In ESP32 programmeren voor beginners bekijken we de ESP32 en zijn voorganger, de ESP8266. Deze kleine, maar zeer krachtige Chinese chips bestaan uit een processor, geheugen, input- en outputaansluitingen en hebben draadloze netwerktoegang via WiFi.
Met dit boek tonen we hoe de programmeeromgeving Arduino werkt en hoe die kan gebruikt worden met ESP-hardware. Aan de hand van voorbeelden en projecten verduidelijken we hoe de ESP-hardware kan worden toegepast.
In vogelvlucht:
We beschrijven de opbouw van ESP-experimenten.
We tonen hoe displays worden aangesloten.
Eeprom_24c16 demonstreert hoe een externe geheugenchip wordt gebruikt om getallen en tekst op te slaan en weer uit te lezen.
Project Klok is de eenvoudige implementatie van een digitale klok.
We geven een handleiding voor het gebruik van temperatuur- en luchtvochtigheidsensoren.
Webclient laat zien hoe de ESP32 gegevens van het internet kan halen.
Met Webserver kunnen we op afstand met een pc of smartphone gegevens halen uit een ESP32, sensoren uitlezen en toestellen aan- en uitschakelen.
Een NTP-klok haalt tijdinformatie van Tijdserver. Die geeft zowel de tijd als het aantal seconden sinds 1 januari 1900. Het boek beschrijft hoe hieruit de tijd kan worden berekend.
In het laatste hoofdstuk gebruiken we het internet om nauwkeurige weerinformatie en voorspellingen op te vragen.
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.
Complete ESP32 microcontroller learning course featuring a custom-designed MCU expansion board, hands-on projects, and a comprehensive online guide – perfect for learning hardware, programming, and connectivity step by step.
A Practical Introduction to Embedded Systems with the ESP32
This course is designed for readers who are new to embedded systems and looking for a structured, example-driven way to get started. If you’ve explored general-purpose electronics or Arduino-based materials but found them too broad or lacking in practical guidance, this course offers a more focused alternative.
Using the "ESP32 by Example Kit" (EEK) – a compact and affordable set of components featuring LEDs, sensors, an OLED display, and a motion processor – you’ll work with a consistent hardware setup throughout the course. Once assembled, the EEK stays mostly unchanged, allowing you to concentrate on learning and experimentation without constant reconfiguration.
Topics include:
Understanding and programming the ESP32 microcontroller
Writing and deploying code with the Arduino IDE
Exploring cyber-physical systems, culminating in basic drone control
No prior experience with Arduino or embedded development is required. Each section features hands-on examples and mini-projects designed to reinforce key concepts and inspire deeper exploration. By the end of the course, you’ll be able not only to reproduce the book’s examples but also to build on them with your own ideas and applications.
Whether you're interested in embedded programming, interactive systems, or introductory drone control, this course provides a clear and practical path to getting started.
What you'll learn?
Embedded programming with the ESP32 using the Arduino IDE
Real-time sensor input and control via buttons, LEDs, and displays
Gesture-based interaction using the MPU6050 motion sensor
Bluetooth gamepad integration and drone control simulation
Wi-Fi and UDP networking, local web servers, and NTP
MQTT communication with cloud platforms like AWS and Arduino IoT
How to build and deploy full-featured IoT systems
Perfect for
Students and self-learners exploring embedded systems
Makers and IoT enthusiasts looking to improve their hardware skills
Educators and trainers seeking ready-to-teach material
Developers moving beyond Raspberry Pi or Arduino basics
Support when you need it
Access to instructors via Elektor Academy
Helpful community forums and essential documentation
What's inside the Box (Course)?
