Zoekresultaten voor "arduino or pro or portenta or h7"
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Elektor Academy Pro ESP32 with MicroPython (programmeercursus)
Deze complete programmeercursus voor de ESP32-microcontroller bevat een leerboek, een componentenkit, praktijkgerichte projecten en een uitgebreide online cursus met simulaties. Ideaal om stap voor stap embedded systems te leren programmeren in MicroPython via een praktische, hands-on aanpak. Een praktische introductie tot embedded systems met de ESP32 Deze cursus is ontworpen voor beginners in embedded systems die op zoek zijn naar een gestructureerde en voorbeeldgerichte start. Een kit met LED’s en weerstanden, schakelaars, sensoren en actuatoren, displays, een breadboard en draden is inbegrepen. Deze worden in de cursus gebruikt om voorbeeldtoepassingen te demonstreren. Er is geen voorkennis van Arduino of embedded ontwikkeling vereist. Elke sectie bevat praktische voorbeelden en mini-projecten om belangrijke concepten te versterken en verdere verkenning te stimuleren. Aan het einde van de cursus kunt u niet alleen de voorbeelden reproduceren, maar ook uitbreiden met uw eigen ideeën en toepassingen. Wat leert u? Microcontrollers programmeren in MicroPython met de ESP32 met behulp van de Thonny IDE Werken met digitale I/O, knoppen en encoders uitlezen, LED’s en relais aansturen Analoge ingangen, spanningen en sensoren uitlezen Genereren van analoge uitgangssignalen en PWM Gebruik van seriële communicatie zoals UART, I²C en SPI om displays aan te sturen en digitale sensoren en SD-kaarten uit te lezen Tijdbeheer Werken met interrupts Realtime sensorinput en besturing via knoppen, LED’s en displays Aansturen van actuatoren zoals relais en servomotoren Voor wie is dit? Studenten en zelflerenden die embedded systems willen ontdekken Makers en IoT-enthousiastelingen die hun hardwarevaardigheden willen verbeteren Docenten en trainers die kant-en-klaar lesmateriaal zoeken Wat zit er in de doos? Toegang tot de volledige cursus op het Elektor Academy Pro leerplatform ESP32 microcontrollerboard + USB-kabel Boek: Programming Microcontrollers in MicroPython Downloadbare projectbestanden voor elke module Componentenkit: 2× LED, rood, 5 mm LED, groen, 5 mm 3× weerstand, 470 Ω, 0,25 W LDR Potentiometer, 10 kΩ, lineair Drukknop Rotary encoder module Relaismodule DHT22 temperatuur- en vochtigheidssensor TM1637-compatibel 4-digit 7-segment display MPU-6050 IMU met headers SSD1306-compatibel I²C OLED display Micro SD-kaartadapter met header Buzzer SG90 micro servo ILI9341-compatibel SPI 240×320 TFT display 20× jumper wires Breadboard Alle programmeercursussen (en verschillen in inhoud) Cursus Arduino Raspberry Pi Pico with Arduino C/C++ ESP32 with Arduino C/C++ Raspberry Pi Pico with MicroPython ESP32 with MicroPython Online cursus Access to Arduino Course Access to Pico with Arduino C/C++ Course Access to ESP32 with Arduino C/C++ Course Access to Pico with MicroPython Course Access to ESP32 with MicroPython Course Board Uno R3 Raspberry Pi Pico ESP32 Raspberry Pi Pico ESP32 Boek Programming Microcontrollers in C/C++ Using Arduino Programming Microcontrollers in C/C++ Using Arduino Programming Microcontrollers in C/C++ Using Arduino Programming Microcontrollers in MicroPython Programming Microcontrollers in MicroPython Kit 40-delige componenten-kit 40-delige componenten-kit 40-delige componenten-kit 40-delige componenten-kit 40-delige componenten-kit
