This book is intended for electronics enthusiasts and professionals alike, who want a much deeper understanding of the incredible technology conquests over the pre-digital decades that created video. It details evolution of analogue video electronics and technology from the first electro-mechanical television, through advancements in Cathode Ray Tubes, transistor circuits and signal processing, up to the latest analogue, colour-rich TV, entertainment devices and calibration equipment.
Key technological advances that enabled monochrome video and, eventually, colour are explained. The importance, compromises and techniques of maintaining crucial backward legacy compatibilities are described. The generation, signal processing and playback of analogue video signals in numerous capture, display, recording and playback devices together with operating principles and practices are examined. Technical and, often, political merits and deficiencies of key national and international video standards are highlighted. Several formats are shown to win and ultimately to co-exist.
This book begins at fairly basic levels; concepts are introduced with human physiological perceptions of light and colour explained. This leads to the subject matter of luminance and chrominance; their equations and the circuits to process. There is full, detailed analysis of waveform shapes and timings inside video equipment and relevant popular connections e.g. S-video. Several analogue video projects which you can build yourself are also included in this book; with schematics, circuit board layouts and calibration steps to help you obtain the best results. The book makes use of many colour pages where the subject matter demands it (e.g. test cards).
If you really want a deeper understanding of analogue video then this book is for you!
39 Experiments with Raspberry Pi and Arduino
This book is about Raspberry Pi 3 and Arduino camera projects.
The book explains in simple terms and with tested and working example projects, how to configure and use a Raspberry Pi camera and USB based webcam in camera-based projects using a Raspberry Pi.
Example projects are given to capture images, create timelapse photography, record video, use the camera and Raspberry Pi in security and surveillance applications, post images to Twitter, record wildlife, stream live video to YouTube, use a night camera, send pictures to smartphones, face and eye detection, colour and shape recognition, number plate recognition, barcode recognition and many more.
Installation and use of popular image processing libraries and software including OpenCV, SimpleCV, and OpenALPR are explained in detail using a Raspberry Pi. The book also explains in detail how to use a camera on an Arduino development board to capture images and then save them on a microSD card.
All projects given in this book have been fully tested and are working. Program listings for all Raspberry Pi and Arduino projects used in this book are available for download on the Elektor website.
Über 40 vollständig getestete ESP32-Projekte mit Arduino IDE und der LVGL-Grafikbibliothek
Dieses Bundle enthält das ESP32 Cheap Yellow Display (CYD) – ein kompaktes Entwicklungsboard, das einen Standard-ESP32-Mikrocontroller mit einem 320 x 240 Pixel großen TFT-Farbdisplay kombiniert. Das Board verfügt außerdem über mehrere Anschlüsse für GPIO, serielle Kommunikation (TX/RX), Strom und Masse. Das integrierte Display ist ein großer Vorteil und ermöglicht die Erstellung komplexer, grafikbasierter Projekte ohne externe LCDs oder Displays.
Das Begleitbuch stellt die Hardware und die integrierten Anschlüsse des CYD-Boards detailliert vor. Es bietet eine Reihe von Projekten für Anfänger und Fortgeschrittene, die mit der beliebten Arduino IDE 2.0 entwickelt wurden. Sowohl grundlegende Grafikfunktionen als auch die leistungsstarke LVGL-Grafikbibliothek werden behandelt, und praktische Projekte veranschaulichen jeden Ansatz.
Alle enthaltenen Projekte wurden vollständig getestet und sind sofort einsatzbereit. Das Buch enthält Blockdiagramme, Schaltpläne, vollständige Codelisten und Schritt-für-Schritt-Erklärungen. Mit der LVGL-Bibliothek können Leser moderne, vollfarbige grafische Benutzeroberflächen mit Widgets wie Schaltflächen, Beschriftungen, Schiebereglern, Kalendern, Tastaturen, Diagrammen, Tabellen, Menüs, Animationen und mehr erstellen.
ESP32 Cheap Yellow Display Board
Dieses Entwicklungsboard (auch bekannt als "Cheap Yellow Display") wird vom ESP-WROOM-32 angetrieben, einem Dual-Core-MCU mit integrierten Wi-Fi- und Bluetooth-Funktionen. Es arbeitet mit einer Hauptfrequenz von bis zu 240 MHz, mit 520 KB SRAM, 448 KB ROM und einem 4 MB Flash-Speicher. Das Board verfügt über ein 2,8" Display mit einer Auflösung von 240x320 und Resistive Touch.
Darüber hinaus enthält die Platine einen Steuerkreis für die Hintergrundbeleuchtung, einen Schaltkreis für die Berührungssteuerung, einen Schaltkreis für die Lautsprecheransteuerung, einen lichtempfindlichen Schaltkreis und einen RGB-LED-Steuerschaltkreis. Es bietet außerdem einen TF-Kartensteckplatz, eine serielle Schnittstelle, eine DHT11-Schnittstelle für Temperatur- und Feuchtigkeitssensoren und zusätzliche E/A-Anschlüsse.
Das Modul unterstützt die Entwicklung in Arduino IDE, ESP-IDE, MicroPython und Mixly.
