Camera init failed with error 0x20002

Видеокамера на ESP32.

В этой статье речь пойдет об интересной плате на базе микроконтроллера ESP32. Плата называется ESP32-cam, она необычна тем, что на борту нее есть 2х мегапиксельная камера OV2640. Данную плату можно купить тут: http://ali.pub/3f04uj

Также понадобится usb/ttl преобразователь: http://ali.pub/3f156r

Обычно мощностей микроконтроллера не хватает для того чтоб обрабатывать видео поток. Но данная плата настолько мощная, что вполне себе тянет потоковое видео. Вот краткая табличка сравнения контроллеров ESP32 и ESP8266:

Как видно из таблички ESP32 на голову выше своего младшего брата ESP8266.

Чтож давайте посмотрим теперь, что же можно сделать с камерой. Если вы установили плату ESP32 в программе arduino ide допустим по моей инструкции, То в стандартных примерах Файл -> примеры -> ESP32 -> camera -> CameraWebServer

В данном примере нам нужно сделать три правки, чтоб камера начала показывать.

Во первых нужно закоментировать одну камеру и раскоментировать другую:

Далее нам нужно ввести SSID нашей wi-fi сети и пароль от нее:

Так как в модуле ESP32-cam нет гнезда под usb кабель, прошивать ее будем через usb/ttl адаптер. Вот схема подключения:

Обратите внимание, что для прошивки обязательно нужно замкнуть контакт IO0 и GND. Это обязательно иначе не зальется прошивка в ESP32. Также для заливки нужно выбрать плату “ESP32 Wrover Module” и Partition Scheme: ” Huge App (3MB no OTA)” . После того как вы все сделали так как я описал, скетч должен залиться без ошибок.

После заливки скетча нужно обязательно убрать перемычку IO0 и GND иначе ESP32 не загрузится в нормальном режиме. Итак включает плату и открываем монитор порта в программе Arduino ide. В мониторе порта должен показаться ip адрес устройства если ESP32 подключилась к wi-fi сети. Выглядит это так:

После этого вводим в браузер данный ip адрес и видим непосредственно настройки камеры и изображение с нее

Здесь много всяких настроек нет смысла их описывать. Даже есть распознавание лица, но только почему-то у меня оно не заработало. Если вы думаете, что разрешение камеры слишком маленькое, то его можно увеличить и например сделать оранжевым:

Давайте теперь уберем все лишнее, оставим только воспроизведение видео с камеры, сделаем для нее корпус. И получим самодельную камеру для видеонаблюдения.

Сначала отредактируем скетч, я это конечно же уже сделал, теперь он выглядит так:

В данном скетче нужно указать только SSID wi-fi сети и пароль, остальное уже настроено под данный модуль. Выглядит изображение с него вот так:

Как видим нет ничего лишнего просто изображение с довольно хорошим разрешением.

Чтож с выводом изображения разобрались, теперь нужно что-то придумать с корпусом. На ум пришла идея купить с Aliexpress муляж камеры и вмонтировать ее туда. Сама камера выглядит вот таким образом, от оригинала не отличить, только внутри пусто:

Разбирается камера без усилий, нужно открутить только 3 самореза. Так выглядит разобранный корпус:

Та часть которая находится в левой руке, к ней и будем крепить нашу камеру, для этого рассверлим отверстие сквозное и приклеим камеру на термоклей.

Я нашел блок питания 5В поэтому никаких dc-dc преобразователей ненужно. Так выглядит камера в сборе:

Ну и вот изображение с камеры уже из корпуса :

На этом собственно и все, как по мне так получилось довольно не плохо. Сделали из муляжа настоящую камеру, с которой при желании можно видеть изображение с любой точки планеты. Из минусов только то, что я пока не смог записывать с нее видео. Live стрим есть, а вот просмотреть запись пока нельзя.

Также я все это дело снял на видео и рассказал в нем.

Источник

ESP32-CAM Troubleshooting Guide: Most Common Problems Fixed

After releasing some projects with the ESP32-CAM, some readers reported issues when trying to use the ESP32-CAM. This guide is a compilation with the most common errors when using the ESP32-CAM and how to fix them.

We’ve released the following projects with the ESP32-CAM:

Note: some of our readers reported errors when trying to follow the ESP32-CAM project with Home Assistant. We’ve modified some lines on the code, so most of the problems related with that project should be fixed.

Please note that we couldn’t reproduce some of the errors on our end. However, we’ve gathered all the information given by our readers to get answers to the most common issues.

If you have a different problem or a different solution to these issues, you can share your tips by writing a comment below.

Most common errors:

1. Failed to connect to ESP32: Timed out waiting for packet header
2. Camera init failed with error 0x20001 or similar
3. Brownout detector or Guru meditation error
4. Sketch too big error – Wrong partition scheme selected
5. Board at COMX is not available – COM Port Not Selected
6. Psram error: GPIO isr service is not installed
7. Weak Wi-Fi Signal
8. No IP Address in Arduino IDE Serial Monitor
9. Can’t open web server
10. The image lags/shows lots of latency
11. esp_camera_fb_get(): Failed to get the frame on time!

1. Failed to connect to ESP32: Timed out waiting for packet header

This error means that the ESP32-CAM is not in flashing mode or it is not connected properly to the FTDI programmer.

Double-check the steps to upload code

Double-check that you’ve followed the exact steps to put your ESP32-CAM in flashing mode. Failing to complete one of the steps may result in that error. Here’s the steps you need to follow:

Connect the ESP32-CAM board to your computer using an FTDI programmer. Follow the next schematic diagram:

Important: GPIO 0 needs to be connected to GND so that you’re able to upload code.

Many FTDI programmers have a jumper that allows you to select 3.3V or 5V. Make sure the jumper is in the right place to select 5V.

Important: GPIO 0 needs to be connected to GND so that you’re able to upload code.

To upload the code, follow the next steps:

1) Go to Tools > Board and select AI-Thinker ESP32-CAM.