New 384-page book: "ESP32 by Example" (valued at €45)
Elektor ESP32 by Example Kit (EEK): Microcontroller Extension Board with 6 LEDs and 6 Buttons installed + OLED Display, MPU6050 3-axis Accelerometer and Gyroscope Module (valued at €40)
Adafruit HUZZAH32 – ESP32 Feather MCU Board (valued at €30)
ESP32 Cheap Yellow Display Board (valued at €25)
DHT11 Humidity & Temperature Sensor
Breadboard
Jumper wires
USB-C cable
Access to the full course on the Elektor Academy Pro Learning Platform
Instructional videos
Downloadable Arduino project files for every module
Learning Material (of this Box/Course)
▶ Click here to open
Module 1 – Getting Started with the ESP32 & EEK
Module 2 – Digital Output – LEDs and GPIO
Module 3 – Switches and Input Handling
Module 4 – EEK and PWM
Module 5 – OLED and Display Output
Module 6 – Motion Sensing with the MPU6050
Module 7 – Capstone Project (EEK in Action)
Module 8 – WiFi and Web Control with ESP32
Module 9 – Cloud Concepts using EEK
Module 10 – Hands-on: Arduino IoT Cloud and EEK
Module 11 – BlueTooth and EEK GamePad Integration
Module 12 – Why Drones?
Module 13 – Drone Simulator Concepts
Module 14 – Simple Drone Flight Control
Module 15 – Real-Time Drone Flight Control
Module 16 – Drone Control Mini-Projects
Module 17 – Middleware and Python Scripting
Module 18 – Python Applications for Drone Control
Module 19 – Capstone EEK Control Project and Presentation
About the Author
Dr. Jim Solderitsch is an educator, software architect, systems developer, and cybersecurity researcher with a focus on cyber-physical systems. He currently serves as an Adjunct Professor in Computing Sciences at Villanova University in Pennsylvania.
What is Elektor Academy Pro?
Elektor Academy Pro delivers specialized learning solutions designed for professionals, engineering teams, and technical experts in the electronics and embedded systems industry. It enables individuals and organizations to expand their practical knowledge, enhance their skills, and stay ahead of the curve through high-quality resources and hands-on training tools.
From real-world projects and expert-led courses to in-depth technical insights, Elektor empowers engineers to tackle today’s electronics and embedded systems challenges. Our educational offerings include Academy Books, Pro Boxes, Webinars, Conferences, and industry-focused B2B magazines – all created with professional development in mind.
Whether you're an engineer, R&D specialist, or technical decision-maker, Elektor Academy Pro bridges the gap between theory and practice, helping you master emerging technologies and drive innovation within your organization.
Diese Ausgabe steht allen GOLD- und GREEN-Mitgliedern auf der ElektorMagazine-Website zum Download bereit!
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Der ESP-BLASTEine Mini-Raketendrohne mit ESP32, die über 100 km/h erreicht
Wireless Workshop (1)Freigeschaltetes Funkmodul: 433-MHz-CC1101-Sub-GHz-Transceiver
AM-Sendermit Rechteck-/Sinuswellengenerator auf Raspberry Pi Pico
STM32Cube Innovations ChallengeTreten Sie mit Ihrem besten STM32C5-Design an
CoffeeCallerWie ein langer Flur zu einer maßgefertigten Mesh-Netzwerk-Platine führte
AudiotronicsKlirrfaktor
Elektor ist 65Projekte aus früheren September/Oktober-Ausgaben
Geräteortung durch Bluetooth Channel SoundingZentimetergenaue Entfernungsmessung im IoT der nächsten Generation
2026: Eine KI-OdysseeQuantencomputing ist nicht die nächste GPU
Cloud-Schutz durch Edge-Sicherheit
Erste Erfahrungen mit dem HackRF ProPraktische Tests mit der neuen SDR-Hardware
Herausforderung ElektromobilitätEffiziente Lötlösungen für moderne Fahrzeugtechnik
Modem-Update von GPRS/2G auf LTE/4Gam Beispiel einer Funk-Alarmzentrale
Loop-Antenne mit RF BricksTeil 1: Kurzwellen-Antenne mit einstellbarer Richtwirkung im Selbstbau
Internetradio-zu-AM-KonverterVerwendung eines ESP32-S3 als Sender
Projekt 2.0
mioty – ein ÜberblickLPWAN à la Fraunhofer
Werkbank-WeisheitPraktische Tipps von Experten
Walter, das kompakte IoT-ModulTeil 2: Zugriff auf Wetter- und Datendienste
