzung geführt. Integrierte Schaltkreise (ICs) In der Elektronik gibt es zahlreiche ICs, die uns das Leben erleichtern. Ihr lernt die wichtigsten kennen und wendet das Wissen in praktischen Projekten an. Programmieren für Profis Fortgeschrittene Themen wie die korrekte Verwendung von Tastern, der Einsatz von Interrupts und die Nutzung eines NTP-Servers für Zeit-Synchronisation werden in diesem Kapitel detailliert behandelt. Downloads GitHub

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The XIAO ESP32-C3 board combines the ultra-compact form factor of the XIAO series with the full capabilities of the ESP32-C3 chip, including integrated Wi-Fi and Bluetooth 5.0. This book is a comprehensive, hands-on guide to getting the most out of this powerful yet affordable development board. The author takes readers from the fundamentals to advanced projects. Starting with LED blinking and dimming, the book progresses to ADC and PWM for precise sensor interfacing and PWM-controlled lighting effects before moving on to building practical, real-world applications, including: A Wi-Fi weather station with an OLED display and real-time online weather data An ultrasonic parking assistant with audible feedback A refrigerator monitoring probe with climate sensing and Deep Sleep for years of battery operation A retro Pong game controlled by a touch-free sensor A microphone-based party app that responds to claps And much more: lighting control, reaction-time measurement, mains frequency analysis, soil moisture sensing, ambient LED lighting, and 7-segment displays

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Develop your own custom home automation devices Espressif's ESP8266 and ESP32 microcontrollers have brought DIY home automation to the masses. However, not everyone is fluent in programming these microcontrollers with Espressif's C/C++ SDK, the Arduino core, or MicroPython. This is where ESPHome comes into its own: with this project, you don’t program your microcontroller but configure it. This book demonstrates how to create your own home automation devices with ESPHome on an ESP32 microcontroller board. You’ll learn how to combine all kinds of electronic components and automate complex behaviours. Your devices can work completely autonomously, and connect over Wi-Fi to your home automation gateways such as Home Assistant or MQTT broker. By the end of this book, you will be able to create your own custom home automation devices the way you want. Thanks to ESPHome and the ESP32, this is within everyone’s grasp. Set up an ESPHome development environment and create maintainable configurations Use buttons and LEDs Sound a buzzer and play melodies Read measurements from various types of sensors Communicate over a short distance with NFC, infrared light, and Bluetooth Low Energy Show information on various types of displays Downloads Software

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Der ESP8266 von Espressif ist ein Wi-Fi-Mikrochip mit vollem TCP/IP-Stack und Mikrocontroller-Fähigkeit. Es hat mit seinem niedrigen Preis Wellen in der Herstellergemeinschaft geschlagen. Aber viele Entwickler waren unzufrieden mit dem hohen Stromverbrauch von ESP8266. Der ESP32, ausgestattet mit einem ULP (Ultra Low Power) Coprozessor, bietet eine Lösung. Dieses E-Book enthält eine Reihe von Projekten mit ESP32 & ESP8266 sowie ein Interview mit dem CEO von Espressif Teo Swee Ann. Artikel ESP32 für den Einsatz in Geräten der Industrie 4.0 Scrollende Nachrichtenanzeige, 512 LEDs per WLAN mit ESP-12F ansteuern Das vernetzte Treibhaus, IoT-Modellprojekt mit MQTT und Node-RED VFD-Röhren-Uhr mit ESP32, Internet-Zeit auf Vintage-Displays ESP32 stromsparend, die Programmierung des ULP-Coprozessors DCF77-Emulator mit ESP8266, DCF durch Internet-Zeit ersetzen Was steckt hinter dem berühmtem ESP8266? WLAN-Thermostat, flexible und programmierbare Temperatursteuerung Timer für den WLAN-Thermostat, sieben Kanäle mit atomarer Genauigkeit Schweizer Taschenmesser für Mikrocontroller, PlatformIO als universelles Programmier-Tool ESP32 für Power-User, native Programmierung Weather-Display, aktuelle Wetterdaten auf einem LC-Display darstellen GoNotify, ein flexibles IoT-Sensorinterface. Einfach in die Cloud. Der große Bruder des ESP8266, erste Schritte mit dem ESP32 und der Arduino-IDE MicroPython, Python für kleine Systeme RGBDigit Clock, farbenfrohe 7-Segment-Displays zeigen Zeit und Klima USB-Programmieradapter für die ESP-Module von Espressif Heizkesselmonitor mit ESP8266, Haustechnik für die Energiewende WLAN für Mikrocontroller, steuern mit dem ESP8266 Die Rückkehr des WLAN-Controller-Boards, Smartphone steuert IoT-Objekte WLAN kompakt und autonom, oder: Wie man den ESP8266 auch ohne MCU einsetzen kann