2) Go to Tools > Port and select the COM port the ESP32 is connected to.

3) Then, click the upload button to upload the code.

4) When you start to see these dots on the debugging window as shown below, press the ESP32-CAM on-board RST button.

After a few seconds, the code should be successfully uploaded to your board.

GPIO 0 must be connected to GND

Important: if you can’t upload the code, double-check that GPIO 0 is connected to GND and that you selected the right settings in the Tools menu. You should also press the on-board Reset button to restart your ESP32 in flashing mode. Also, check that you have the FTDI programmer jumper cap set to 5V.

Check the FTDI programmer you are using

One of our readers reported the following: “found out that you can program the board with a USB-to-TTL module model CP2102 and that the CH340 model does NOT work“. This is the FTDI programmer we’re using.

Power the ESP32-CAM with 5V

Some of our readers reported that they could only upload code when the ESP32 was powered with 5V. So, power the ESP32-CAM with 5V.

FTDI Programmer 5V

Measure the output voltage of your FTDI programmer (VCC and GND) using a Multimeter to ensure it’s providing 5V to your ESP32-CAM.

2. Camera init failed with error 0x20001 or similar

If you get this exact error, it means that your camera OVX is not connected properly to your ESP32 board or you have the wrong pin assignment in the code.

Sometimes, unplugging and plugging the FTDI programmer multiple times or restart the board multiple times, might solve the issue.

Camera not connected properly

The camera has a tiny connector and you must ensure it’s connected in the the right away and with a secure fit, otherwise it will fail to establish a connection.

Wrong pin assignment in the code

When you get this error, it might also mean that you didn’t select the right board in the define section or the pin definition is wrong for your board.

Make sure you select the right camera module in your projects. You just need to uncomment the right camera module and comment all the others:

In this example, we’re using the CAMERA_MODEL_AI_THINKER, so it’s the one that is enabled. Otherwise, it will fail the pin assignment and the camera will fail to init.

There are many esp32-cam boards being released (“fake boards”) that the wiring between the ESP32 and the OV camera might be different, so selecting the camera module, might not be enough. You might need to check each gpio declaration with your board pinout.

For example, M5Stack board without PSRAM has a different pin assignment than the M5STACK with PSRAM (defined on the code by default). So, you need to change the pin definition in the code accordingly to the board pinout.

Not enough power through USB source

If you’re powering your ESP32 through a USB port on your computer, it might not be supplying enough power.

Faulty FTDI programmer

Some readers also reported this problem was solved by replacing their actual FTDI programmer with this one.

The camera/connector is broken

If you get this error, it might also mean that your camera or the camera ribbon is broken. If that is the case, you may get a new OV2640 camera probe.

3. Brownout detector or Guru meditation error

When you open your Arduino IDE Serial monitor and the error message “Brownout detector was triggered” is constantly being printed over and over again. It means that there’s some sort of hardware problem.

It’s often related to one of the following issues:

• Poor quality USB cable;
• USB cable is too long;
• Board with some defect (bad solder joints);
• Bad computer USB port;
• Or not enough power provided by the computer USB port.

Solution:

• try a different shorter USB cable (with data wires)
• use a different computer USB port or use a USB hub with an external power supply
• some readers reported that when powering the ESP32-CAM with 5V, the issue was fixed.

Also, follow the suggestions described in issue 2.

4. Sketch too big error – Wrong partition scheme selected

When you get the following error:

It means that you haven’t selected the right partition scheme. Make sure you select the right partition scheme. In your Arduino IDE, go to Tools > Partition Scheme, select “Huge APP (3MB No OTA)“.

If you get the following error or similar:

It means that you haven’t selected the COM port in the Tools menu. In your Arduino IDE, go to Tools > Port and select the COM port the ESP32 is connected to.

It might also mean that the ESP32-CAM is not establishing a serial connection with your computer or it is not properly connected to the USB connector.

6. Psram error: GPIO isr service is not installed

You are using a board without PSRAM and you get the following error or similar:

when the board was initialized with the following settings:

Adding the following fixes the issues (it lowers the image resolution so it won’t need so much space to store images. However, as a result, you cannot get some high resolution formats due to the limited memory):

Note: face recognition and detection doesn’t work with boards without PSRAM. However, you can still use all the other functionalities of the board. For example, although you can’t use the face recognition and detection features of this project (ESP32-CAM Video Streaming and Face Recognition with Arduino IDE), you can still play with the example and explore the board features as long as you have the right pin assignment in the code.

7. Weak Wi-Fi Signal

Some readers reported that after powering the ESP32-CAM with 5V, they’ve gotten a more stable Wi-Fi signal. You can read this dedicated guide to learn how to connect an external antenna to the ESP32-CAM and extend Wi-Fi coverage.

The ESP32-CAM has the option to use either the built-in antenna or an external antenna. If your ESP32-CAM AI-Thinker has no Wi-Fi connection or poor connection, it might have the external antenna enabled. If you connect an external antenna to the connector, it should work fine.

Check if the jumper 0K resistor by the antenna connector is in the proper position for the desired antenna. There are 3 little white squares laid out like a “ Photo courtesy of Helmut Schoenborn

The following photo shows a closer look at that area. You can clearly see a small 0K resistor connecting to the built-in antenna.

Photo courtesy of Helmut Schoenborn

With board turned so the the PCB antenna is up:

• To use the PCB antenna, the resistor must be on the top position, like this: /
• For the antenna connector, the resistor must be on the bottom position, like this:

So, to enable the on-board antenna:

• Unsolder the resistor that goes to the antenna, it’s in this position
• And solder together the two connections to enable the on-board antenna.

8. No IP Address in Arduino IDE Serial Monitor

f you just see dots printed in the serial monitor (……), it means that your ESP32-CAM is not establishing a Wi-Fi connection with your router.