Easy and Affordable Digital Signal ProcessingThe aim of this book is to teach the basic principles of Digital Signal Processing (DSP) and to introduce it from a practical point of view using the bare minimum of mathematics. Only the basic level of discrete-time systems theory is given, sufficient to implement DSP applications in real time. The practical implementations are described in real time using the highly popular ESP32 DevKitC microcontroller development board. With the low cost and extremely popular ESP32 microcontroller, you should be able to design elementary DSP projects with sampling frequencies within the audio range. All programming is done using the popular Arduino IDE in conjunction with the C language compiler.After laying a solid foundation of DSP theory and pertinent discussions on the main DSP software tools on the market, the book presents the following audio-based sound and DSP projects:
Using an I²S-based digital microphone to capture audio sound
Using an I²S-based class-D audio amplifier and speaker
Playing MP3 music stored on an SD card through an I²S-based amplifier and speaker
Playing MP3 music files stored in ESP32 flash memory through an I²S-based amplifier and speaker
Mono and stereo Internet radio with I²S-based amplifiers and speakers
Text-to-speech output with an I²S-based amplifier and speaker
Using the volume control in I²S-based amplifier and speaker systems
A speaking event counter with an I²S-based amplifier and speaker
An adjustable sinewave generator with I²S-based amplifier and speaker
Using the Pmod I²S2 24-bit fast ADC/DAC module
Digital low-pass and band-pass real-time FIR filter design with external and internal A/D and D/A conversion
Digital low-pass and band-pass real-time IIR filter design with external and internal A/D and D/A conversion
Fast Fourier Transforms (FFT)
Practical Multitasking Fundamentals
Programming embedded systems is difficult because of resource constraints and limited debugging facilities. Why develop your own Real-Time Operating System (RTOS) as well as your application when the proven FreeRTOS software is freely available? Why not start with a validated foundation?
Every software developer knows that you must divide a difficult problem into smaller ones to conquer it. Using separate preemptive tasks and FreeRTOS communication mechanisms, a clean separation of functions is achieved within the entire application. This results in safe and maintainable designs.
Practicing engineers and students alike can use this book and the ESP32 Arduino environment to wade into FreeRTOS concepts at a comfortable pace. The well-organized text enables you to master each concept before starting the next chapter. Practical breadboard experiments and schematics are included to bring the lessons home. Experience is the best teacher.
Each chapter includes exercises to test your knowledge. The coverage of the FreeRTOS Application Programming Interface (API) is complete for the ESP32 Arduino environment. You can apply what you learn to other FreeRTOS environments, including Espressif’s ESP-IDF. The source code is available from GitHub. All of these resources put you in the driver’s seat when it is time to develop your next uber-cool ESP32 project.
What you will learn:
How preemptive scheduling works within FreeRTOS
The Arduino startup “loopTask”
Message queues
FreeRTOS timers and the IDLE task
The semaphore, mutex, and their differences
The mailbox and its application
Real-time task priorities and its effect
Interrupt interaction and use with FreeRTOS
Queue sets
Notifying tasks with events
Event groups
Critical sections
Task local storage
The gatekeeper task
Open-Source-Code mit Arduino IDE und PlatformIO
Autonomes Fahren: GPS, Accelerometer, Gyroskop
PS3-Controller
Mikrocontroller wie der Arduino und Einplatinenrechner wie der Raspberry Pi haben sich zu beliebten Komponenten entwickelt. Dritter im Bunde ist der ESP32 der Firma Espressif. Mikrocontroller dieser Baureihe zeichnen sich durch eine Vielzahl implementierter Funktionen aus, die bei einem Arduino konventioneller Prägung mit einem Atmel-AVR-Mikrocontroller erst mit weiterer Hardware möglich sind. Prominentes Beispiel sind hier die WiFi- und Bluetooth-Funktionalitäten. Gegenüber einem Raspberry Pi zeichnen sie sich durch einen deutlich geringeren Preis aus.
Allgemeine Informationen für die Realisierung eines Roboterauto-Projekts mit dem ESP32 sind leicht zu finden. Dabei handelt es sich aber oft nur um Ausführungen zu einem Teilaspekt, ohne inhaltliche oder funktionale Abstimmung. So ist nicht nur die Beschaffung der benötigten Informationen mühselig und zeitaufwändig, sie kann auch außerordentlich fehlerträchtig sein.
