Hi,
I am hardly trying to connect my VPX to the Grt sport EFIS . I Used serial ports from VPX ( J1-20 J1-22 ) connected to pin 33 and 37 of EFIS .
But I don't know where I Could connect J1-21 serial ground in the EFIS.
The main issue is I can't get the elevator and roll trim on my EFIS.
I got the 2 bars and a little triangle but the the triangle doesn't moves when I trim...
Thanks
I am hardly trying to connect my VPX to the Grt sport EFIS . I Used serial ports from VPX ( J1-20 J1-22 ) connected to pin 33 and 37 of EFIS .
But I don't know where I Could connect J1-21 serial ground in the EFIS.
The main issue is I can't get the elevator and roll trim on my EFIS.
I got the 2 bars and a little triangle but the the triangle doesn't moves when I trim...
Thanks