Double-check your network credentials

You need to make sure that you’ve typed your exact network credentials (SSID and password) in the following variables:

Select the right baud rate in the Arduino IDE Serial Monitor

If you don’t select the right baud rate in the Arduino IDE Serial Monitor, you won’t get your board IP address or you’ll just get garbage on the screen.

Make sure you select the right baud rate. In our examples with the ESP32-CAM, we use 115200 baud rate.

Reset the board multiple times

You might also need to press the ESP32-CAM on-board RESET button multiple times to restart your ESP and print the IP address during boot.

RX and TX swapped

Double-check the connections between your ESP32 board and the FTDI programmer. RX goes to TX and TX goes to RX. If these connections are swapped, the ESP32-CAM is not able to establish a serial communication with your computer.

Wi-Fi Range

If the router is far away from your ESP32 board, it might not be able to catch the Wi-Fi signal. Ensure that your ESP32-CAM is fairly close to your router.

9. Can’t open web server

If the ESP32-CAM is printing the IP address in your Arduino IDE Serial Monitor, but when you try to open the web server in your web browser you see a blank screen, it usually means that you are trying to access the ESP32-CAM web server with multiple web browser tabs.

At the moment, these ESP32-CAM sketches only work with one client connected at a time.

10. The image lags/shows lots of latency

Having some latency is normal for such a small and cheap camera. Some readers have suggested the following to reduce latency:

• Power the ESP32-CAM with a standalone 5V power supply
• Reduce the frame size with the following in your code:
  config.frame_size = FRAMESIZE_SVGA or config.frame_size = FRAMESIZE_VGA
• Use an external antenna.

11. esp_camera_fb_get(): Failed to get the frame on time!

We’ve personally never faced this issue. However, many readers are getting this error with their ESP32-CAM boards.

One of our readers (Fibula) suggested the following to solve this issue:

“Im using the ESP32-CAM Module 2MP OV2640 Camera sensor Module Type-C USB module from Aliexpress. Although not mentioned, It doesn’t have the extra PSRAM the other M5 models do, and the camera has one changed IO pin.

The CameraWebServer Arduino example we’re probably all using doesn’t have this ESP32-CAM model defined.

You need to add it yourself in the main tab add:

And in the camera_pins.h tab add the following:

And you’re good to go.

Also note that the max resolution of the bare ESP32-CAM Module is XGA 1024×768, I assume also because of the lack of PSRAM. “

Using larger microSD card sizes

According to he datasheet, the ESP32-CAM should only supports 4GB microSD cards.

However, we’ve tested with 16GB microSD card and it works well.

You might not be able to store more than 4GB, even though you have 16GB. We haven’t tested storing more than 4GB, so we’re not sure about this.

Are these projects compatible with M5Stack board?

Yes, the M5Stack ESP32 board is compatible with out projects. However, you must check your camera pinout to ensure you have the right assignment in the code.

You can check the M5Stack camera connections here.

How to set a fixed the IP Address

To set a static/fixed IP address, you can follow the next tutorial:

Setting ESP32-CAM as Access Point (AP)

You can set your ESP32-CAM as an Access Point (AP). This means you are able to connect to your ESP32-CAM directly without having to connect to your router. You can use the following code to set your video streaming web server as an Access Point:

To better understand how it works, you can read the next tutorial:

Learn how to program and build 17 projects with the ESP32-CAM using Arduino IDE DOWNLOAD »

Wrapping Up

We hope you’ve found this troubleshooting guide useful and you were able to make your ESP32-CAM work with our projects.

Источник

After releasing some projects with the ESP32-CAM, some readers reported issues when trying to use the ESP32-CAM. This guide is a compilation with the most common errors when using the ESP32-CAM and how to fix them.

We’ve released the following projects with the ESP32-CAM:

• Video Streaming, Face Detection and Face Recognition
• ESP32 IP CAM – Video Streaming (Home Assistant and Node-RED)
• Take Photo and Save to MicroSD Card
• PIR Motion Detector with Photo Capture
• Take Photo, Save to SPIFFS and Display in Web Server

Note: some of our readers reported errors when trying to follow the ESP32-CAM project with Home Assistant. We’ve modified some lines on the code, so most of the problems related with that project should be fixed.

Please note that we couldn’t reproduce some of the errors on our end. However, we’ve gathered all the information given by our readers to get answers to the most common issues.

If you have a different problem or a different solution to these issues, you can share your tips by writing a comment below.

Most common errors:

1. Failed to connect to ESP32: Timed out waiting for packet header
2. Camera init failed with error 0x20001 or similar
3. Brownout detector or Guru meditation error
4. Sketch too big error – Wrong partition scheme selected
5. Board at COMX is not available – COM Port Not Selected
6. Psram error: GPIO isr service is not installed
7. Weak Wi-Fi Signal
8. No IP Address in Arduino IDE Serial Monitor
9. Can’t open web server
10. The image lags/shows lots of latency
11. esp_camera_fb_get(): Failed to get the frame on time!

1. Failed to connect to ESP32: Timed out waiting for packet header

This error means that the ESP32-CAM is not in flashing mode or it is not connected properly to the FTDI programmer.

Double-check the steps to upload code

Double-check that you’ve followed the exact steps to put your ESP32-CAM in flashing mode. Failing to complete one of the steps may result in that error. Here’s the steps you need to follow:

Connect the ESP32-CAM board to your computer using an FTDI programmer. Follow the next schematic diagram:

Important: GPIO 0 needs to be connected to GND so that you’re able to upload code.

Many FTDI programmers have a jumper that allows you to select 3.3V or 5V. Make sure the jumper is in the right place to select 5V.

Important: GPIO 0 needs to be connected to GND so that you’re able to upload code.

To upload the code, follow the next steps:

1) Go to Tools > Board and select AI-Thinker ESP32-CAM.

2) Go to Tools > Port and select the COM port the ESP32 is connected to.

3) Then, click the upload button to upload the code.

4) When you start to see these dots on the debugging window as shown below, press the ESP32-CAM on-board RST button.

After a few seconds, the code should be successfully uploaded to your board.

