# Mav\_cmd\_request\_message

**URL:** <https://discuss.px4.io/t/mav-cmd-request-message/25369>\
**Category:** QGroundControl\
**Created:** [December 7, 2021, 1:43pm UTC](https://discuss.px4.io/t/mav-cmd-request-message/25369 "2021-12-07T13:43:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![younus](https://discuss.px4.io/user_avatar/discuss.px4.io/younus/32/9541_2.png) [@younus](https://discuss.px4.io/u/younus)\
**Post date:** [December 7, 2021, 1:43pm UTC](https://discuss.px4.io/t/mav-cmd-request-message/25369/1 "2021-12-07T13:43:02Z")

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Hey there!

Im working on integrating a visual gimbal system using QGroundControl as a ground station and MAVLink-router as communication link and mavgen library for the gimbal manager with SYSTEM\_ID MAV\_COMP\_ID\_GIMBAL. Last but not least Pixhawk is being used as well. Communication is achieved and heartbeat is sent from QGC to gimbal manager and vice versa. According to Gimbal protocol, for the discovery of the gimbal manager, GGC should initially send MAV\_CMD\_REQUEST\_MESSAGE to the gimbal manager, but unfortunately it does not. I assume QGC detect the gimbal manager but it does not identify it as a gimbal manager. Is there a way to send MAV\_CMD\_REQUEST\_MESSAGE from QGC to the gimbal manager ?

Thanks for your time