Connecting ESP8266 to WiFi

📶 Connecting ESP8266 to WiFi

📡 What You'll Learn:

🔌 Connect ESP8266 to WiFi network
📊 Check connection status and get IP address
⚠️ Handle connection timeouts and errors

📖 Basic WiFi Connection Code

#include <ESP8266WiFi.h>

const char* ssid = "YOUR_WIFI_NAME";
const char* password = "YOUR_WIFI_PASSWORD";

void setup() {
    Serial.begin(115200);
    delay(10);
    
    Serial.println("\n📡 Connecting to WiFi...");
    WiFi.begin(ssid, password);
    
    // Wait up to 10 seconds for connection
    int attempts = 0;
    while (WiFi.status() != WL_CONNECTED && attempts < 20) {
        delay(500);
        Serial.print(".");
        attempts++;
    }
    
    Serial.println();
    
    if (WiFi.status() == WL_CONNECTED) {
        Serial.println("✅ WiFi connected!");
        Serial.print("📡 IP address: ");
        Serial.println(WiFi.localIP());
    } else {
        Serial.println("❌ WiFi connection failed!");
        Serial.println("   Check SSID, password, and signal strength");
    }
}

void loop() {
    // Your sensor reading and data sending code here
    delay(60000);
}

💡 Important Notes:

ESP8266 only supports 2.4GHz WiFi networks (not 5GHz)
Rural farm WiFi is typically 2.4GHz - you're good!
For battery operation, connect, send data, then disconnect to save power
Use WiFi.setSleep(true) to reduce power consumption

⚠️ Common Issues:

Connection timeout: Weak signal - move closer to router
Wrong password: Check case-sensitive characters
5GHz network: ESP8266 doesn't support it - use 2.4GHz
SSID hidden: Must use WiFi.begin(ssid, password, channel, bssid)

🎉 Quick Reference:

WiFi.begin(ssid, password) → Start connection
WiFi.status() == WL_CONNECTED → Check if connected
WiFi.localIP() → Get IP address
WiFi.setSleep(true) → Enable power saving

💡 Key Takeaways:

Apply these concepts directly to your farm or project.
Take notes on important details for the quiz.
Use the button below to track your progress.

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