GPIO 0 must be connected to GND

Important: if you can’t upload the code, double-check that GPIO 0 is connected to GND and that you selected the right settings in the Tools menu. You should also press the on-board Reset button to restart your ESP32 in flashing mode. Also, check that you have the FTDI programmer jumper cap set to 5V.

Check the FTDI programmer you are using

One of our readers reported the following: “found out that you can program the board with a USB-to-TTL module model CP2102 and that the CH340 model does NOT work“. This is the FTDI programmer we’re using.

Power the ESP32-CAM with 5V

Some of our readers reported that they could only upload code when the ESP32 was powered with 5V. So, power the ESP32-CAM with 5V.

FTDI Programmer 5V

Measure the output voltage of your FTDI programmer (VCC and GND) using a Multimeter to ensure it’s providing 5V to your ESP32-CAM.

2. Camera init failed with error 0x20001 or similar

If you get this exact error, it means that your camera OVX is not connected properly to your ESP32 board or you have the wrong pin assignment in the code.

Sometimes, unplugging and plugging the FTDI programmer multiple times or restart the board multiple times, might solve the issue.

Camera not connected properly

The camera has a tiny connector and you must ensure it’s connected in the the right away and with a secure fit, otherwise it will fail to establish a connection.

Wrong pin assignment in the code

When you get this error, it might also mean that you didn’t select the right board in the define section or the pin definition is wrong for your board.

Make sure you select the right camera module in your projects. You just need to uncomment the right camera module and comment all the others:

//#define CAMERA_MODEL_WROVER_KIT
//#define CAMERA_MODEL_M5STACK_PSRAM
#define CAMERA_MODEL_AI_THINKER

In this example, we’re using the CAMERA_MODEL_AI_THINKER, so it’s the one that is enabled. Otherwise, it will fail the pin assignment and the camera will fail to init.

There are many esp32-cam boards being released (“fake boards”) that the wiring between the ESP32 and the OV camera might be different, so selecting the camera module, might not be enough. You might need to check each gpio declaration with your board pinout.

For example, M5Stack board without PSRAM has a different pin assignment than the M5STACK with PSRAM (defined on the code by default). So, you need to change the pin definition in the code accordingly to the board pinout.

Not enough power through USB source

If you’re powering your ESP32 through a USB port on your computer, it might not be supplying enough power.

Faulty FTDI programmer

Some readers also reported this problem was solved by replacing their actual FTDI programmer with this one.

The camera/connector is broken

If you get this error, it might also mean that your camera or the camera ribbon is broken. If that is the case, you may get a new OV2640 camera probe.

3. Brownout detector or Guru meditation error

When you open your Arduino IDE Serial monitor and the error message “Brownout detector was triggered” is constantly being printed over and over again. It means that there’s some sort of hardware problem.

It’s often related to one of the following issues:

• Poor quality USB cable;
• USB cable is too long;
• Board with some defect (bad solder joints);
• Bad computer USB port;
• Or not enough power provided by the computer USB port.

Solution: 

• try a different shorter USB cable (with data wires)
• use a different computer USB port or use a USB hub with an external power supply
• some readers reported that when powering the ESP32-CAM with 5V, the issue was fixed.

Also, follow the suggestions described in issue 2.

4. Sketch too big error – Wrong partition scheme selected

When you get the following error:

Sketch too big; see http://www.arduino.cc/en/Guide/Troubleshooting#size for tips on reducing it.
Error compiling for board ESP32 Dev Module.

It means that you haven’t selected the right partition scheme. Make sure you select the right partition scheme. In your Arduino IDE, go to Tools > Partition Scheme, select “Huge APP (3MB No OTA)“.

5. Board at COMX is not available – COM Port Not Selected

If you get the following error or similar:

serial.serialutil.SerialException: could not open port 'COM8': WindowsError(2, 'The system cannot find the file specified.')
Failed to execute script esptool
the selected serial port Failed to execute script esptool
 does not exist or your board is not connected
Board at COM8 is not available

It means that you haven’t selected the COM port in the Tools menu. In your Arduino IDE, go to Tools > Port and select the COM port the ESP32 is connected to.

It might also mean that the ESP32-CAM is not establishing a serial connection with your computer or it is not properly connected to the USB connector.

6. Psram error: GPIO isr service is not installed

You are using a board without PSRAM and you get the following error or similar:

E (161) gpio: gpio_isr_handler_remove(380): GPIO isr service is not installed, call gpio_install_isr_service() first
Camera init failed with error 0x101

when the board was initialized with the following settings:

config.frame_size = FRAMESIZE_UXGA;
config.jpeg_quality = 10;
config.fb_count = 2;

Adding the following fixes the issues (it lowers the image resolution so it won’t need so much space to store images. However, as a result, you cannot get some high resolution formats due to the limited memory):

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;
}

Note: face recognition and detection doesn’t work with boards without PSRAM. However, you can still use all the other functionalities of the board. For example, although you can’t use the face recognition and detection features of this project (ESP32-CAM Video Streaming and Face Recognition with Arduino IDE), you can still play with the example and explore the board features as long as you have the right pin assignment in the code.

7. Weak Wi-Fi Signal

Some readers reported that after powering the ESP32-CAM with 5V, they’ve gotten a more stable Wi-Fi signal. You can read this dedicated guide to learn how to connect an external antenna to the ESP32-CAM and extend Wi-Fi coverage.

The ESP32-CAM has the option to use either the built-in antenna or an external antenna. If your ESP32-CAM AI-Thinker has no Wi-Fi connection or poor connection, it might have the external antenna enabled. If you connect an external antenna to the connector, it should work fine.

Check if the jumper 0K resistor by the antenna connector is in the proper position for the desired antenna. There are 3 little white squares laid out like a “<” with the middle position being common.

The following photo shows a closer look at that area. You can clearly see a small 0K resistor connecting to the built-in antenna.

