ESP32-CAM image gallery

Need Help With My Project
1

I am running the following code to get a doorbell camera working. Everything works well including notification on phone app except the captured image does not show in the app.

  • I am using image Gallery to get photo
  • I have data stream for photo with V0 / integer / default 0.
  • I am using blynk2.0 with plus
#define BLYNK_TEMPLATE_ID "xxxx"
#define BLYNK_DEVICE_NAME "DoorBell"
#define BLYNK_AUTH_TOKEN "xxxx"

#include "esp_camera.h"
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
//
// WARNING!!! Make sure that you have either selected ESP32 Wrover Module,
//            or another board which has PSRAM enabled
//

// Select camera model
//#define CAMERA_MODEL_WROVER_KIT
//#define CAMERA_MODEL_ESP_EYE
//#define CAMERA_MODEL_M5STACK_PSRAM
//#define CAMERA_MODEL_M5STACK_WIDE
#define CAMERA_MODEL_AI_THINKER

#include "camera_pins.h"


#define LED 4
#define BUTTON 2
#define NETLED 13

const char* ssid = "********";
const char* password = "********";
char auth[] = "***************";

String my_Local_IP;

void startCameraServer();


void capture()
{
  digitalWrite(LED,HIGH);
  uint32_t number = random(40000000);
  Serial.println("http://"+my_Local_IP+"/capture?_cb="+ (String)number);
  Blynk.setProperty(V0, "url", "http://"+my_Local_IP+"/capture?_cb="+(String)number);
  Blynk.logEvent("bell_ring");
  digitalWrite(LED,LOW);
  
}
void setup() {
  Serial.begin(115200);
  Blynk.begin(auth, ssid, password);
  pinMode(LED,OUTPUT);
  pinMode(NETLED,OUTPUT);
  pinMode(BUTTON,INPUT);
  Serial.setDebugOutput(true);
  Serial.println();

  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;
  //init with high specs to pre-allocate larger buffers
  if (psramFound()) {
    config.frame_size = FRAMESIZE_UXGA;
    config.jpeg_quality = 10;
    config.fb_count = 2;
  } else {
    config.frame_size = FRAMESIZE_SVGA;
    config.jpeg_quality = 12;
    config.fb_count = 1;
  }

#if defined(CAMERA_MODEL_ESP_EYE)
  pinMode(13, INPUT_PULLUP);
  pinMode(14, INPUT_PULLUP);
#endif

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

  sensor_t * s = esp_camera_sensor_get();
  //initial sensors are flipped vertically and colors are a bit saturated
  if (s->id.PID == OV3660_PID) {
    s->set_vflip(s, 1);//flip it back
    s->set_brightness(s, 1);//up the blightness just a bit
    s->set_saturation(s, -2);//lower the saturation
  }
  //drop down frame size for higher initial frame rate
  s->set_framesize(s, FRAMESIZE_QVGA);

#if defined(CAMERA_MODEL_M5STACK_WIDE)
  s->set_vflip(s, 1);
  s->set_hmirror(s, 1);
#endif

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
  digitalWrite(NETLED, HIGH);

  startCameraServer();

  Serial.print("Camera Ready! Use 'http://");
  Serial.print(WiFi.localIP());
  my_Local_IP = WiFi.localIP().toString();
  Serial.println("' to connect");
  //Blynk.begin(auth, ssid, password);
}

void loop() {
  // put your main code here, to run repeatedly:
  Blynk.run();
  if(digitalRead(BUTTON) == LOW)
  capture();

  
}

Any help is appreciated

2

I think that your url needs to be a publicly resolvable one, not one that’s local to your home network.
Test this by putting one of your images in a publicly accessible location and pushing that url to Blynk.

Also, this isn’t good practice…

You should use a timer to poll your button, or attach an interrupt to it.

Pete.

3

Hi Pete,

Thanks for your insight. I am fairly new to coding. I think I can figure out to test the image part but no idea how to use a timer. Time to go research and learn.

4

Pete.

5

Thanks Pete, checking it now