ESP32-CAM Face Detection

// ESP32-CAM Face Detection - Beginner
// Uses built-in CameraWebServer example as base
// Board: AI Thinker ESP32-CAM in Arduino IDE

#include "esp_camera.h"
#include <WiFi.h>
#include "esp_http_server.h"
#include "fd_forward.h"  // face detection forward declarations

// AI-Thinker ESP32-CAM pin map
#define PWDN_GPIO_NUM     32
#define RESET_GPIO_NUM    -1
#define XCLK_GPIO_NUM      0
#define SIOD_GPIO_NUM     26
#define SIOC_GPIO_NUM     27
#define Y9_GPIO_NUM       35
#define Y8_GPIO_NUM       34
#define Y7_GPIO_NUM       39
#define Y6_GPIO_NUM       36
#define Y5_GPIO_NUM       21
#define Y4_GPIO_NUM       19
#define Y3_GPIO_NUM       18
#define Y2_GPIO_NUM        5
#define VSYNC_GPIO_NUM    25
#define HREF_GPIO_NUM     23
#define PCLK_GPIO_NUM     22

const char* SSID = "YourSSID";
const char* PASS = "YourPassword";

void startCameraServer(); // declared in app_httpd.cpp (CameraWebServer example)

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

  camera_config_t config;
  config.ledc_channel = LEDC_CHANNEL_0;
  config.ledc_timer   = LEDC_TIMER_0;
  config.pin_d0 = Y2_GPIO_NUM;
  config.pin_d1 = Y3_GPIO_NUM;
  config.pin_d2 = Y4_GPIO_NUM;
  config.pin_d3 = Y5_GPIO_NUM;
  config.pin_d4 = Y6_GPIO_NUM;
  config.pin_d5 = Y7_GPIO_NUM;
  config.pin_d6 = Y8_GPIO_NUM;
  config.pin_d7 = Y9_GPIO_NUM;
  config.pin_xclk  = XCLK_GPIO_NUM;
  config.pin_pclk  = PCLK_GPIO_NUM;
  config.pin_vsync = VSYNC_GPIO_NUM;
  config.pin_href  = HREF_GPIO_NUM;
  config.pin_sscb_sda = SIOD_GPIO_NUM;
  config.pin_sscb_scl = SIOC_GPIO_NUM;
  config.pin_pwdn  = PWDN_GPIO_NUM;
  config.pin_reset = RESET_GPIO_NUM;
  config.xclk_freq_hz = 20000000;
  config.pixel_format = PIXFORMAT_JPEG;
  config.frame_size   = FRAMESIZE_SVGA; // 800x600
  config.jpeg_quality = 12;
  config.fb_count     = 1;

  esp_err_t err = esp_camera_init(&config);
  if (err != ESP_OK) {
    Serial.printf("Camera init failed: 0x%xn", err);
    return;
  }

  WiFi.begin(SSID, PASS);
  while (WiFi.status() != WL_CONNECTED) delay(500);
  Serial.println("WiFi connected");
  Serial.print("Stream URL: http://");
  Serial.print(WiFi.localIP());
  Serial.println(":81/stream");

  startCameraServer();
}

void loop() {
  delay(10000);
  // Face detection output appears in Serial Monitor
  // Enable via the web UI face detection toggle
}