PSRAM Camera Module with ESP32 WROVER (OV2640)

Description

M5Camera is a development board for image recognition. It features an ESP32(4M Flash + 520K RAM + 4M psram) chip and 2-Megapixel carmera(OV2640).M5Camera offers plenty of storage, with an extra 4 Mbyte PSRAM. It also supports image transmission via Wi-Fi and debuging through USB Type-C port.

The hardware comes preloaded software, programmed by ESP-IDF. It is an application to run Wi-Fi camera. The output image is size 600*800, since it's 2-Maga camera, you sure can optimize the software to output the maximum size of photos.

what this software can do?

• Power the board via USB type-C or GROVE
• Use your phone to Wi-Fi scan an AP name start with 'm5stack-' and click to connect this AP.
• Open up web browser on your phone and visit 192.168.4.1
• Then here comes the picture. Video is about 5-6 frames per senconds. not super fast.

The hardware also comes with some reserved weld pad, just in case you want put these chips back on board.

• 9-axis gyroscope (MPU6050)
• pressure sensor (BMP280)
• Analog MIC (SPQ2410)
• Battery socket

Please notice: There are 2 types of M5Camera

• Model A & Model B
• They have different circults, can be identified by backside sticker
• Model A is halt production. The new coming M5Camera is just Model B
• In Model A circult design MPU6050 and camera sensor have I2C conflict, which means you can't use both at the same time.
• Model B have better performance on image quality and processing speed.

Product Features

• ESP32 specifications
  • Dual-core Tensilica LX6 microprocessor
  • Up to 240MHz clock frequency
  • 4MB PSRAM
  • 4MB Flash memory
  • Integrated 802.11 BGN WiFi transceiver
  • Integrated dual-mode Bluetooth (classic and BLE)
  • Hardware accelerated encryption (AES, SHA2, ECC, RSA-4096)
• CP2104 USB-to-TTL converter
• OV2640 sensor
  • Output Formats(8-bit):
    • YUV(422/420)/YCbCr422
    • RGB565/555
    • 8-bit compressed data
    • 8-/10-bit Raw RGB data
  • Maximum Image Transfer Rate according to specific format
    • UXGA/SXGA: 15fps
    • SVGA: 30fps
    • CIF: 60fps
  • Scan Mode: Progressive
• Camera specifications
  • CCD size : 1/4 inch
  • Field of View : 65 degree
  • Maxmium Pixel: 2M
• Sensor best resolution: 1600 * 1200
• Dimension: 40 × 49 × 13mm

Kit includes

• 1x M5Camera
• 1x Type-C USB Cable

Documents

• Datasheet - ESP32 - OV2640

Learn

Preloaded Software

M5Camera(A model) Firmware: https://github.com/m5stack/m5stack-cam-psram/tree/master

M5Camera(B model) Firmware: https://github.com/m5stack/m5stack-cam-psram/tree/master

Example

• Color recognition

• Face recognition

More information

PinMap

There are two versions of M5Camera Unit: A Model and B Model.

Camera Interface PinMap

Interface Camera Pin M5Camera(A model) M5Camera(B model) SCCB Clock SIOC IO23 IO23 SCCB Data SIOD IO25 IO22 System Clock XCLK IO27 IO27 Vertical Sync VSYNC IO22 IO25 Horizontal Reference HREF IO26 IO26 Pixel Clock PCLK IO21 IO21 Pixel Data Bit 0 D2 IO32 IO32 Pixel Data Bit 1 D3 IO35 IO35 Pixel Data Bit 2 D4 IO34 IO34 Pixel Data Bit 3 D5 IO5 IO5 Pixel Data Bit 4 D6 IO39 IO39 Pixel Data Bit 5 D7 IO18 IO18 Pixel Data Bit 6 D8 IO36 IO36 Pixel Data Bit 7 D9 IO19 IO19 Camera Reset RESET IO15 IO15 Camera Power Down PWDN see Note 1 see Note 1 Power Supply 3.3V 3V3 3V3 3V3 Ground GND GND GND

GROVE Interface

Grove M5Camera(A model) M5Camera(B model) SCL IO13 IO13 SDA IO12 IO4 5V 5V 5V GND GND GND

LED Interface

LED M5Camera(A model) M5Camera(B model) LED_Pin IO14 IO14

The following tables are Reserved Chip Interfaces

BME280 Interface

It's IIC address is 0x76.

BME280 M5Camera(A model) M5Camera(B model) SCL IO23 IO23 SDA IO22 IO22

MPU6050 Interface

It's IIC address is 0x68.

MPU6050 M5Camera(A model) M5Camera(B model) SCL IO23 IO23 SDA IO22 IO22

MIC(SPM1423) Interface

MIC(SPM1423) M5Camera(A model) M5Camera(B model) SCL IO2 IO2 SDA IO4 IO4

NOTE:

1. We have several patterns of camera board, the following figures shows the main difference

   view click here.

   download click here.

   

Schematic

Power circuit

Chip peripheral circuit

USB to serial port part of the circuit