> For the complete documentation index, see [llms.txt](https://docs.gremsy.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.gremsy.com/gimbals-for-m300-m350/pixy-sm/mapping-mission-instruction/before-flight-checklist.md).

# Before Flight Checklist

* SD card check:
  * Camera SD card
  * Gimbal SD card
* Hotshoe connection: Hot Shoe plugged in tightly as picture below

![](https://3309772875-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FnikHUDUd2JXqkOsnOi7l%2Fuploads%2FCyDLM5wau3IEJDkfdhkh%2FScreen%20Shot%202022-08-19%20at%2016.58.17.png?alt=media\&token=446953cd-ed66-41b4-b73c-6ad3ac45c807)

* Check the PixySM payload on the M300 Remote:
  * Payload Status (1)
  * Hotshoe connected (2)
  * SD card connected (3)

![](https://3309772875-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FnikHUDUd2JXqkOsnOi7l%2Fuploads%2FjiJ44AZQbSxagagXIZcP%2FScreen%20Shot%202022-08-19%20at%2017.00.03.png?alt=media\&token=a13863bb-b8b8-42e9-9484-2b44b2fa5ed8)

* Check Map Route
* Start mission
* Power OFF M300
* Power OFF camera
* Post process flight data


---

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