With board turned so the the PCB antenna is up:

• To use the PCB antenna, the resistor must be on the top position, like this: /
• For the antenna connector, the resistor must be on the bottom position, like this:

So, to enable the on-board antenna:

• Unsolder the resistor that goes to the antenna, it’s in this position
• And solder together the two connections to enable the on-board antenna.

8. No IP Address in Arduino IDE Serial Monitor

f you just see dots printed in the serial monitor (……), it means that your ESP32-CAM is not establishing a Wi-Fi connection with your router.

Double-check your network credentials

You need to make sure that you’ve typed your exact network credentials (SSID and password) in the following variables:

const char* ssid = "REPLACE_WITH_YOUR_SSID";
const char* password = "REPLACE_WITH_YOUR_PASSWORD";

Select the right baud rate in the Arduino IDE Serial Monitor

If you don’t select the right baud rate in the Arduino IDE Serial Monitor, you won’t get your board IP address or you’ll just get garbage on the screen.

Make sure you select the right baud rate. In our examples with the ESP32-CAM, we use 115200 baud rate.

Reset the board multiple times

You might also need to press the ESP32-CAM on-board RESET button multiple times to restart your ESP and print the IP address during boot.

RX and TX swapped

Double-check the connections between your ESP32 board and the FTDI programmer. RX goes to TX and TX goes to RX. If these connections are swapped, the ESP32-CAM is not able to establish a serial communication with your computer.

Wi-Fi Range

If the router is far away from your ESP32 board, it might not be able to catch the Wi-Fi signal. Ensure that your ESP32-CAM is fairly close to your router.

9. Can’t open web server

If the ESP32-CAM is printing the IP address in your Arduino IDE Serial Monitor, but when you try to open the web server in your web browser you see a blank screen, it usually means that you are trying to access the ESP32-CAM web server with multiple web browser tabs.

At the moment, these ESP32-CAM sketches only work with one client connected at a time.

10. The image lags/shows lots of latency

Having some latency is normal for such a small and cheap camera. Some readers have suggested the following to reduce latency:

• Power the ESP32-CAM with a standalone 5V power supply
• Reduce the frame size with the following in your code:
  config.frame_size = FRAMESIZE_SVGA or config.frame_size = FRAMESIZE_VGA
• Use an external antenna.

11. esp_camera_fb_get(): Failed to get the frame on time!

We’ve personally never faced this issue. However, many readers are getting this error with their ESP32-CAM boards.

One of our readers (Fibula) suggested the following to solve this issue:

“Im using the ESP32-CAM Module 2MP OV2640 Camera sensor Module Type-C USB module from Aliexpress. Although not mentioned, It doesn’t have the extra PSRAM the other M5 models do, and the camera has one changed IO pin.

See here: https://github.com/m5stack/m5stack-cam-psram/blob/master/README.md and scroll down to Interface Comparison.

The CameraWebServer Arduino example we’re probably all using doesn’t have this ESP32-CAM model defined.

You need to add it yourself in the main tab add:

#define CAMERA_MODEL_M5STACK_NO_PSRAM

And in the camera_pins.h tab add the following:

#elif defined(CAMERA_MODEL_M5STACK_NO_PSRAM)
#define PWDN_GPIO_NUM -1
#define RESET_GPIO_NUM 15
#define XCLK_GPIO_NUM 27
#define SIOD_GPIO_NUM 25
#define SIOC_GPIO_NUM 23
#define Y9_GPIO_NUM 19
#define Y8_GPIO_NUM 36
#define Y7_GPIO_NUM 18
#define Y6_GPIO_NUM 39
#define Y5_GPIO_NUM 5
#define Y4_GPIO_NUM 34
#define Y3_GPIO_NUM 35
#define Y2_GPIO_NUM 17
#define VSYNC_GPIO_NUM 22
#define HREF_GPIO_NUM 26
#define PCLK_GPIO_NUM 21

And you’re good to go.

Also note that the max resolution of the bare ESP32-CAM Module is XGA 1024×768, I assume also because of the lack of PSRAM. “

We hope this suggestion solves your issue. Let us know in the comments section.

Using larger microSD card sizes

According to he datasheet, the ESP32-CAM should only supports 4GB microSD cards.

However, we’ve tested with 16GB microSD card and it works well.

You might not be able to store more than 4GB, even though you have 16GB. We haven’t tested storing more than 4GB, so we’re not sure about this.

Are these projects compatible with M5Stack board?

Yes, the M5Stack ESP32 board is compatible with out projects. However, you must check your camera pinout to ensure you have the right assignment in the code.

You can check the M5Stack camera connections here.

How to set a fixed the IP Address

To set a static/fixed IP address, you can follow the next tutorial:

• ESP32 Static/Fixed IP Address

Setting ESP32-CAM as Access Point (AP)

You can set your ESP32-CAM as an Access Point (AP). This means you are able to connect to your ESP32-CAM directly without having to connect to your router. You can use the following code to set your video streaming web server as an Access Point:

/*********
  Rui Santos
  Complete project details at https://RandomNerdTutorials.com/esp32-cam-video-streaming-web-server-camera-home-assistant/
  
  IMPORTANT!!! 
   - Select Board "AI Thinker ESP32-CAM"
   - GPIO 0 must be connected to GND to upload a sketch
   - After connecting GPIO 0 to GND, press the ESP32-CAM on-board RESET button to put your board in flashing mode
  
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files.

