# Tag Info

4

@Kralc's answer is correct. However, besides device redundancy such setup is also used to achieve measurement redundancy. When the two gyros are mounted rotated (usually 90°) to each other, the flight controller is able to cancel out (to some extent) the effect of a noisy axis on one of the IMU's. In Cleanflight/Betaflight/Emuflight when dual gyro mode is ...

4

A major advantage is redundancy, so that the aircraft can continue flying if one fails. It is also common to see multiple GNSS (e.g. GPS) receivers, and sometimes even a redundant flight controller. Of course, the problem with only two is that the software can't necessarily tell which of them has failed; 'at least three' is common for high resilience ...

4

Some simple things to look for before we go deeper: Did you check that all four props are mounted correctly? (CW on top left + bottom right, CCW on top right + bottom left) With your props off(!), your drone connected to the Betaflight Configurator, and your control inputs neutral, are all three control axes all centered (at $1500$) in the Receiver pane?

3

Assuming it's not as simple as incorrect prop rotation, it could be that you have a mismatch between the FC orientation and the motor positions. Try holding the quad while it's running (with the props off) and tipping it in each direction. The lowest motor should speed up and the highest one slow down. Before you change anything, check whether the control ...

1

A large change in acceleration doesn't necessarily mean a big change in velocity. Since the chance in velocity is the integral of the acceleration, the velocity will barely change if the acceleration spikes quickly for example. Something that I don't quite understand is why the two graphs doesn't match. By definition, the acceleration should be negative when ...

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