i’m a little bit confused about how gps fix for loiter works:
most of the times i’m able to takeoff in loiter after around 5 minutes of wait.
I’ve seen that the copter waits for the gps hdop to be low enough (how much?)
today it was a little bit cloudly (really few clouds in the sky)
after 3 minutes i had 7 satellites but i wasn’t able to arm the copter in loiter
after 10 minutes with 8 satellites i was able to arm the copter.
after the flight i had to stop to replace the batteries and then the apm rebooted and the gps fix started from the beginning:
this time i had 0 satellites, even if i waited 10 minutes.
i resetted the board and the number of satellites moves between 4 and 0.
I really don’t know what to try to understand the problem.
I supposed that the radio and video antennas were causing some problems to the copter, so i rotated 90° the radio receiver antenna(2,4GHz) and i unplugged the video transmitter antenna (1,2GHz) apparentely without any effect
moreover my nexus 5 obtained 12 satellites after less than 30 seconds.
this is a picture of my setup, did i some errors in the setup?
note: my gps is ublox lea (i read on internet it is the best)