  The above copyright notice and this permission notice shall be included in all
  copies or substantial portions of the Software.
*********/

#include "esp_camera.h"
#include <WiFi.h>
#include "esp_timer.h"
#include "img_converters.h"
#include "Arduino.h"
#include "fb_gfx.h"
#include "soc/soc.h" //disable brownout problems
#include "soc/rtc_cntl_reg.h"  //disable brownout problems
#include "esp_http_server.h"

// Replace with your network credentials
const char* ssid     = "ESP32-Access-Point";
const char* password = "123456789";

#define PART_BOUNDARY "123456789000000000000987654321"

// This project was tested with the AI Thinker Model, M5STACK PSRAM Model and M5STACK WITHOUT PSRAM
#define CAMERA_MODEL_AI_THINKER
//#define CAMERA_MODEL_M5STACK_PSRAM
//#define CAMERA_MODEL_M5STACK_WITHOUT_PSRAM

// Not tested with this model
//#define CAMERA_MODEL_WROVER_KIT

#if defined(CAMERA_MODEL_WROVER_KIT)
  #define PWDN_GPIO_NUM    -1
  #define RESET_GPIO_NUM   -1
  #define XCLK_GPIO_NUM    21
  #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      19
  #define Y4_GPIO_NUM      18
  #define Y3_GPIO_NUM       5
  #define Y2_GPIO_NUM       4
  #define VSYNC_GPIO_NUM   25
  #define HREF_GPIO_NUM    23
  #define PCLK_GPIO_NUM    22

#elif defined(CAMERA_MODEL_M5STACK_PSRAM)
  #define PWDN_GPIO_NUM     -1
  #define RESET_GPIO_NUM    15
  #define XCLK_GPIO_NUM     27
  #define SIOD_GPIO_NUM     25
  #define SIOC_GPIO_NUM     23
  
  #define Y9_GPIO_NUM       19
  #define Y8_GPIO_NUM       36
  #define Y7_GPIO_NUM       18
  #define Y6_GPIO_NUM       39
  #define Y5_GPIO_NUM        5
  #define Y4_GPIO_NUM       34
  #define Y3_GPIO_NUM       35
  #define Y2_GPIO_NUM       32
  #define VSYNC_GPIO_NUM    22
  #define HREF_GPIO_NUM     26
  #define PCLK_GPIO_NUM     21

#elif defined(CAMERA_MODEL_M5STACK_WITHOUT_PSRAM)
  #define PWDN_GPIO_NUM     -1
  #define RESET_GPIO_NUM    15
  #define XCLK_GPIO_NUM     27
  #define SIOD_GPIO_NUM     25
  #define SIOC_GPIO_NUM     23
  
  #define Y9_GPIO_NUM       19
  #define Y8_GPIO_NUM       36
  #define Y7_GPIO_NUM       18
  #define Y6_GPIO_NUM       39
  #define Y5_GPIO_NUM        5
  #define Y4_GPIO_NUM       34
  #define Y3_GPIO_NUM       35
  #define Y2_GPIO_NUM       17
  #define VSYNC_GPIO_NUM    22
  #define HREF_GPIO_NUM     26
  #define PCLK_GPIO_NUM     21

#elif defined(CAMERA_MODEL_AI_THINKER)
  #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
#else
  #error "Camera model not selected"
#endif

static const char* _STREAM_CONTENT_TYPE = "multipart/x-mixed-replace;boundary=" PART_BOUNDARY;
static const char* _STREAM_BOUNDARY = "rn--" PART_BOUNDARY "rn";
static const char* _STREAM_PART = "Content-Type: image/jpegrnContent-Length: %urnrn";

httpd_handle_t stream_httpd = NULL;

static esp_err_t stream_handler(httpd_req_t *req){
  camera_fb_t * fb = NULL;
  esp_err_t res = ESP_OK;
  size_t _jpg_buf_len = 0;
  uint8_t * _jpg_buf = NULL;
  char * part_buf[64];

  res = httpd_resp_set_type(req, _STREAM_CONTENT_TYPE);
  if(res != ESP_OK){
    return res;
  }

  while(true){
    fb = esp_camera_fb_get();
    if (!fb) {
      Serial.println("Camera capture failed");
      res = ESP_FAIL;
    } else {
      if(fb->width > 400){
        if(fb->format != PIXFORMAT_JPEG){
          bool jpeg_converted = frame2jpg(fb, 80, &_jpg_buf, &_jpg_buf_len);
          esp_camera_fb_return(fb);
          fb = NULL;
          if(!jpeg_converted){
            Serial.println("JPEG compression failed");
            res = ESP_FAIL;
          }
        } else {
          _jpg_buf_len = fb->len;
          _jpg_buf = fb->buf;
        }
      }
    }
    if(res == ESP_OK){
      size_t hlen = snprintf((char *)part_buf, 64, _STREAM_PART, _jpg_buf_len);
      res = httpd_resp_send_chunk(req, (const char *)part_buf, hlen);
    }
    if(res == ESP_OK){
      res = httpd_resp_send_chunk(req, (const char *)_jpg_buf, _jpg_buf_len);
    }
    if(res == ESP_OK){
      res = httpd_resp_send_chunk(req, _STREAM_BOUNDARY, strlen(_STREAM_BOUNDARY));
    }
    if(fb){
      esp_camera_fb_return(fb);
      fb = NULL;
      _jpg_buf = NULL;
    } else if(_jpg_buf){
      free(_jpg_buf);
      _jpg_buf = NULL;
    }
    if(res != ESP_OK){
      break;
    }
    //Serial.printf("MJPG: %uBn",(uint32_t)(_jpg_buf_len));
  }
  return res;
}

void startCameraServer(){
  httpd_config_t config = HTTPD_DEFAULT_CONFIG();
  config.server_port = 80;

  httpd_uri_t index_uri = {
    .uri       = "/",
    .method    = HTTP_GET,
    .handler   = stream_handler,
    .user_ctx  = NULL
  };
  
  //Serial.printf("Starting web server on port: '%d'n", config.server_port);
  if (httpd_start(&stream_httpd, &config) == ESP_OK) {
    httpd_register_uri_handler(stream_httpd, &index_uri);
  }
}

void setup() {
  WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); //disable brownout detector
 
  Serial.begin(115200);
  Serial.setDebugOutput(false);
  
  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; 
  
  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;
  }
  
  // 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;
  }
  // Connect to Wi-Fi network with SSID and password
  Serial.print("Setting AP (Access Point)…");
  // Remove the password parameter, if you want the AP (Access Point) to be open
  WiFi.softAP(ssid, password);

  IPAddress IP = WiFi.softAPIP();
  Serial.print("Camera Stream Ready! Connect to the ESP32 AP and go to: http://");
  Serial.println(IP);
  
  // Start streaming web server
  startCameraServer();
}

void loop() {
  delay(1);
}

View raw code

To better understand how it works, you can read the next tutorial:

• ESP32 Access Point (AP) for Web Server

Wrapping Up

We hope you’ve found this troubleshooting guide useful and you were able to make your ESP32-CAM work with our projects.