€ 69,95
Leden: € 62,96
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Elektor Academy Pro MicroPython for STM32 (programmeercursus)
Deze complete cursus programmeren voor STM32-microcontrollers omvat een leerboek, een onderdelenpakket, praktijkgerichte projecten en een uitgebreide online cursus. Het is de ideale manier om stap voor stap te leren programmeren voor embedded systemen met MicroPython, via een praktische en hands-on aanpak. Een praktische introductie tot embedded systemen met de STM32 Deze cursus is bedoeld voor iedereen die nog geen ervaring heeft met embedded systemen en op zoek is naar een gestructureerde, op voorbeelden gebaseerde manier om aan de slag te gaan. Er wordt een onderdelenpakket meegeleverd met onder meer leds, weerstanden, schakelaars, sensoren, actuatoren, displays, een breadboard en bedrading. Deze onderdelen worden in de cursus gebruikt om praktijkvoorbeelden te demonstreren. Er is geen voorkennis van MicroPython of embedded development vereist. Elk onderdeel bevat praktische voorbeelden en miniprojecten die zijn ontworpen om de belangrijkste concepten te verankeren en uit te nodigen tot verdere verdieping. Aan het einde van de cursus ben je niet alleen in staat om de voorbeelden na te maken, maar kun je er ook op voortbouwen met je eigen ideeën en toepassingen. Wat leert u? Microcontrollerprogrammering in MicroPython op de STM32 met behulp van de Thonny IDE Werken met digitale I/O, knoppen en encoders uitlezen, LED’s en relais aansturen Analoge ingangen, spanningen en sensoren uitlezen Genereren van analoge uitgangssignalen en PWM Gebruik van seriële communicatie zoals UART, I²C en SPI om displays aan te sturen en digitale sensoren en SD-kaarten uit te lezen Tijdbeheer Werken met interrupts Realtime sensorinput en besturing via knoppen, LED’s en displays Aansturen van actuatoren zoals relais en servomotoren Voor wie is dit? Studenten en zelflerenden die embedded systems willen ontdekken Makers en IoT-enthousiastelingen die hun hardwarevaardigheden willen verbeteren Docenten en trainers die kant-en-klaar lesmateriaal zoeken Wat zit er in de doos? Toegang tot de volledige cursus op het Elektor Academy Pro leerplatform STM32 NUCLEO-F411RE microcontrollerboard Boek: MicroPython for STM3 Downloadbare projectbestanden voor elke module Componentenkit: 2× LED, rood, 5 mm LED, groen, 5 mm 3× weerstand, 470 Ω, 0,25 W LDR Potentiometer, 10 kΩ, lineair Drukknop Rotary encoder module Relaismodule DHT22 temperatuur- en vochtigheidssensor TM1637-compatibel 4-digit 7-segment display MPU-6050 IMU met headers SSD1306-compatibel I²C OLED display Micro SD-kaartadapter met header Buzzer SG90 micro servo ILI9341-compatibel SPI 240×320 TFT display 20× jumper wires Breadboard
€ 99,95€ 84,95Beste prijs
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Elektor Bundles Logic Analyzers in Practice (Bundel)
