Hello!
I was actually looking to accomplish something very similar but, with OEM cheap micro gimbals such as what you can usually buy off of AliExpress as a replacement for a DJI Mavic1 or 2, Mavic Mini or Mavic Air…
I was heavily involved with the development testing of project called OpenHD… One of the goals was to create an open source solution to have the same functionality and greater range on an open source platform using readily available components…
One of the biggest disadvantages of DIY drones is the extreme miniaturization and camera stability of consumer drones like DJI…
I spent a lot of time researching and tearing down some of the inner workings of DJI gimbals and, engaged on another simpleFOC thread below with regards to the integrated DUAL linear HALL sensors the gimbals have…
Because they have mechanical stops limiting the rotation to 45°-90° or so, it sounds like they use a RATIOMETRIC difference between two Hall sensors to determine angle…
Someone on this thread said that the setup should be fairly simple to implement and use…
The primary objective would be to retrofit something like a GoPro sensor or Raspberry pi MIPI CSI-2 image sensor utilizing the stock micro coaxial signal and power wires…
I have a ton of links pictures and information to anyone who might be interested…
*Unfortunately I don’t know how to program and still learning about simple FOC as well as the Storm32 open source gimbal project but, I’m really good with hardware and, thorough testing… 
I I would love to hear any thoughts or feedback related to this idea and application
Cheers…
https://community.simplefoc.com/t/extending-usability-to-3-hall-sensor-bldc-motors/25/35?u=htcohio
Also, Here is a YouTube video I put together of some of the components and, a video of another person in China who was able to get a mavic mini gimbal operational but without the integrated Hall sensors…
