Free ｜ OpenMV4 Cam H7, a machine vision microcontroller board based on the STM32H7 processor

■ STM32H743VI Arm® Cortex®-M7 processor running at 480 MHz, with 1 MB RAM and 2 MB Flash, and all I/O pins output 3.3 V and are 5 V tolerant.

• Full-speed USB (12 Mbs) interface to user's computer

• microSD card slot with 100 Mbs read/write speeds

• SP bus operating at up to 100 Mbs allows users to easily transfer system image data to LCD expansion board, Wi-Fi expansion board or other microcontrollers

• I²C-bus, CAN-bus and asynchronous serial bus (Tx/Rx) for connection with other microcontrollers and sensors

• 1 12-bit ADC and 1 12-bit DAC

• 3 I/O pins for servo control

• Interrupts and PWM on all I/O pins (there are ten I/O pins on the board)

• 1 RGB LED and two high power 850 nm infrared LEDs

■ The detachable camera module system allows OpenMV Cam H7 to connect to different sensors:

• The OpenMV Cam H7 is equipped with an OV7725 image sensor, which can capture 640x480 8-bit grayscale images or 640x480 16-bit RGB565 images at 60 FPS when the resolution is higher than 320x240, and up to 120 FPS when the resolution is lower than 320x240. Most simple algorithms will run above 60 FPS. The image sensor has a 2.8 mm lens with a standard M12 lens mount.

■ LiPo battery connector is compatible with 3.7 V LiPo batteries

Frame Difference Processing, Color Tracking, Marker Tracking, Face Detection, Eye Tracking, People Detection, Optical Flow, QR Code Detection/Decoding, Data Matrix Detection/Decoding, Linear Barcode Decoding, AprilTag Tracking, Line Detection, Circle Detection, Rectangle Detection, Template Matching, Image Capture, Video Recording, TensorFlow Lite for Microcontroller Support

• OpenMV Cam H7 datesheet

• Seeed official website OpenMV Cam H7 technical information

• Digi-Key’s introduction to OpenMV Cam H7