Discussions

I recently flew a few autonomous missions with my hex (APM 2.6) and Droidplanner. The missions went great but the hex is flying low. I set the altitude to 5 meters and it looks like it was flying at about 2 meters high. Here is a graph of the sonar and barometer from the flight log. It looks like the sonar was accurate but the barometer is off? Sonar sensor is a MaxBotix 1240 (EZ4) with a cap/resistor power filter.

How do I get the barometer to read the correct altitude?

Does the sonar signal look OK? (Is the signal too noisy or is that what I should expect from the sonar)?

Thanks,
Greg