Most reputable "hands-on" ESP32 materials are released under or MIT licenses (especially those from Random Nerd Tutorials, Espressif, or DroneBot Workshop). These authors often provide the PDF for free as a "Thank You" to the community or as a sample for a paid print book.
void handleRoot() { float h = dht.readHumidity(); float t = dht.readTemperature(); String html = "<!DOCTYPE html><html><head><meta http-equiv='refresh' content='5'></head><body>"; html += "<h1>ESP32 Weather Station</h1>"; html += "<p>Humidity: " + String(h) + " %</p>"; html += "<p>Temperature: " + String(t) + " °C</p>"; html += "</body></html>"; server.send(200, "text/html", html); }
The Internet of Things (IoT) revolution is here, and at its heart lies a powerful, low-cost microcontroller: the ESP32 . Whether you are a hobbyist, an engineering student, or a professional developer, the ESP32 has become the gold standard for Wi-Fi and Bluetooth-enabled projects.
// Hands-On ESP32 Basic Wi-Fi Scanner #include <WiFi.h> void setup() { Serial.begin(115200); WiFi.mode(WIFI_STA); WiFi.disconnect(); delay(100); Serial.println("ESP32 Wi-Fi Scanner Ready"); }
void setup() { Serial.begin(115200); dht.begin(); WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println("\nIP address: " + WiFi.localIP().toString()); server.on("/", handleRoot); server.begin(); }