Ansatzpunkt dieses Buches ist, diese Lücke zu schließen. Es geht auf verschiedene Möglichkeiten eines Chassis ein, vermittelt nötige Kenntnisse und führt schrittweise von einer einfachen Motorsteuerung zu einem komplexen sensor- und sprachgesteuerten Roboterauto. Hacks rund um GPS und eine PlayStation 3 runden die Sache ab.
Inhalt
Bei der Reihenfolge der Kapitel wurde versucht – beginnend bei der Darstellung von grundlegenden Informationen – über die Lösung einfacher Aufgaben zu etwas anspruchsvolleren Techniken zu führen.
Der Mikrocontroller ESP32
Die Software erstellen
Die Stromversorgung
Rund um die Hardware
Das Chassis
Der Gleichstrommotor
Kabellose Steuerung über WiFi
Mit Sensoren Hindernisse erkennen
Eine eigene Roboterauto-App
Servo und Lichtsensor
GPS
Accelerometer / Gyroskop
PS3-Controller
Roboterauto-App
Hinweis zur Software
Die Dateien haben das Suffix (.cpp). Grund ist die Entwicklung mit PlatformIO. Mit Copy & Paste sollten sie auch in der Arduino-IDE verwendet werden können.
This bundle gives you everything you need to get started right away with the XIAO ESP32-C3 development board. Learn the fundamentals of the ESP32-C3 and build practical projects with Wi-Fi, Bluetooth, sensors, displays, PWM, Deep Sleep, and much more.
Book: Build Smart Projects with the XIAO ESP32-C3 Board
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
Seeed Studio XIAO ESP32C3
Seeed Studio XIAO ESP32C3 has equipped a highly-integrated ESP32-C3 chip, built around a 32-bit RISC-V chip processor with a four-stage pipeline that operates at up to 160 MHz.
The board equips highly-integrated ESP32-C3 SoC. The chip has been installed with a complete 2.4 GHz Wi-Fi subsystem which means it supports Station mode, SoftAP mode, SoftAP & Station mode, and promiscuous mode for multiple Wi-Fi applications. It works under an ultra-low power state, also supporting features of Bluetooth 5 and Bluetooth mesh. There are 400 KB SRAM & 4 MB Flash on the chip, allowing for more programming space, and bringing more possibilities to the IoT control scenarios.
Applications
Internet of Things
Wearable devices
Health monitoring
Education
Low-Power networking
Rapid prototyping
Specifications
Processor
ESP32-C3 SoC
RISC-V single-core 32-bit chip processor with a four-stage pipeline that operates at up to 160 MHz
Wireless
Complete 2.4GHz Wi-Fi subsystem
Bluetooth Low Energy 5.0/ Bluetooth Mesh
On-chip Memory
400 KB SRAM & 4 MB Flash
Interface
1x UART, 1x I²C, 1x SPI, 11x GPIO (PWM), 4x ADC
1x Reset button, 1x Boot button
Power (Typ.)
Max 3.3 V Output Current: 500 mA Test Condition: BAT Pin Input @ 3.8 V Source Capability: 3 A
Charging current: 380 mA(Fast) / 40 mA(Trickle)
Input voltage (VIN): 5 VInput voltage (BAT): 3.7 V
Deep Sleep Power Consumption
Deep Sleep Mode: 44 μA
Wi-Fi Enabled Power Consumption
Active Mode: 75 mA
Modem-sleep Mode: 25 mA
Light-sleep Mode: 4 mA
BLE Enabled Power Consumption
Modem-sleep Mode: 27 mA
Light-sleep Mode: 10 mA
Dimensions
21 x 17.8 mm
Included
1x Seeed Studio XIAO ESP32C3
1x Antenna
2x 7-pin header
Downloads
Wiki
Datasheet
This bundle contains:
Book: Build Smart Projects with the XIAO ESP32-C3 Board (normal price: €35)
Board: Seeed Studio XIAO ESP32C3 (normal price: €10)
Practical Multitasking Fundamentals
Programming embedded systems is difficult because of resource constraints and limited debugging facilities. Why develop your own Real-Time Operating System (RTOS) as well as your application when the proven FreeRTOS software is freely available? Why not start with a validated foundation?
Every software developer knows that you must divide a difficult problem into smaller ones to conquer it. Using separate preemptive tasks and FreeRTOS communication mechanisms, a clean separation of functions is achieved within the entire application. This results in safe and maintainable designs.
