Progress: Control one camera from my Mac with following items, not yet deploy to the SBC yet:

- Shutter speed (with fixed values, not yet get from the Camera API)
- F Number (with fixed values, not yet get from the Camera API)
- ISO (with fixed values, not yet get from the Camera API)
- White Balance (with fixed values, not yet able to add in the UI)

- Trigger Shutter Release
- Trigger Half Shutter Button to lock everything
- Zoom In and Out (not yet show the zoom value after zoom)
- Set AF point by clicking on the LiveView screen
- Rotate the LiveView as well as fix the coordinate of focus (in case when the camera is rigged vertically or upside down)

https://github.com/liuaddie/vfx_cams/commit/fdf12d8d617b98a3c31306ee975335bea8b723cb

Some issues and details are still pending to implement for the controller part. But I am trying to ignore them first, and do a quick deployment to all SBCs to get an overview. So the SBCs should be able to auto sync the scripts after I updated the scripts, otherwise I have to do it one by one. The first method in my mind would be
- git pull
- install requirement
- run the controller script
every time when the SBC is started.