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Design IoT Projects with Raspberry Pi, Arduino and ESP32 The Internet of Things (IoT) is becoming a major application area for embedded systems. As a result, more and more people are becoming interested in learning about embedded design and programming. Technical colleges and universities are moving away from legacy 8 and 16-bit microcontrollers and are introducing 32-bit embedded microcontrollers to their curriculums. Many IoT applications demand precision, high processing power, and low power consumption. Produced by IBM, Node-RED is an open-source visual editor for wiring the Internet of Things. Node-RED comes with a large number of nodes to handle a multitude of tasks. The required nodes are selected and joined together to perform a particular task. Node-RED is based on flow type programming where nodes are configured and joined together to form an application program. There are nodes for performing complex tasks, including web access, Twitter, E-mail, HTTP, Bluetooth, MQTT, controlling GPIO ports, etc. One particularly nice aspect of Node-RED is that the programmer does not need to learn how to write complex programs. For example, an email can be sent by simply joining nodes together and writing only a few lines of code. The aim of this book is to teach how Node-RED can be used in projects. The main hardware platform used with most of the projects in this book is Raspberry Pi 4. Chapters are included to show how Node-RED can be also be used with Arduino Uno, ESP32 DevKitC, and the ESP8266 NodeMCU microcontroller development boards.

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Der ESP8266 ist ein programmierbares WLAN-Funkmodul mit zahlreichen Schnittstellen wie UART, I²C und SPI. Das Board ist sehr preiswert und bereits für unter 3 Euro verfügbar. Die UART-Schnittstelle sorgt dabei für eine einfache Integration in Mikrocontrollerprojekte. Das ESP8266-Modul kann hervorragend mit dem Arduino zusammenarbeiten und ermöglicht ihm über die serielle Schnittstelle den Zugang zum Netzwerk und Internet. Es existiert eine Implementierung des ESP8266-Moduls in die Arduino-Entwicklungsumgebung. Aber auch als Standalone-Modul kann das ESP8266 eigenständig Programme abarbeiten und mit dem Internet kommunizieren, da es über einen eigenen Mikroprozessor und Speicher auf dem Board verfügt.Mittlerweile existiert auch das Entwickler-Board NodeMCU, auf dem der ESP8266-Chip mit einem USB/Seriell-Adapter versehen wurde. Mit den integrierten Sockelleisten ist ein direkter Einsatz auf üblichen Breadboards möglich. Über den USB-Anschluss wird das Board mit Strom versorgt und kann über eine Software direkt angesprochen werden. Auch das NodeMCU-Board ist sehr preiswert und bereits für unter 5 Euro zu haben.Der Bestseller-Autor Erik Bartmann hat sich ausführlich mit dem ESP8266 und dem NodeMCU beschäftigt. Heraus gekommen ist dabei Das ESP8266-Praxisbuch, in dem er die Leser Schritt für Schritt in die Arbeit mit diesen neuen, preiswerten Bauteilen einführt, mögliche technische Stolpersteine ausführlich behandelt und in zahlreichen Projekten die Praxistauglichkeit – angefangen bei einem selbst gebauten Webserver bis hin zu klugen Relay-Ansteuerung – belegt.

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