Boek: Logic Analyzers in Practice 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. 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. USB Logic Analyzer (8-ch, 24 MHz) Deze USB Logic Analyzer is een 8-kanaals logic analyzer met elke ingang bedoeld voor het op twee manieren opnemen van analoge data. Hij is perfect voor het debuggen en analyseren van signalen zoals I²C, UART, SPI, CAN en 1-Wire. De analyzer bemonstert een digitale ingang die is aangesloten op een te testen apparaat (DUT) met een hoge bemonsteringssnelheid. De aansluiting op de PC gaat via USB. Specificaties Kanalen 8 digitale kanalen Maximale bemonsteringssnelheid 24 MHz Maximale ingangsspanning 0 V ~ 5 V Bedrijfstemperatuur 0°C ~ 70°C Ingangsimpedantie 1 MΩ || 10 pF Ondersteunde protocollen I²C, SPI, UART, CAN, 1-wire, enz. PC-aansluiting USB Afmetingen 55 x 28 x 14 mm Downloads Software Deze bundel bevat: Boek "Logic Analyzers in Practice" (normale prijs: € 35) USB Logic Analyzer (8-kanaals, 24 MHz) (normale prijs: € 20) USB-kabel Jumper Draad Lintkabel
€ 54,95€ 44,95Beste prijs
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Elektor Publishing Mikrocontroller-Praxiskurs für Arduino-Fortgeschrittene
32 neue Projekte, praktische Beispiele und Übungen mit dem Elektor Arduino Nano MCCAB Trainingsboard Die Elektronik und die Mikrocontrollertechnik bieten die Möglichkeit, kreativ tätig zu sein. Mit diesem Mikrocontroller-Praxiskurs besteht die Möglichkeit, eigene Arduino-Projekte zu realisieren und solche Erfolgsmomente erleben zu können. Im Idealfall funktioniert beim ersten Einschalten alles so, wie man es sich vorgestellt hat. In der Praxis läuft es dagegen selten wie erwartet. Dann braucht man Kenntnisse, um den Grund für das Nichtfunktionieren effizient suchen und finden zu können. In diesem Buch für Fortgeschrittene steigen wir tief in die Welt der Mikrocontroller und der Arduino IDE ein, um neue Verfahren und Details kennen zu lernen, und erfolgreich noch anspruchsvollere Situationen angehen und lösen zu können. Mit diesem Buch gibt der Autor dem Leser das nötige Rüstzeug, um eigenständig Projekte zu kreieren und auch schnell Fehler finden zu können. Anstatt nur fertige Lösungen zu bieten, erklärt er die Hintergründe, die verwendete Hardware und die eventuell benötigten Tools. Er stellt Aufgaben, bei denen der Leser seine eigene Kreativität einbringt und den Arduino-Sketch selbst schreibt. Falls man einmal keine vernünftige Idee hat und nicht weiterkommt, gibt es natürlich zu jedem Projekt und zu jeder Aufgabe einen Lösungsvorschlag mit zugehöriger Software, der im Buch ausführlich kommentiert und erklärt wird. Sie erfahren mit diesem Praxiskurs mehr über das Innenleben des Arduino Nano und des darauf befindlichen Mikrocontrollers. Sie lernen Hardware-Module kennen, mit denen Sie neue interessante Projekte realisieren werden. Sie beschäftigen sich mit Softwareverfahren wie z. B. "Zustandsmaschinen", durch deren Anwendung sich Aufgabenstellungen oft einfacher und übersichtlicher lösen lassen. Die zahlreichen praktischen Projekt- und Übungs-Sketche realisieren wir wieder auf dem vom "Mikrocontroller-Praxiskurs für Arduino-Einsteiger" bekannten MCCAB Trainingsboard, das die gesamte Hardware-Peripherie und die Bedienungselemente enthält, die wir für die Ein-/Ausgabe-Operationen unserer Sketche benötigen. Leser, die das MCCAB Trainingsboard noch nicht besitzen, können die benötigte Hardware separat erwerben, oder alternativ auch auf einem Breadboard aufbauen.
