René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Please help to solve errors in this Arduino code ","articleBody":"#include \u003cPulseSensorPlayground.h\u003e // Pulse Sensor library\n#include \u003cSoftwareSerial.h\u003e // Library for GSM module\n#include \u003cTinyGPS++.h\u003e // Library for GPS module\n#include \u003cLiquidCrystal_I2C.h\u003e // Library for I2C LCD\n\n#define HEARTBEAT_PIN A0 // Connect the heartbeat sensor to this pin\n#define SOUND_PIN A1 // Connect the sound sensor to this pin\n#define GSM_RX_PIN 10 // GSM module RX pin\n#define GSM_TX_PIN 11 // GSM module TX pin\n\n// Create objects for the required sensors\nPulseSensorPlayground pulseSensor;\nSoftwareSerial gsmSerial(GSM_RX_PIN, GSM_TX_PIN);\nTinyGPSPlus gps;\nLiquidCrystal_I2C lcd(0x27, 16, 2); // Change the address if necessary\n\n// Set threshold values for heartbeat and sound sensors\nconst int heartbeatThreshold = 90; // Adjust this value as needed\nconst int soundThreshold = 500; // Adjust this value as needed\n\n// Variables to store sensor readings\nint heartbeatValue = 0;\nint soundValue = 0;\n\n// Variables to manage emergency alerts\nbool emergencyAlertSent = false;\nunsigned long lastAlertTime = 0;\nconst unsigned long alertCooldown = 30000; // Minimum time between consecutive alerts (30 seconds)\n\nvoid sendSMS(const char* recipient, const char* message) {\n  gsmSerial.println(\"AT+CMGF=1\"); // Set SMS mode to text\n  delay(100);\n  gsmSerial.print(\"AT+CMGS=\\\"\");\n  gsmSerial.print(recipient);\n  gsmSerial.println(\"\\\"\");\n  delay(100);\n  gsmSerial.print(message);\n  delay(100);\n  gsmSerial.write(26); // End SMS message\n  delay(1000);\n}\n\n// Function to send an emergency alert via GSM\nvoid sendEmergencyAlert() {\n  if (!emergencyAlertSent \u0026\u0026 (millis() - lastAlertTime \u003e= alertCooldown)) {\n    // Get child's location\n    if (gps.location.isValid() \u0026\u0026 gps.location.age() \u003c 2000) {\n      float latitude = gps.location.lat();\n      float longitude = gps.location.lng();\n\n      // Send the emergency SMS with the Google Maps link\n      char googleMapsUrl[100];\n      snprintf(googleMapsUrl, sizeof(googleMapsUrl),\n               \"https://www.google.com/maps?q=%.6f,%.6f\", latitude, longitude);\n\n      char smsMessage[160];\n      snprintf(smsMessage, sizeof(smsMessage),\n               \"Emergency! Child needs help! Check their location: %s\", googleMapsUrl);\n\n      sendSMS(\"+919676475713\", smsMessage); // Replace with the recipient's phone number\n      emergencyAlertSent = true;\n      lastAlertTime = millis();\n    }\n  }\n}\n\nvoid setup() {\n  lcd.begin(16, 2);\n  lcd.print(\"Heartbeat: \");\n\n  pulseSensor.setup(HEARTBEAT_PIN);\n  gsmSerial.begin(9600);\n  // Initialize other sensors and modules (GPS, GSM)\n  // Add necessary setup for GPS module, if required\n}\n\nvoid loop() {\n  pulseSensor.update(); // Update the pulse sensor data\n  soundValue = analogRead(SOUND_PIN); // Read sound sensor data\n\n  // Check for incoming SMS\n  if (gsmSerial.available()) {\n    String sms = gsmSerial.readStringUntil('\\n');\n    sms.trim();\n    // Check if the received SMS contains the \"LOC\" command\n    if (sms.equalsIgnoreCase(\"LOC\")) {\n      // Send the child's location to the sender's phone number\n      if (gps.location.isValid() \u0026\u0026 gps.location.age() \u003c 2000) {\n        float latitude = gps.location.lat();\n        float longitude = gps.location.lng();\n        char googleMapsUrl[100];\n        snprintf(googleMapsUrl, sizeof(googleMapsUrl),\n                 \"https://www.google.com/maps?q=%.6f,%.6f\", latitude, longitude);\n\n        char smsMessage[160];\n        snprintf(smsMessage, sizeof(smsMessage),\n                 \"Child's Location: %s\", googleMapsUrl);\n        sendSMS(\"+919676475713\", smsMessage); // Replace with the sender's phone number\n      } else {\n        // GPS data is not valid or too old\n        sendSMS(\"+919676475713\", \"Unable to get child's location.\");\n      }\n    }\n  }\n\n  // Check for emergency conditions and send alerts\n  if (pulseSensor.sawNewSample()) {\n    heartbeatValue = pulseSensor.getBeatsPerMinute();\n    if (heartbeatValue \u003e heartbeatThreshold) {\n      sendEmergencyAlert();\n    }\n  }\n\n  if (soundValue \u003e soundThreshold) {\n    sendEmergencyAlert();\n  }\n\n  // Reset emergency alert flag if conditions are back to normal\n  if (emergencyAlertSent \u0026\u0026 heartbeatValue \u003c= heartbeatThreshold \u0026\u0026 soundValue \u003c= soundThreshold) {\n    emergencyAlertSent = false;\n  }\n\n  // Display the heartbeat value on the LCD\n  lcd.setCursor(11, 0); // Move the cursor to the 12th column of the first row\n  lcd.print(heartbeatValue);\n  lcd.print(\" bpm\");\n}\n","author":{"url":"https://github.com/sri415","@type":"Person","name":"sri415"},"datePublished":"2023-07-30T07:49:06.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/134/codelf/issues/134"}