earth quake notification from -> https://www.facebook.com/watch?v=1331186067935189

main.ino

#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
// กรอก Wi-Fi
const char* ssid = "YOUR_WIFI_SSID";
const char* password = "********";
// พิกัดประเทศไทยโดยประมาณ
const float TH_LAT = 15.0;
const float TH_LON = 101.0;
const float MAX_DISTANCE_KM = 1000.0; // รัศมี 1000 กม.
void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password);
Serial.print("Connecting to WiFi");
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("\nConnected!");
fetchEarthquakeData();
}
void loop() {
delay(10000); // เช็กทุก 1 นาที
fetchEarthquakeData();
}
void fetchEarthquakeData() {
if ((WiFi.status() == WL_CONNECTED)) {
HTTPClient http;
String url = "https://earthquake.usgs.gov/.../v1.0/summary/4.5_day.geojson";
http.begin(url);
int httpCode = http.GET();
if (httpCode > 0) {
String payload = http.getString();
//Serial.println(payload);//
const size_t capacity = 50 * 1024;
DynamicJsonDocument doc(capacity);
DeserializationError error = deserializeJson(doc, payload);
if (!error) {
JsonArray features = doc["features"].as<JsonArray>();
for (JsonObject quake : features) {
float magnitude = quake["properties"]["mag"];
const char* place = quake["properties"]["place"];
long time = quake["properties"]["time"];
float lat = quake["geometry"]["coordinates"][1];
float lon = quake["geometry"]["coordinates"][0];
float dist = haversine(lat, lon, TH_LAT, TH_LON);
if (dist <= MAX_DISTANCE_KM) {
Serial.println("📍 แผ่นดินไหวใกล้ประเทศไทย:");
Serial.printf(" - สถานที่: %s\n", place);
Serial.printf(" - ขนาด: %.1f\n", magnitude);
Serial.printf(" - พิกัด: %.2f, %.2f (%.1f km)\n", lat, lon, dist);
Serial.println("----------------------------------");
}
}
} else {
Serial.println("❌ JSON Parse Error!");
}
} else {
Serial.printf("❌ HTTP Request failed, code: %d\n", httpCode);
}
http.end();
}
}
// คำนวณระยะห่างระหว่างจุด 2 จุด บนโลก
float haversine(float lat1, float lon1, float lat2, float lon2) {
const float R = 6371.0; // รัศมีโลก (กม.)
float dLat = radians(lat2 - lat1);
float dLon = radians(lon2 - lon1);
float a = sin(dLat/2) * sin(dLat/2) +
cos(radians(lat1)) * cos(radians(lat2)) *
sin(dLon/2) * sin(dLon/2);
float c = 2 * atan2(sqrt(a), sqrt(1-a));
return R * c;
}