€ 49,95
Beste prijs
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Elektor Academy Pro Raspberry Pi Pico with MicroPython (programmeercursus)
Deze complete microcontroller-programmeercursus op basis van de Raspberry Pi Pico bevat een leerboek, een componentenkit, praktische projecten en een uitgebreide online cursus met simulaties. Ideaal om embedded systems stap voor stap te leren programmeren in MicroPython via een praktische hands-on aanpak. Een praktische introductie tot embedded systems met de Raspberry Pi Pico Deze cursus is ontworpen voor beginners in embedded systems die op zoek zijn naar een gestructureerde en voorbeeldgerichte start. Een kit met LED’s en weerstanden, schakelaars, sensoren en actuatoren, displays, een breadboard en draden is inbegrepen. Deze worden in de cursus gebruikt om voorbeeldtoepassingen te demonstreren. Er is geen voorkennis van Arduino of embedded ontwikkeling vereist. Elke sectie bevat praktische voorbeelden en mini-projecten om belangrijke concepten te versterken en verdere verkenning te stimuleren. Aan het einde van de cursus kunt u niet alleen de voorbeelden reproduceren, maar ook uitbreiden met uw eigen ideeën en toepassingen. Wat leert u? Microcontrollerprogrammering in MicroPython met de Raspberry Pi Pico met behulp van de Thonny IDE Werken met digitale I/O, knoppen en encoders uitlezen, LED’s en relais aansturen Analoge ingangen, spanningen en sensoren uitlezen Genereren van analoge uitgangssignalen en PWM Gebruik van seriële communicatie zoals UART, I²C en SPI om displays aan te sturen en digitale sensoren en SD-kaarten uit te lezen Tijdbeheer Werken met interrupts Realtime sensorinput en besturing via knoppen, LED’s en displays Aansturen van actuatoren zoals relais en servomotoren Voor wie is dit? Studenten en zelflerenden die embedded systems willen ontdekken Makers en IoT-enthousiastelingen die hun hardwarevaardigheden willen verbeteren Docenten en trainers die kant-en-klaar lesmateriaal zoeken Wat zit er in de doos? Toegang tot de volledige cursus op het Elektor Academy Pro leerplatform Raspberry Pi Pico microcontrollerboard + USB-kabel Boek: Programming Microcontrollers in MicroPython Downloadbare projectbestanden voor elke module Componentenkit: 2× LED, rood, 5 mm LED, groen, 5 mm 3× weerstand, 470 Ω, 0,25 W LDR Potentiometer, 10 kΩ, lineair Drukknop Rotary encoder module Relaismodule DHT22 temperatuur- en vochtigheidssensor TM1637-compatibel 4-digit 7-segment display MPU-6050 IMU met headers SSD1306-compatibel I²C OLED display Micro SD-kaartadapter met header Buzzer SG90 micro servo ILI9341-compatibel SPI 240×320 TFT display 20× jumper wires Breadboard Alle programmeercursussen (en verschillen in inhoud) Cursus Arduino Raspberry Pi Pico with Arduino C/C++ ESP32 with Arduino C/C++ Raspberry Pi Pico with MicroPython ESP32 with MicroPython Online cursus Access to Arduino Course Access to Pico with Arduino C/C++ Course Access to ESP32 with Arduino C/C++ Course Access to Pico with MicroPython Course Access to ESP32 with MicroPython Course Board Uno R3 Raspberry Pi Pico ESP32 Raspberry Pi Pico ESP32 Boek Programming Microcontrollers in C/C++ Using Arduino Programming Microcontrollers in C/C++ Using Arduino Programming Microcontrollers in C/C++ Using Arduino Programming Microcontrollers in MicroPython Programming Microcontrollers in MicroPython Kit 40-delige componenten-kit 40-delige componenten-kit 40-delige componenten-kit 40-delige componenten-kit 40-delige componenten-kit
€ 69,95
Leden: € 62,96
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Elektor Publishing The CAN Bus Companion
Projects with Arduino Uno & Raspberry Pi with Examples for the MCP2515 CAN Bus Interface Module This book details the use of the Arduino Uno and the Raspberry Pi 4 in practical CAN bus based projects. Using either the Arduino Uno or the Raspberry Pi with off-the-shelf CAN bus interface modules considerably ease developing, debugging, and testing CAN bus based projects. This book is written for students, practicing engineers, enthusiasts, and for everyone else wanting to learn more about the CAN bus and its applications. The book assumes that the reader has some knowledge of basic electronics. Knowledge of the C and Python programming languages and programming the Arduino Uno using its IDE and Raspberry Pi will be useful, especially if the reader intends to develop microcontroller-based projects using the CAN bus. The book should be a useful source of reference material for anyone interested in finding answers to questions such as: What bus systems are available for the automotive industry? What are the principles of the CAN bus? How can I create a physical CAN bus? What types of frames (or data packets) are available in a CAN bus system? How can errors be detected in a CAN bus system and how dependable is a CAN bus system? What types of CAN bus controllers exist? How do I use the MCP2515 CAN bus controller? How do I create 2-node Arduino Uno-based CAN bus projects? How do I create 3-node Arduino Uno-based CAN bus projects? How do I set the acceptance masks and acceptance filters? How do I analyze data on the CAN bus? How do I create 2-node Raspberry Pi-based CAN bus projects? How do I create 3-node Raspberry Pi-based CAN bus projects?
