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GCS
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"Thanks Stijn for your answer.As the title of this topic indicates, I guess this will be improved in ArduCopter 3.4. Any body has more detail? "
"Stijn,
ArduCopter 3.3's EKF does not use GPS's altitude. It uses the barometer's altitude instead. Could you please tell more how the GPS's altitude is used?"
ArduCopter 3.3's EKF does not use GPS's altitude. It uses the barometer's altitude instead. Could you please tell more how the GPS's altitude is used?"
"These changes introduced a delay (negative or positive) between _last_GPRMC_ms and state.last_gps_time_ms. This delay depends on the baud rate, and also probable depends on the order of the messages."
"Hi Craig,
More tests shows that this regression appeared since this build :
http://firmware.diydrones.com/Copter/2015-07/2015-07-20-01:07/
This corresponds to the commit the same day:…"
More tests shows that this regression appeared since this build :
http://firmware.diydrones.com/Copter/2015-07/2015-07-20-01:07/
This corresponds to the commit the same day:…"
"When I flash it back to 3.2.1, the GPS works. MP shows "3D Fix" again."
"Yes, tried to set the GPS type to NMEA. But this does not help."
"It is not m8n. I use a Novatel module that outputs either NMEA or Novatel native messages."
"Since 3.3.1, it seems there is a regression with NMEA GPS support compared to 3.2.1. For example, these are NMEA messages refreshed at 4hz:…"
