DJI_FC_SUBSCRIPTION_TOPIC_HARD_SYNC wrong heading

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  • LIPING.ZHOU

    DJI_FC_SUBSCRIPTION_TOPIC_HARD_SYN refers to hardware clock synchronization, not quaternions. DJI_FC_SUBSCRIPTION_TOPIC_QUATERNION is for quaternions. Could you please rephrase your question?

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  • Rinto

    My question is why sometimes the heading in this quaternion is indicating that the drone is exactly facing north, while in fact it is not.

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  • Rinto

    Any update? My message is waiting for approval but the hardsync data holds a quaternion.

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  • Dear Developer, Hello and thank you for reaching out to DJI Innovations. What firmware version is your drone using? We hope that our solution meets your needs satisfactorily. We appreciate your email and wish you a wonderful day! Best Regards, DJI Innovations SDK Technical Support Team
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  • Rinto

    We encountered this both on v10.01.08.01 as well as one version earlier (not sure which one that was).

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  • Dear Developer, Hello and thank you for reaching out to DJI Innovations. This TOPIC does not require a GPS environment and does not integrate GPS data; it mainly relies on the IMU. Are you experiencing inaccurate quaternion data? Could you please provide the PSDK debug logs and flight logs for us to review? We hope that our solution meets your needs satisfactorily. We appreciate your email and wish you a wonderful day! Best Regards, DJI Innovations SDK Technical Support Team
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  • Rinto

    I will extract PSDK debug logs next time I encounter this issue. Good to know that no GPS fusion is performed.

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  • Dear Developer, Hello and thank you for reaching out to DJI Innovations. OK, I'm always here to provide technical support whenever you need it. We hope that our solution meets your needs satisfactorily. We appreciate your email and wish you a wonderful day! Best Regards, DJI Innovations SDK Technical Support Team
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