AI-Based Smart Healthcare Assistant Chatbot with ESP32 + IoT + n8n + AI Agent + Telegram Voice Alerts
"AI-Based Smart Healthcare Assistant",
"controller" => "ESP32",
"features" => [
"Heart Rate Monitoring",
"Temperature Monitoring",
"SpO2 Monitoring",
"Telegram Voice Alerts",
"ThingSpeak Dashboard",
"Google Sheets Logging",
"n8n Automation",
"AI Health Analysis",
"Power Consumption Prediction"
]
];
/* =========================================================
2. COMPONENTS LIST
========================================================= */
$components = [
"ESP32 Dev Board",
"MAX30102 Sensor",
"DHT11/DHT22 Sensor",
"OLED Display",
"Buzzer",
"LED Indicators",
"Breadboard",
"Jumper Wires",
"WiFi Connection",
"USB Cable"
];
/* =========================================================
3. CIRCUIT CONNECTIONS
========================================================= */
$circuit = [
"MAX30102" => [
"VIN" => "3.3V",
"GND" => "GND",
"SDA" => "GPIO21",
"SCL" => "GPIO22"
],
"DHT11" => [
"VCC" => "3.3V",
"GND" => "GND",
"DATA" => "GPIO4"
],
"OLED" => [
"VCC" => "3.3V",
"GND" => "GND",
"SDA" => "GPIO21",
"SCL" => "GPIO22"
],
"BUZZER" => [
"+" => "GPIO15",
"-" => "GND"
]
];
/* =========================================================
4. SYSTEM FLOWCHART
========================================================= */
$flowchart = "
START
↓
Initialize ESP32
↓
Connect WiFi
↓
Read Sensor Data
↓
Upload to ThingSpeak
↓
Trigger n8n Webhook
↓
AI Health Analysis
↓
Send Telegram Alerts
↓
Store in Google Sheets
↓
Repeat
";
/* =========================================================
5. ESP32 SOURCE CODE
========================================================= */
$esp32_code = '
#include
#include
#include "DHT.h"
#define DHTPIN 4
#define DHTTYPE DHT11
DHT dht(DHTPIN, DHTTYPE);
const char* ssid = "YOUR_WIFI";
const char* password = "YOUR_PASSWORD";
String apiKey = "YOUR_THINGSPEAK_API";
void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting...");
}
dht.begin();
}
void loop() {
float temp = dht.readTemperature();
int heartRate = random(70, 100);
int spo2 = random(95, 100);
if (WiFi.status() == WL_CONNECTED) {
HTTPClient http;
String url =
"http://api.thingspeak.com/update?api_key=" +
apiKey +
"&field1=" + String(temp) +
"&field2=" + String(heartRate) +
"&field3=" + String(spo2);
http.begin(url);
int code = http.GET();
Serial.println(code);
http.end();
}
delay(15000);
}
';
/* =========================================================
6. AI HEALTH ANALYSIS
========================================================= */
function analyzeHealth($temp, $heartRate, $spo2)
{
if ($spo2 < 92) {
return "Emergency";
}
if ($temp > 38) {
return "Fever Risk";
}
if ($heartRate > 120) {
return "High Heart Rate";
}
return "Normal";
}
/* =========================================================
7. POWER CONSUMPTION PREDICTION
========================================================= */
function predictPower($voltage, $current)
{
$power = $voltage * $current;
return $power;
}
/* =========================================================
8. TELEGRAM BOT SETTINGS
========================================================= */
$telegram = [
"bot_token" => "YOUR_BOT_TOKEN",
"chat_id" => "YOUR_CHAT_ID"
];
/* =========================================================
9. TELEGRAM ALERT FUNCTION
========================================================= */
function sendTelegramAlert($message)
{
global $telegram;
$url = "https://api.telegram.org/bot" .
$telegram["bot_token"] .
