Last month, we had the opportunity to setup an APM 2.6 for a candidate, i.e. this baby will be shipped away after field test. We received one of those revised board that has no onboard compass, where the compass can be placed away from power and motor sources as far as possible to avoid magnetic interference. On this build, we decided to keep it simple, mount the compass/gps on the side bay, as shown on the picture, and the “compassmot” result was at an acceptable range 24% on the first run, so we just left it since then. We average about 10 or more satellites, so we are getting good signal here.
We are pleased with how this external compass can significantly reduce magnetic interference; the loiter is good. We accepted the default PID values, with one exception, we adjusted the Loiter PID P to 0.5 (from 1.0) to reduce aggressiveness as recommended for this release. The build time was reduced by half.
APM 2.6. Filmed with APM gimbal Keychain Camera #16 Lens D and with the default PID, out of the box DJI motor and propellers.