Chapter 1, page 11 This code is basic but allows the reader to gain insight into key elements for several other projects in this book. It combines two pieces of code that are listed in the examples ...

Back in 1991, I was in New Delhi visiting the iconic Lotus Temple (Bahá’íHouse of Worship). The temple’s breathtaking ...

Download library ZIP file, and extract it. Place the extracted library folder in Documents(文件)/Arduino/libraries/. Restart the Arduino IDE. (Optional) Go to ...

Download Arduino IDE and install it. Open the IDE and find the File -> Perference. Please Use ESP32 Addritional boards manager URLs. sprintf(headerJSON, "{\"alg ...