Yes, it’s kinda janky however and only works for the OV7725 camera (the OpenMV Cam H7).
You need to connect the FSYNC input on the camera to a master clock source that runs at 60/120 Hz. The PLL inside the camera will sync up to that for frame output.
The clock should be like 60 Hz for VGA and 120 Hz for QVGA or less.
Does FSYNC also works for OpenMV Cam M7 which adopts the same OV7725 ?
I notice, from the Cam M7 schematic, the FSIN pin is pulled to GND thru a 10k resistor, while for Cam H7, there is no such design, is there any specific concern for Cam M7?