€ 39,95
Leden: € 35,96
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Elektor Digital PID-based Practical Digital Control with Raspberry Pi and Arduino Uno (E-book)
The Arduino Uno is an open-source microcontroller development system encompassing hardware, an Integrated Development Environment (IDE), and a vast number of libraries. It is supported by an enormous community of programmers, electronic engineers, enthusiasts, and academics. The libraries in particular really smooth Arduino programming and reduce programming time. What’s more, the libraries greatly facilitate testing your programs since most come fully tested and working. The Raspberry Pi 4 can be used in many applications such as audio and video media devices. It also works in industrial controllers, robotics, games, and in many domestic and commercial applications. The Raspberry Pi 4 also offers Wi-Fi and Bluetooth capability which makes it great for remote and Internet-based control and monitoring applications. This book is about using both the Raspberry Pi 4 and the Arduino Uno in PID-based automatic control applications. The book starts with basic theory of the control systems and feedback control. Working and tested projects are given for controlling real-life systems using PID controllers. The open-loop step time response, tuning the PID parameters, and the closed-loop time response of the developed systems are discussed together with the block diagrams, circuit diagrams, PID controller algorithms, and the full program listings for both the Raspberry Pi and the Arduino Uno. The projects given in the book aim to teach the theory and applications of PID controllers and can be modified easily as desired for other applications. The projects given for the Raspberry Pi 4 should work with all other models of Raspberry Pi family. The book covers the following topics: Open-loop and closed-loop control systems Analog and digital sensors Transfer functions and continuous-time systems First-order and second-order system time responses Discrete-time digital systems Continuous-time PID controllers Discrete-time PID controllers ON-OFF temperature control with Raspberry Pi and Arduino Uno PID-based temperature control with Raspberry Pi and Arduino Uno PID-based DC motor control with Raspberry Pi and Arduino Uno PID-based water level control with Raspberry Pi and Arduino Uno PID-based LED-LDR brightness control with Raspberry Pi and Arduino Uno
€ 32,95
Leden: € 29,66
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Elektor Digital Elektor Special: Introduction to Electronics with Arduino (PDF)
Although the Arduino isn’t a novelty any longer, there are still many beginners who want to try programming and development with a microcontroller, and to them, it is all new. All beginnings can be difficult, though they should be light and enjoyable. You do not need much or expensive equipment for the examples. The circuits are built on a small breadboard, and, if necessary, connected to an Arduino Uno, which you can program on a Windows PC. You will find clear examples of how to build all circuits, ensuring easy and error-free reproduction. Projects Discussed Current & Voltage – How it all began Arduino Hardware Arduino Programming The Electrical Circuit Measuring with the Multimeter Circuit Diagrams and Breadboards Creating Circuit Diagrams Breadboard Views with Fritzing Online Circuit Simulation Indispensable: Resistors (Part 1) Hands-on with Resistors (Part 2) Variable Resistors Diodes: One-way Street for Current The Transistor Switch Electromagnetism Relays and Motors op-amps: Operational Amplifiers Capacitors The NE555 Timer PWM and Analogue Values with Arduino 7-Segment Temperature Display Introduction to Soldering and LCDs
€ 11,95
Leden: € 10,76
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Elektor Publishing Arduino for STM32
