GeoLinker GPS Visualizer

1#include <WiFi.h>
2#include <HTTPClient.h>
3#include <TinyGPS++.h>
4#include <HardwareSerial.h>
5
6const char* ssid     = "YOUR_WIFI_SSID";
7const char* password = "YOUR_WIFI_PASSWORD";
8const char* apiKey   = "YOUR_API_KEY";
9const char* device   = "esp32_tracker";
10
11TinyGPSPlus gps;
12HardwareSerial SerialGPS(1);
13
14void setup() {
15  Serial.begin(115200);
16  SerialGPS.begin(9600, SERIAL_8N1, 16, 17);
17  WiFi.begin(ssid, password);
18  while (WiFi.status() != WL_CONNECTED) delay(500);
19  Serial.println("WiFi connected!");
20}
21
22void loop() {
23  while (SerialGPS.available()) gps.encode(SerialGPS.read());
24  if (gps.location.isUpdated()) {
25    sendLocation(gps.location.lat(), gps.location.lng(),
26                 gps.speed.kmph(), gps.altitude.meters());
27    delay(10000); // every 10 s
28  }
29}
30
31void sendLocation(float lat, float lng, float spd, float alt) {
32  HTTPClient http;
33  http.begin("https://circuitdigest.cloud/api/v1/geolinker");
34  http.addHeader("Content-Type", "application/json");
35  http.addHeader("Authorization", "Bearer " + String(apiKey));
36
37  String body = "{";
38  body += "\"device_id\":\"" + String(device) + "\",";
39  body += "\"timestamp\":[\"" + String(millis()) + "\"],";
40  body += "\"lat\":[" + String(lat, 6) + "],";
41  body += "\"long\":[" + String(lng, 6) + "],";
42  body += "\"speed\":[" + String(spd, 1) + "],";
43  body += "\"battery\":[100],";
44  body += "\"payload\":[{\"altitude\":" + String(alt, 1) + "}]";
45  body += "}";
46
47  int code = http.POST(body);
48  Serial.println(code == 200 ? "Sent!" : "Error: " + String(code));
49  http.end();
50}