function calculateLoan() {
  var principal = document.getElementById("principal").value;
  var interestRate = document.getElementById("interestRate").value;
  var term = document.getElementById("term").value;
  
  var monthlyRate = interestRate/1200;
  var monthlyPayment = (principal * monthlyRate) / (1 - Math.pow(1 + monthlyRate, -term));
  
  var balance = principal;
  var table = "<table><tr><th>Month</th><th>Payment</th><th>Principal</th><th>Interest</th><th>Balance</th></tr>";
  
  for (var i = 1; i <= term; i++) {
    var interest = balance * monthlyRate;
    var principalPaid = monthlyPayment - interest;
    balance -= principalPaid;
    
    table += "<tr><td>" + i + "</td><td>$" + monthlyPayment.toFixed(2) + "</td><td>$" + principalPaid.toFixed(2) + "</td><td>$" + interest.toFixed(2) + "</td><td>$" + balance.toFixed(2) + "</td></tr>";
  }
  
  table += "</table>";
  document.getElementById("output").innerHTML = table;
}

This code takes input values for the loan principal, interest rate, and term from the user, and calculates the monthly payment, principal paid, interest paid, and loan balance for each month using a for loop. The output is displayed in an HTML table using the innerHTML property. The toFixed() method is used to format the output to two decimal places.

You can use this code in an HTML document with a form that has input fields for the loan details and a button that calls the calculateLoan() function. For example:

<form>
  <label for="principal">Loan Amount:</label>
  <input type="text" id="principal" name="principal"><br>

  <label for="interestRate">Interest Rate:</label>
  <input type="text" id="interestRate" name="interestRate"><br>

  <label for="term">Loan Term (months):</label>
  <input type="text" id="term" name="term"><br>

  <button type="button" onclick="calculateLoan()">Calculate</button>
</form>

<div id="output"></div>

This code will display the loan calculator form and the output table in the HTML document.

<?php
$principal = 100000; // loan amount
$interestRate = 5; // interest rate
$term = 360; // loan term in months
$monthlyPayment = ($principal * ($interestRate/1200)) / (1 - pow(1 + ($interestRate/1200), -$term));
$balance = $principal;

echo "<table>";
echo "<tr><th>Month</th><th>Payment</th><th>Principal</th><th>Interest</th><th>Balance</th></tr>";
for ($i = 1; $i <= $term; $i++) {
    $interest = $balance * ($interestRate/1200);
    $principal = $monthlyPayment - $interest;
    $balance = $balance - $principal;
    echo "<tr><td>".$i."</td><td>$".number_format($monthlyPayment, 2)."</td><td>$".number_format($principal, 2)."</td><td>$".number_format($interest, 2)."</td><td>$".number_format($balance, 2)."</td></tr>";
}
echo "</table>";
?>

This code calculates the monthly payment for a loan using the given principal, interest rate, and term in months. It then iterates over the loan term, calculating the principal, interest, and balance for each month, and displays the results in a table. The number_format() function is used to format the output to two decimal places. You can modify the values of $principal, $interestRate, and $term to fit your specific loan details.

Example: 

#include "esp_camera.h"
#include "WiFi.h"

// Replace with your network credentials
const char* ssid = "YourSSID";
const char* password = "YourWiFiPassword";

void setup() {
  Serial.begin(115200);

  // Connect to Wi-Fi network
  WiFi.begin(ssid, password);
  Serial.print("Connecting to Wi-Fi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("Wi-Fi connected successfully");

  // Initialize camera module
  camera_config_t config;
  config.ledc_channel = LEDC_CHANNEL_0;
  config.ledc_timer = LEDC_TIMER_0;
  config.pin_d0 = 5;
  config.pin_d1 = 18;
  config.pin_d2 = 19;
  config.pin_d3 = 21;
  config.pin_d4 = 36;
  config.pin_d5 = 39;
  config.pin_d6 = 34;
  config.pin_d7 = 35;
  config.pin_xclk = 0;
  config.pin_pclk = 22;
  config.pin_vsync = 25;
  config.pin_href = 23;
  config.pin_sscb_sda = 26;
  config.pin_sscb_scl = 27;
  config.xclk_freq_hz = 20000000;
  config.pixel_format = PIXFORMAT_JPEG;
  
  // Start the camera
  esp_err_t err = esp_camera_init(&config);
  if (err != ESP_OK) {
    Serial.printf("Camera init failed with error 0x%x", err);
    return;
  }
  Serial.println("Camera init successful");

}

void loop() {
  // Capture a photo
  camera_fb_t * fb = NULL;
  fb = esp_camera_fb_get();
  if (!fb) {
    Serial.println("Camera capture failed");
    return;
  }

  // Send the photo to a remote server
  WiFiClient client;
  if (client.connect("www.example.com", 80)) { // Replace with your server details
    String httpRequest = "POST /upload.php HTTP/1.1\r\n" +
                         "Host: www.example.com\r\n" +
                         "Content-Type: image/jpeg\r\n" +
                         "Content-Length: " + String(fb->len) + "\r\n\r\n";
    client.print(httpRequest);
    client.write(fb->buf, fb->len);
    Serial.println("Photo sent to server");
  } else {
    Serial.println("Failed to connect to server");
  }

  // Free the memory used by the photo buffer
  esp_camera_fb_return(fb);

  // Wait for 5 seconds before taking the next photo
  delay(5000);
}

This code connects the ESP32 CAM module to a WiFi network using the provided network credentials. It then initializes the camera module and captures a photo using the esp_camera_fb_get() function. The photo is sent to a remote server using a POST request with the WiFiClient class. Replace the server details with your own server address and the path to your PHP script for processing the image. The code then waits for 5 seconds before capturing the next photo. Note that you may need to adjust the camera configuration based on your module and adjust the delay time between photo captures based on your needs.

const int sensorPin = A0; // MQ-3 sensor connected to analog pin A0
const int ledPin = 13; // LED connected to digital pin 13
const float refVoltage = 5.0; // Reference voltage for the sensor
const float voutToAlcoholRatio = 0.0048828125; // Ratio to convert voltage output to alcohol concentration

void setup() {
  Serial.begin(9600); // Initialize serial communication at 9600 bps
  pinMode(ledPin, OUTPUT); // Set LED pin as output
}

void loop() {
  float sensorVoltage = analogRead(sensorPin) * refVoltage / 1023.0; // Read analog input and convert to voltage
  float alcoholConcentration = sensorVoltage / voutToAlcoholRatio; // Convert voltage to alcohol concentration
  Serial.print("Alcohol Concentration: "); // Print the alcohol concentration to the serial monitor
  Serial.print(alcoholConcentration);
  Serial.println(" ppm");
  if (alcoholConcentration >= 0.5) { // If the alcohol concentration is above the threshold, turn on the LED
    digitalWrite(ledPin, HIGH);
  } else {
    digitalWrite(ledPin, LOW); // Otherwise, turn off the LED
  }
  delay(1000); // Wait for 1 second before taking the next reading
}

This code reads the analog output of the MQ-3 alcohol sensor connected to analog pin A0 and converts the voltage output to alcohol concentration in parts per million (ppm) using the voutToAlcoholRatio. The alcohol concentration is then printed to the serial monitor and compared to a threshold of 0.5 ppm. If the concentration is above the threshold, the LED connected to digital pin 13 is turned on. The code then waits for 1 second before taking the next reading. Note that the threshold value may need to be adjusted depending on the sensitivity of the sensor and the desired level of accuracy.