If you have any other issues or suggestions on how to fix them, please post a comment below.

If you like this project, you may also like other projects with the ESP32-CAM:

• ESP32-CAM AI-Thinker Pinout Guide: GPIOs Usage Explained
• Video Streaming, Face Detection and Face Recognition
• Build ESP32-CAM Projects (eBook)
• Read all our ESP32-CAM Projects, Tutorials and Guides

Thank you for reading.

P.S. It is very difficult to understand what’s wrong with your project when we can’t reproduce the error on our end. However, if you post the error, there might be other readers with the same issue/solution, so we encourage you to interact in the comment’s section.

I can successfully flash my ESP32-CAM to do the blink demo but when I try to run the code below I get the following error (b/t the asterisks/bar.)

It seems the «Serial Camera Control Bus» (SCCB) is not able to connect to write to the buffer in memory. I tried to double check the code I borrowed to see if pointer were coded with typos or errors but to be honest that is a little outside of my comprehension. Then there is the «camera_init(): Failed to set frame size» and the «esp_camera_init() failure error 0x20002»

After trying to trouble shoot and research online it seems as if the camera pins aren’t connecting properly or there is a failure to write to memory.

If anyone has a better grasp on C++ and could help me further troubleshoot or point me in the right direction I would greatly appreciate it.

[E][sccb.c:154] SCCB_Write(): SCCB_Write Failed addr:0x30, reg:0xe1, data:0x67, ret:263
[E][sccb.c:154] SCCB_Write(): SCCB_Write Failed addr:0x30, reg:0xff, data:0x01, ret:263
[E][camera.c:1215] camera_init(): Failed to set frame size
[E][camera.c:1270] esp_camera_init(): Camera init failed with error 0x20002

Code to send a JPEG image to my Apache server using php://input so they can be stored on my computer:

 #include "esp_http_client.h"
 #include "esp_camera.h"
 #include "WiFi.h"
 #include "Arduino.h"

 const char* ssid = "************";
 const char* password = "***************";
 int capture_interval = 20000; // Microseconds between captures
 const char *post_url = "***************/wifi/index.php"; 
 // Location where images are POSTED

 bool internet_connected = false;
 long current_millis;
 long last_capture_millis = 0;

 // CAMERA_MODEL_AI_THINKER
 #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

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

   if (init_wifi()) { // Connected to WiFi
     internet_connected = true;
     Serial.println("Internet connected");
   }

   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 = 10;
     config.fb_count = 1;
   }

   // 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;
   }
 }

 bool init_wifi()
 {
   int connAttempts = 0;
   Serial.println("rnConnecting to: " + String(ssid));
   WiFi.begin(ssid, password);
   while (WiFi.status() != WL_CONNECTED ) {
     delay(500);
     Serial.print(".");
     if (connAttempts > 10) return false;
     connAttempts++;
   }
   return true;
 }


 esp_err_t _http_event_handler(esp_http_client_event_t *evt)
 {
   switch (evt->event_id) {
     case HTTP_EVENT_ERROR:
       Serial.println("HTTP_EVENT_ERROR");
       break;
     case HTTP_EVENT_ON_CONNECTED:
       Serial.println("HTTP_EVENT_ON_CONNECTED");
       break;
     case HTTP_EVENT_HEADER_SENT:
       Serial.println("HTTP_EVENT_HEADER_SENT");
       break;
     case HTTP_EVENT_ON_HEADER:
       Serial.println();
       Serial.printf("HTTP_EVENT_ON_HEADER, key=%s, value=%s", evt->header_key, evt->header_value);
       break;
     case HTTP_EVENT_ON_DATA:
       Serial.println();
       Serial.printf("HTTP_EVENT_ON_DATA, len=%d", evt->data_len);
       if (!esp_http_client_is_chunked_response(evt->client)) {
         // Write out data
         // printf("%.*s", evt->data_len, (char*)evt->data);
       }
       break;
     case HTTP_EVENT_ON_FINISH:
       Serial.println("");
       Serial.println("HTTP_EVENT_ON_FINISH");
       break;
     case HTTP_EVENT_DISCONNECTED:
       Serial.println("HTTP_EVENT_DISCONNECTED");
       break;
   }
   return ESP_OK;
 }

 static esp_err_t take_send_photo()
  {
    Serial.println("Taking picture...");
    camera_fb_t *fb = NULL;
    esp_err_t res = ESP_OK;

   fb = esp_camera_fb_get();
   if (!fb) {
     Serial.println("Camera capture failed");
     return ESP_FAIL;
   }

   esp_http_client_handle_t http_client;

   esp_http_client_config_t config_client = {0};
   config_client.url = post_url;
   config_client.event_handler = _http_event_handler;
   config_client.method = HTTP_METHOD_POST;

   http_client = esp_http_client_init(&config_client);

   esp_http_client_set_post_field(http_client, (const char *)fb->buf, fb->len);

   esp_http_client_set_header(http_client, "Content-Type", "image/jpg");

   esp_err_t err = esp_http_client_perform(http_client);
   if (err == ESP_OK) {
      Serial.print("esp_http_client_get_status_code: ");
     Serial.println(esp_http_client_get_status_code(http_client));
   }

   esp_http_client_cleanup(http_client);

   esp_camera_fb_return(fb);
 }

 void loop()
 {
   // TODO check Wifi and reconnect if needed

   current_millis = millis();
   if (current_millis - last_capture_millis > capture_interval) { // Take another picture
     last_capture_millis = millis();
     take_send_photo();
   }
 }

• 
  0
  

  Q:

  how about it’s quality

  A:

  la qualità, comparata al prezzo è molto buona. E’ un pò scadente con poca luce

  
  xradiomusicx · answered on November 15,2021

  Quality of the microcontroller itself is fine, nothing seems to be noticeably cheap or poorly done. Camera quality is ok, with resolution up to 1600×1200. The images don’t look like anything amazing but are pretty good considering the size and cost of the unit.

