NanoMind 110 quad indoor flight using EKF2 estimator
Usually EKF2 estimator is not recommended on micro-quads, as the magnetic sensor will be interfered by magnetic field generated by motors/large current in such a compact range, which may cause sever, radical yaw drifting.
However, using this tiny compass module, NanoMind can fly EKF2 estimator indoor with yaw locked-in.
This external compass weights only ~2.6g. It can also be easily stacked on other micro-quads built on MindRacer.