Practicing engineers and students alike can use this book and the ESP32 Arduino environment to wade into FreeRTOS concepts at a comfortable pace. The well-organized text enables you to master each concept before starting the next chapter. Practical breadboard experiments and schematics are included to bring the lessons home. Experience is the best teacher.
Each chapter includes exercises to test your knowledge. The coverage of the FreeRTOS Application Programming Interface (API) is complete for the ESP32 Arduino environment. You can apply what you learn to other FreeRTOS environments, including Espressif’s ESP-IDF. The source code is available from GitHub. All of these resources put you in the driver’s seat when it is time to develop your next uber-cool ESP32 project.
What you will learn:
How preemptive scheduling works within FreeRTOS
The Arduino startup “loopTask”
Message queues
FreeRTOS timers and the IDLE task
The semaphore, mutex, and their differences
The mailbox and its application
Real-time task priorities and its effect
Interrupt interaction and use with FreeRTOS
Queue sets
Notifying tasks with events
Event groups
Critical sections
Task local storage
The gatekeeper task
This complete ESP32 microcontroller programming course features a textbook, a component kit, hands-on projects, and a comprehensive online course with simulations. It is ideal for step-by-step learning of embedded systems programming with Arduino using a practical, hands-on approach.
A Practical Introduction to Embedded Systems with the ESP32
This course is designed for people who are new to embedded systems and looking for a structured, example-driven way to get started.
A kit of parts comprising LEDs and resistors, switches, sensors and actuators, displays, a breadboard and wires, and more is included. These are used in the course to illustrate example applications.
No prior experience with Arduino or embedded development is required. Each section features hands-on examples and mini projects designed to reinforce key concepts and inspire deeper exploration. By the end of the course, you’ll be able not only to reproduce the examples but also to build on them with your own ideas and applications.
What Will You Learn?
Microcontroller programming with the ESP32 using the Arduino IDE
Working with Digital I/O, read buttons and encoders, control LEDs and relays
Read analog inputs, voltages, and analog sensors
Generating analog output signals and PWM
Use serial communication like UART, I²C and SPI to control displays and read digital sensors and SD cards
Managing time
Working with interrupts
Real-time sensor input and control via buttons, LEDs, and displays
Control actuators like relays and servo motors
Who Is It For?
Students and self-learners exploring embedded systems
Makers and IoT enthusiasts looking to improve their hardware skills
Educators and trainers seeking ready-to-teach material
What's Inside the Box?
Access to the full course on the Elektor Academy Pro Learning Platform
ESP32 microcontroller board + USB cable
Book: Programming Microcontrollers in C/C++ Using Arduino
Downloadable project files for every module
Component Box:
2× LED, red, 5 mm
LED, green, 5 mm
3× Resistor, 470 Ω, 0.25 W
LDR
Potentiometer, 10 kΩ, linear
Pushbutton
Rotary encoder module
Relay module
DHT22 Humidity & Temperature Sensor
TM1637-compatible 4-digit 7-segment display
MPU-6050 IMU with headers
SSD1306-compatible I²C OLED display
Micro SD card adapter with header
Buzzer
SG90 Micro Servo
ILI9341-compatible SPI 240×320 TFT display
20× Jumper wires
Breadboard
All Programming Courses (and differences in content)
Course
Arduino
Raspberry Pi Pico with Arduino C/C++
ESP32 with Arduino C/C++
Raspberry Pi Pico with MicroPython
ESP32 with MicroPython
Online Course
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
Book
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-piece Component Box
40-piece Component Box
40-piece Component Box
40-piece Component Box
40-piece Component Box
L'ESP8266 d'Espressif est une puce Wi-Fi dotée d'une pile TCP/IP complète et d'une capacité de microcontrôleur. Il a fait des vagues dans la communauté des fabricants grâce à son prix bas.
Mais de nombreux développeurs étaient mécontents de la consommation électrique élevée de l'ESP8266. L'ESP32, équipé d'un coprocesseur ULP (Ultra Low Power), propose un remède à cela.
Cet e-book présente un certain nombre de projets mettant en vedette ESP32 et ESP8266 et démontre leurs performances dans différentes applications.
