Help Please: Cable for trigger (without autopilot)

Hi andrew!
Thank for your reply

my fisrt concern is if I can trigger the camera via USB.directly from Reach M+?
If not, what kind of cable I need to trigger a Sony a7r iii, and get events via HSA?

Answering and giving you a scope of objetives

I got GPS/GNSS recivers for PPK
I plan to use a Reach RS as base for RTK,
(Alternatively, I can use a Reach m+ with RDF900 for long range corrections,
but that not be adressed at this step)
I don’t belive tat NTRIP could be a solution in an airplane, or in my area (NE of Argentina),

Te central idea is mount everithing in a plane (not a drone),
so there is no autopilot in the project.

I got a Reach M+.

The consecutive planning steps in my developement are:

  • wire everiting
  • test triggering from Reach M+
  • test events from HSA.
  • Integrate Hardware in a Pod appropiated for airplanes
  • Air test
  • Air test with RTK corrections
  • Software development of a tablet application with:
    • Logging data in the Reach M+ and RTK fix (if available)
    • get Location from Reach M+ (mock?)
    • Status of the location (FIxed or Autonomous for PPK)
    • Show pre loaded fligth plan to assist pilot
    • Show camera status (if I can wire via USB, but this is not mandatory)
    • Start and stop triggering based on location (triggering will be time based in te first developements)
      This is for avoid photos during turns
    • export logged data

In a second version of the app I wish to get IMU data from Reac M+, so the final output could be position and attitude of the camera in each photo event