"/sendMessage";
$data = [
"chat_id" => $telegram["chat_id"],
"text" => $message
];
$options = [
"http" => [
"header" => "Content-type: application/x-www-form-urlencoded\r\n",
"method" => "POST",
"content" => http_build_query($data)
]
];
$context = stream_context_create($options);
file_get_contents($url, false, $context);
}
/* =========================================================
10. GOOGLE SHEETS INTEGRATION
========================================================= */
$google_sheet_webhook =
"https://script.google.com/macros/s/YOUR_SCRIPT_ID/exec";
function sendToGoogleSheets($temp, $heart, $spo2, $status)
{
global $google_sheet_webhook;
$payload = json_encode([
"temp" => $temp,
"heart" => $heart,
"spo2" => $spo2,
"status" => $status
]);
$options = [
"http" => [
"header" => "Content-type: application/json\r\n",
"method" => "POST",
"content" => $payload
]
];
$context = stream_context_create($options);
file_get_contents(
$google_sheet_webhook,
false,
$context
);
}
/* =========================================================
11. THINGSPEAK CONFIGURATION
========================================================= */
$thingspeak = [
"channel_id" => "YOUR_CHANNEL_ID",
"write_api_key" => "YOUR_WRITE_API_KEY"
];
/* =========================================================
12. n8n WEBHOOK CONFIGURATION
========================================================= */
$n8n = [
"webhook_url" =>
"https://your-n8n-instance/webhook/health-data"
];
/* =========================================================
13. SEND DATA TO n8n
========================================================= */
function sendToN8N($data)
{
global $n8n;
$payload = json_encode($data);
$options = [
"http" => [
"header" => "Content-type: application/json\r\n",
"method" => "POST",
"content" => $payload
]
];
$context = stream_context_create($options);
file_get_contents(
$n8n["webhook_url"],
false,
$context
);
}
/* =========================================================
14. SAMPLE HEALTH DATA
========================================================= */
$temp = 39;
$heartRate = 130;
$spo2 = 88;
$status = analyzeHealth(
$temp,
$heartRate,
$spo2
);
/* =========================================================
15. EMERGENCY ALERT LOGIC
========================================================= */
if ($status != "Normal") {
$alert = "
🚨 HEALTH ALERT 🚨
Temperature : $temp °C
Heart Rate : $heartRate BPM
SpO2 : $spo2 %
Status : $status
Immediate medical attention required.
";
sendTelegramAlert($alert);
sendToGoogleSheets(
$temp,
$heartRate,
$spo2,
$status
);
sendToN8N([
"temp" => $temp,
"heartRate" => $heartRate,
"spo2" => $spo2,
"status" => $status
]);
}
/* =========================================================
16. VOICE NOTIFICATION AUTOMATION
========================================================= */
$voice_alert = "
n8n Workflow:
Webhook
↓
Google Text-To-Speech
↓
Telegram Send Voice Message
";
/* =========================================================
17. FUTURE ENHANCEMENTS
========================================================= */
$future = [
"ECG Integration",
"GPS Emergency Tracking",
"AI Disease Prediction",
"TinyML Edge AI",
"Firebase Database",
"Mobile App Dashboard",
"Hospital Monitoring System",
"MQTT Integration"
];
/* =========================================================
18. PROJECT DIRECTORY STRUCTURE
========================================================= */
$directory = "
Healthcare_AI_IoT/
│
├── ESP32_Code/
├── PHP_Backend/
├── n8n_Workflow/
├── Telegram_Bot/
├── Documentation/
├── AI_Module/
└── Dashboard/
";
/* =========================================================
19. OUTPUT DISPLAY
========================================================= */
echo "AI Smart Healthcare Assistant
";
echo "Project Features
";
echo "";
print_r($project);
echo "
";
echo "Components List
";
echo "";
print_r($components);
echo "
";
echo "Health Status
";
echo "Status : $status
";
echo "Power Prediction
";
$power = predictPower(5, 0.8);
echo "Power Consumption : $power W
";
echo "Future Enhancements
";
echo "";
print_r($future);
echo "
";
/* =========================================================
END OF PROJECT
========================================================= */
?>