Anwendungen
Bildübertragung für Smart Home-Gerät
Drahtlose Überwachung
Intelligente Landwirtschaft
QR-Funkerkennung
Signal des drahtlosen Positionierungssystems
Und andere IoT-Anwendungen
Technische Daten
Mikrocontroller
ESP-WROOM-32 (Dual-Core-MCU mit integriertem WLAN und Bluetooth)
Frequenz
Bis zu 240 MHz (Rechenleistung bis zu 600 DMIPS)
SRAM
520 KB
ROM
448 KB
Flash
4 MB
Betriebsspannung
5 V
Stromverbrauch
ca. 115 mA
Display
2,8" TFT-Farbbildschirm (240 x 320)
Touch
Resistive Touch
Treiberchip
ILI9341
Abmessungen
50 x 86 mm
Gewicht
50 g
Downloads
GitHub
Inhalt des Bundles
The ESP32 Cheap Yellow Display Book (Einzelpreis: 35 €)
ESP32 Cheap Yellow Display Board (Einzelpreis: 25 €)
1x ESP32 Dev-Board mit 2,8" Display und Acrylgehäuse
1x Touch-Stift
1x Verbindungskabel
1x USB-Kabel
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.
Dieses Trägerboard kombiniert ein 2,4"-TFT-Display, sechs adressierbare LEDs, einen Onboard-Spannungsregler, einen 6-poligen IO-Anschluss und einen microSD-Steckplatz mit dem M.2-Steckplatz, sodass es mit kompatiblen Prozessorboards in unserem MicroMod-Ökosystem verwendet werden kann. Außerdem haben wir dieses Trägerboard mit dem ATtiny84 von Atmel mit 8kb programmierbarem Flash bestückt. Dieser kleine Kerl ist vorprogrammiert, um mit dem Prozessor über I2C zu kommunizieren und Tastendrücke zu lesen.
Features
M.2 MicroMod-Anschluss
240 x 320 Pixel, 2,4" TFT-Display
6 adressierbare APA102 LEDs
Magnetischer Buzzer
USB-C-Anschluss
3,3 V 1 A Spannungsregler
Qwiic-Anschluss
Boot/Reset-Tasten
RTC-Backup-Batterie & Ladeschaltung
microSD
Phillips #0 M2,5 x 3 mm Schraube enthalten
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.
Learn to program displays and GUIs with Python
This book is about Raspberry Pi 4 display projects. The book starts by explaining how to install the latest Raspbian operating system on an SD card, and how to configure and use the GPIO ports.
The core of the book explains the following topics in simple terms with fully tested and working example projects:
Simple LED projects
Bar graph LED projects
Matrix LED projects
Bitmap LED projects
LED strips
LCDs
OLED displays
E-paper displays
TFT displays
7-inch touch screen
GUI Programming with Tkinder
One unique feature of this book is that it covers almost all types of display that readers will need to use in their Raspberry Pi based projects. The operation of each project is fully given, including block diagrams, circuit diagrams, and commented full program listings. It is therefore an easy task to convert the given projects to run on other popular platforms, such as Arduino or PIC microcontrollers.
Python program listings of all Raspberry Pi projects developed in this book are available for download at Elektor.com. Readers can use these programs in their projects. Alternatively, they can modify the programs to suit their applications.
The newcomer to Microchip’s PIC microcontrollers invariably gets an LED to flash as their first attempt to master this technology. You can use just a simple LED indicator in order to show that your initial attempt is working, which will give you confidence to move forward. This is how the book begins — simple programs to flash LEDs, and eventually by stages to use other display indicators such as the 7-segment display, alphanumeric liquid crystal displays and eventually a colour graphic LCD.
As the reader progresses through the book, bigger and upgraded PIC chips are introduced, with full circuit diagrams and source code, both in assembler and C.
In addition, a small tutorial is included using the MPLAB programming environment, together with the EAGLE schematic and PCB design package to enable readers to create their own designs using the book’s many case studies as working examples to work from.
Der Raspberry Pi 5 verfügt über zwei vierspurige MIPI-Anschlüsse, von denen jeder entweder eine Kamera oder ein Display unterstützen kann. Diese Anschlüsse verwenden dasselbe 22-polige "Mini"-FPC-Format mit 0,5 mm Raster wie das Compute Module Development Kit und erfordern Adapterkabel für den Anschluss an die 15-poligen "Standard"-Anschlüsse mit 1 mm Raster an aktuellen Raspberry Pi Kamera- und Display-Produkten.
Diese Mini-zu-Standard-Adapterkabel für Kameras und Displays (beachten Sie, dass ein Kamerakabel nicht mit einem Display verwendet werden sollte und umgekehrt) sind in den Längen 200 mm, 300 mm und 500 mm erhältlich.
Der Raspberry Pi 5 verfügt über zwei vierspurige MIPI-Anschlüsse, von denen jeder entweder eine Kamera oder ein Display unterstützen kann. Diese Anschlüsse verwenden dasselbe 22-polige "Mini"-FPC-Format mit 0,5 mm Raster wie das Compute Module Development Kit und erfordern Adapterkabel für den Anschluss an die 15-poligen "Standard"-Anschlüsse mit 1 mm Raster an aktuellen Raspberry Pi Kamera- und Display-Produkten.
Diese Mini-zu-Standard-Adapterkabel für Kameras und Displays (beachten Sie, dass ein Kamerakabel nicht mit einem Display verwendet werden sollte und umgekehrt) sind in den Längen 200 mm, 300 mm und 500 mm erhältlich.
,
von Harry Baggen
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