Learning Embedded Systems with STM32 Nucleo Boards Embedded programming has become more accessible than ever before. Development boards are inexpensive, software tools are easy to install, and the Arduino IDE provides a familiar environment for creating embedded applications. Combined with the STM32 Nucleo family of development boards, it offers an excellent platform for learning how modern microcontrollers interact with the physical world. This book introduces embedded programming using the Arduino environment on STM32 Nucleo boards. You will learn how a microcontroller continuously reads inputs, processes information, and controls outputs in a predictable real-time loop. Through practical examples, you will discover how to control LEDs, read switches and sensors, generate PWM signals, drive motors, and exchange data with other devices, all while becoming familiar with the capabilities of STM32 microcontrollers. Although the STM32 family includes devices with different performance levels, memory sizes, and peripheral sets, they all share the same architectural concepts. Digital and analog I/O, timers, interrupts, PWM, communication interfaces, and low-power operation are fundamental features found throughout the STM32 ecosystem. Understanding these building blocks will enable you to work confidently with a wide range of STM32 devices, from entry-level microcontrollers to more advanced applications. By focusing on practical programming techniques rather than hardware complexity, this book develops skills that remain useful well beyond the examples presented. Whether you are taking your first steps in embedded systems or expanding your experience with STM32 microcontrollers, you will gain a solid understanding of both the Arduino development environment and the principles that underpin embedded software design.
€ 27,95
Leden: € 25,16
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Elektor Digital The ESP32 Cheap Yellow Display Book (PDF)
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.
€ 29,95
Leden: € 26,96
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Elektor Digital Ultimate Arduino Uno Hardware Manual (E-book)
A Reference and User Guide for the Arduino Uno Hardware and Firmware A manual providing up-to-date hardware information for the popular Arduino Uno, the easy to use open-source electronics platform used by hobbyists, makers, hackers, experimenters, educators and professionals. Get all the information that you need on the hardware and firmware found on Arduino Uno boards in this handy reference and user guide. ldeal for the workbench or desktop Contains all of the Arduino Uno hardware information in one place Covers Arduino / Genuino Uno revision 3 and earlier boards Easily find hardware technical specifications with explanations Pin reference chapter with interfacing examples Diagrams and illustrations for easy reference to alternate pin functions and hardware connections Learn to back up and restore firmware on the board, or load new firmware Basic fault finding and repair procedures for Arduino Uno boards Power supply circuits simplified and explained Mechanical dimensions split into five easy to reference diagrams Contains circuit diagrams, parts list and board layout reference to easily locate components
€ 29,95
Leden: € 26,96
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Elektor Digital Arduino & Co – Measure, Control, and Hack (E-book)
Clever Tricks with ATmega328 Pro Mini Boards With a simple Pro Mini board and a few other components, projects that 20 or 30 years ago were unthinkable (or would have cost a small fortune) are realized easily and affordably in this book: From simple LED effects to a full battery charging and testing station that will put a rechargeable through its paces, there’s something for everyone. All the projects are based on the ATmega328 microcontroller, which offers endless measuring, switching, and control options with its 20 input and output lines. For example, with a 7-segment display and a few resistors, you can build a voltmeter or an NTC-based thermometer. The Arduino platform offers the perfect development environment for programming this range of boards. Besides these very practical projects, the book also provides the necessary knowledge for you to create projects based on your own ideas. How to measure, and what? Which transistor is suitable for switching a certain load? When is it better to use an IC? How do you switch mains voltage? Even LilyPad-based battery-operated projects are discussed in detail, as well as many different motors, from simple DC motors to stepper motors. Sensors are another exciting topic: For example, a simple infrared receiver that can give disused remote controls a new lease on life controlling your home, and a tiny component that can actually measure the difference in air pressure between floor and table height!
€ 32,95
Leden: € 29,66