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esp-who/examples/single_chip/camera_with_command_line
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XiaochaoGONG bf9fe9ea9c Init commit 2018-10-26 21:09:52 +08:00
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main Init commit 2018-10-26 21:09:52 +08:00
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README.md Init commit 2018-10-26 21:09:52 +08:00
partitions.csv Init commit 2018-10-26 21:09:52 +08:00
sdkconfig.defaults Init commit 2018-10-26 21:09:52 +08:00

README.md

Camera with Command Line in Single Chip

This example implements Human Face Detection with a single ESP32 chip and without LCD. ESP32 gets input of image from camera and displays results in the Command Line after recognition.

Preparation

To run this example, you need the following components:

  • ESP32 module: this example has been tested with ESP32-WROVER, which is highly recommended for getting started with.
  • Camera module: this example has been tested with OV2640 camera module which is highly recommended for getting started with.
  • Set up ESP-IDF
  • Set up ESP-WHO

Any other confusions about preparation, please see general guide in the README.md of ESP-WHO.

Quick Start

If preparations are ready, please follow this section to connect the camera to ESP32 module, flash application to ESP32, finally execute human face detection and display the result.

Connect

Specific pins used in this example to connect ESP32 module and camera module are listed in table below.

Interface Camera Pin Pin Mapping for ESP32-WROVER
SCCB Clock SIOC IO27
SCCB Data SIOD IO26
System Clock XCLK IO21
Vertical Sync VSYNC IO25
Horizontal Reference HREF IO23
Pixel Clock PCLK IO22
Pixel Data Bit 0 D2 IO4
Pixel Data Bit 1 D3 IO5
Pixel Data Bit 2 D4 IO18
Pixel Data Bit 3 D5 IO19
Pixel Data Bit 4 D6 IO36
Pixel Data Bit 5 D7 IO39
Pixel Data Bit 6 D8 IO34
Pixel Data Bit 7 D9 IO35
Camera Reset RESET IO2
Camera Power Down PWDN IO0
Power Supply 3.3V 3V3 3V3
Ground GND GND

In particular, if you have a ESP-WROVER-KIT, camera connector is already broken out and labeled Camera / JP4. Solder 2.54 mm / 0.1" double row, 18 pin socket in provided space and plug the camera module, OV2640 for example, right into it. Line up 3V3 and GND pins on camera module and on ESP-WROVER-KIT. D0 and D1 should be left unconnected outside the socket. The image below shows ESP-WROVER-KIT plugged with OV2640 camera module.

esp_wrover_kit_with_ov2640

Results

Open a serial terminal by using make monitor at this project, point the camera to a human face with a distance of 0.3m at least, then you will see the following information:

detected

The key word DETECTED comes out when a human face is detected.