Des articles
Journal lumineux défiant512 pilotes LED pour Wi-Fi dotés d'un ESP-12F
Regarder avec VFD et ESP32À la précision d'Internet
L'ESP32 est idéal pour la consommationProgrammation du coprocesseur ULP
Adaptateur de programmation USB pour ESP8266Dans la famille Espressif, je voudrais l'ESP-01 et l'ESP-012
Émulateur DCF77 à ESP8266Des ondes radio à l'internet
Thermostat sur le bureau WiFiSurveillance de la température flexible et programmable
Minutes pour le thermostat du bureau WiFiSept canaux de temporisation d'une précision atomique
Coûteau suisse pour microcontrôleursPlatformIO, un outil de programmation universel
Station Météo NucleoInformations mises à jour sur l'affichage sur l'écran LCD
AllerNotifierUne interface flexible pour les captureurs d'IdO
Regarder RGBChiffreAffiche avec 7 segments et couleur
ESP32 pour les utilitaires exigeantsProgrammation avec les outils d'origine
Mutation de l'ESP8266Découvrons l'ESP32 avec l'EDI d'Arduino
MicroPythonLe Python des petits systèmes
MicroPython et PyBoardLa LED qui clignote…Au serveur web qui fait clignoter une LED
Machine de surveillance pour ESP8266Domotique pour la transition énergétique
WLAN compact et autonomeOu comment utiliser la puce ESP8266 sans µC
ESP8266 sur la carte d'entrées/sorties AndroidLancez-vous dans la mise à jour du micrologiciel
WLAN pour microcontrôleursAvec la puce ESP8266
Carte de commande Wi-Fi : le retourRelies des objets à votre ordiphone
Open-Source-Code mit Arduino IDE und PlatformIO
Autonomes Fahren: GPS, Accelerometer, Gyroskop
PS3-Controller
Mikrocontroller wie der Arduino und Einplatinenrechner wie der Raspberry Pi haben sich zu beliebten Komponenten entwickelt. Dritter im Bunde ist der ESP32 der Firma Espressif. Mikrocontroller dieser Baureihe zeichnen sich durch eine Vielzahl implementierter Funktionen aus, die bei einem Arduino konventioneller Prägung mit einem Atmel-AVR-Mikrocontroller erst mit weiterer Hardware möglich sind. Prominentes Beispiel sind hier die WiFi- und Bluetooth-Funktionalitäten. Gegenüber einem Raspberry Pi zeichnen sie sich durch einen deutlich geringeren Preis aus.
Allgemeine Informationen für die Realisierung eines Roboterauto-Projekts mit dem ESP32 sind leicht zu finden. Dabei handelt es sich aber oft nur um Ausführungen zu einem Teilaspekt, ohne inhaltliche oder funktionale Abstimmung. So ist nicht nur die Beschaffung der benötigten Informationen mühselig und zeitaufwändig, sie kann auch außerordentlich fehlerträchtig sein.
Ansatzpunkt dieses Buches ist, diese Lücke zu schließen. Es geht auf verschiedene Möglichkeiten eines Chassis ein, vermittelt nötige Kenntnisse und führt schrittweise von einer einfachen Motorsteuerung zu einem komplexen sensor- und sprachgesteuerten Roboterauto. Hacks rund um GPS und eine PlayStation 3 runden die Sache ab.
Inhalt
Bei der Reihenfolge der Kapitel wurde versucht – beginnend bei der Darstellung von grundlegenden Informationen – über die Lösung einfacher Aufgaben zu etwas anspruchsvolleren Techniken zu führen.
Der Mikrocontroller ESP32
Die Software erstellen
Die Stromversorgung
Rund um die Hardware
Das Chassis
Der Gleichstrommotor
Kabellose Steuerung über WiFi
Mit Sensoren Hindernisse erkennen
Eine eigene Roboterauto-App
Servo und Lichtsensor
GPS
Accelerometer / Gyroskop
PS3-Controller
Roboterauto-App
Hinweis zur Software
Die Dateien haben das Suffix (.cpp). Grund ist die Entwicklung mit PlatformIO. Mit Copy & Paste sollten sie auch in der Arduino-IDE verwendet werden können.
