Hello paparazzi community, and happy new year!
I have been trying to get a satisfactory GPS reception with my STM32 based
autopilots, but without success. The two STM32 based boards I have, are a
Lisa/M v2.0 and one Elle0. In addition I have an old Twog (LPC2148) to compare
with. I have three different GPS's from different vendors, all Ublox5
or Ublox6. The one used most for testing is an Ublox5
receiver with Sarantel antenna (bought from PPZUAV).
I am not sure if the reception quality is influenced by me living 62 degrees north (Norway).
When I connect my GPS receivers to either the Twog or my PC, the fix happens very quickly, and I get approx 6m accuracy outdoors. And, most important, the results are consistent.
I connect the same GPS's to the STM32 boards, the reception is
noticeably worse, not consistent, and it may take several minutes to get a fix, even
I tried longer leads, up to 1m. Reception got
better, but by far not as good as with the Twog or a PC. Also I tried ferrite rings
with better, but not good results. Longer leads combined with ferrite
rings brought things close to ok. But then again my plane is small...