  
  BG354381950 · answered on August 31,2021

  Notso good. What you expect from device for 8 dollars? Omitting quality is one con: camera sometimes hanging on…

  
  _PeTe_ · answered on March 30,2020

  I think it’s cheap, the packaging is acceptable, and it works well.

  
  JHFDF3432 · answered on March 08,2020

  productwas bit a of damaged on the pins and the package was skecthy

  
  markku · answered on March 06,2020

  
  0
  

  Q:

  How can i power it

  A:

  5v 2 Amp power pack

  
  ChrisN79 · answered on March 08,2022

  You can power it with a 5v power supply

  
  xradiomusicx · answered on November 15,2021

  Lots of options for power. I use a Micro USB to DIP female adapter board and power it with an old cell phone adapter & cord.

  
  Tinker · answered on February 04,2021

  Iencourage you to look videos in Youtube. There are several good clips.

  
  lindfors.juha · answered on October 23,2019

  Power supply:5V

  
  wujiahui · answered on September 09,2019

  
  0
  

  Q:

  how does this connect to blue tooth?

  A:

  It depends on how the module is programmed. I use it in conjunction with HomeKit. There are different applications. Search GitHub for ESP Cam, where you will find it.

  
  goddz · answered on October 14,2021

  to make various applications

  
  doriop · answered on September 07,2021

  Youhave to program it. Arduino IDE can do it.

  
  Zark · answered on August 01,2020

  ImArdunio IDE load the right sketch

  
  MrWhoo · answered on April 06,2020

  github.com/donny681/ESP32_CAMERA_QR/wiki
  Maybe you can find the answer

  
  wujiahui · answered on August 26,2019

  
  0
  

  Q:

  Is there a way to extend the cable? Or an other same kind product with a bigger cable?

  A:

  The cable could theoretically be extended using a custom PCB adapter with a flex cable, but it would be limited in terms of the length because of the EMF.

  
  Justaviet · answered on October 30,2021

  sure you can find longer cables right here

  
  BG401516171 · answered on September 13,2021

  You can purchase these on this site, I believe they come in 3 different lengths

  
  BG810200227 · answered on January 14,2021

  Maybe you need an extender and a longer length FPC soft cable.

  
  wujiahui · answered on April 21,2019

  Thank you for your suggestion, if we can follow up, we will improve.

  
  wujiahui · answered on April 21,2019

  
  0
  

  Q:

  Is this camera module compatible with Arduino 2560 Mega R3?

  A:

  Very good

  
  Georgiafidelis · answered on April 05,2022

  Yes

  
  Ellaberin · answered on December 20,2021

  Yes,it’s compatible.

  
  BG435445144 · answered on August 16,2020

  Yeah,it is compatible with Arduino 2560 Mega R3.

  
  wujiahui · answered on September 02,2019

  
  0
  

  Q:

  I strictly follow the information in the video youtu.be/tzmcXZ-irIc but I always get the following errors:E][sccb.c:154] SCCB_Write(): SCCB_Write Failed addr:0x30, reg:0x35, data:0xda, ret:-1[E][sccb.c:154] SCCB_Write(): SCCB_Write Failed addr:0x30, reg:0xff, data:0x00, ret:263[E][sccb.c:154] SCCB_Write(): SCCB_Write Failed addr:0x30, reg:0x05, data:0x01, ret:-1[E][camera.c:1215] camera_init(): Failed to set frame size[E][camera.c:1270] esp_camera_init(): Camera init failed with error 0x20002I checked several times the connection of the camera to the ESP_CAM board: same results.On the other hand I can download and run simple program such as a web server or web client and use the wifi connection.Any idea ? DOA board / camera ?

  A:

  Dear, you can follow the tutorial below to check if there are any problems.
  github.com/donny681/ESP32_CAMERA_QR/wiki

  
  wujiahui · answered on June 11,2019

  Dear, you can follow the tutorial below to check if there are any problems.
  github.com/donny681/ESP32_CAMERA_QR/wiki

  
  wujiahui · answered on June 11,2019

  Dear, you can follow the tutorial below to check if there are any problems.

  github.com/donny681/ESP32_CAMERA_QR/wiki

  
  wujiahui · answered on June 11,2019

  Dear, you can follow the tutorial below to check if there are any problems.

  github.com/donny681/ESP32_CAMERA_QR/wiki

  
  wujiahui · answered on June 11,2019

  
  0
  

  Q:

  What is the pixel resolution wxh ?

  A:

  1080

  
  jonny786 · answered on November 22,2021

  2mp may be I think so

  
  BG107454159 · answered on November 16,2021

  The ov2640 sensor data says a bit over 1600 by 1200, but it usually is used to put out a 1600 by 1200 image.

  
  robothacker · answered on August 02,2020

  OV2640 2 million pixels

  
  wujiahui · answered on March 17,2019

  
  0
  

  Q:

  Need documentation for this board. It Is NOT an AI Thinker as shown in the pics.

  A:

  The settings I have in Arduino IDE is DOIT ESP32 DEVKIT V1 and it works flawlessly.

  
  Fabricole · answered on November 29,2021

  I ordered it yesterday I haven’t played with one yet.

  
  Kenubita · answered on November 28,2021

  Hi chagrin, the metal cage does not display the AI-Thinker emblem, but it does show the ESP-S model number, which is an AI-Thinker version of the ESP32, and seems to work with AI-Thinker sketches for me. What kind of issues are you running into?

  
  shmookey · answered on November 28,2021