1.2 KiB
Notes on using gk7205v300 camera with imx335 sensor
In the main, working with the camera is no different from other gk cameras. Lite or fpv is flashed in the same way, or lite is updated to fpv. The presence and location of pins for USB and UART should be viewed on the seller's page. For example, the camera purchased at link has USB on the connector for the FPC cable and are named in the description WIFI_DP and WIFI_DN (USB DP/DN).
The nuances concern the resolution settings. The 1080p mode (setting size: 1920x1080 in majestic.yaml) produces 15 frames / second, which is of course unacceptable. It is necessary in the file /etc/sensors/imx335_i2c_4M.ini
comment out (via ;) the line clock=27MHz and set Isp_FrameRate=30, then reboot the camera. The corrected files are in the imx335_gk7205v300 directory.
The size: 2592x1520 mode also works and produces 20 fps, but the viewing angle of the picture does not change, which suggests interpolation. But it is not known from what resolution - to what. In fact, the delay in 1520p@20 is lower and is about 165 ms, in 1080p@30 - 185 ms.
Also needed is gkrcparams for smoother picture.