Practical IoT using Arduino and ESP32

<p>This handy book will get you up and running with Arduino and ESP32 in no time teaching you how to think design and build real-world IoT applications. You'll start by exploring the Uno and ESP32 boards identifying pins and powering sensors and LEDs. Then you get the Arduino IDE up and running handle libraries and flags and learn how to write upload and debug sketches.</p><p></p><p>You'll be working on building some key C++ skills like handling data types loops functions and classes and you'll be doing all of this without getting stuck. Then you move on to sensors where you're reading digital and analog signals calibrating measurements scaling values and filtering noise. You'll be driving I2C and SPI displays for clear visual feedback. Next we'll dive into camera modules where you'll learn how to wire an OV7670 or ESP32-CAM capture and compress images save them to SPIFFS or SD and run basic image analysis. There are wireless chapters that teach Wi-Fi HTTPS with JSON MQTT messaging Bluetooth LE vs Classic and token-based security.</p><p></p><p>Later on you'll find chapters about Cloud and low-power stuff like JSON building AWS IoT Core connections live dashboards with WebSockets and Node-RED Google Sheets logging and deep sleep with batched updates. And the final projects really tie it all together: a temperature monitor that notifies the cloud an OLED QR-code generator an ethical Wi-Fi jamming demo and an RTC alarm clock with mobile notifications. All of our projects combine wiring code networking and power management so you'll gain real-world IoT skills without claiming total mastery.</p><p></p><h2>Key Learnings</h2><ul><li>Use Uno and ESP32 pins for sensors power and communication.</li><li>Set up Arduino IDE boards libraries and compile flags effectively.</li><li>Use C++ to create efficient programs with loops functions and classes. Also use non-blocking timing.</li><li>Read calibrate and filter the sensor data to get accurate measurements.</li><li>Get clear visual feedback by driving I2C/SPI displays with Adafruit GFX.</li><li>Capture and process images using OV7670 or ESP32-CAM modules.</li><li>Enable Wi-Fi HTTPS MQTT and Bluetooth for secure IoT communication.</li><li>Combine AWS IoT and Node-RED to create real-time data dashboards.</li><li>Log to Google Sheets and extend your battery life with deep sleep.</li><li>Build projects like cloud alerts QR codes Wi-Fi jamming and RTC alarms.</li></ul><p></p><h2>Table of Content</h2><p>UNO & ESP32 Overview</p><p>Arduino IDE & Toolchain</p><p>C++ Fundamentals for Sketches</p><p>Digital & Analog Sensors</p><p>Displays & User Interfaces</p><p>Camera & Image Handling</p><p>WiFi & Bluetooth Networking</p><p>IoT Protocols & Cloud</p><p>Smart IoT Projects</p>