> For the complete documentation index, see [llms.txt](https://docs.freeflysystems.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.freeflysystems.com/astro/maintenance/faq-and-troubleshooting.md).

# FAQ & Troubleshooting

## Known Issues and Solutions

| Issue                                                                                     | Solution                                                                                                                                                                    |
| ----------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Battery cells out of balance                                                              | Leave on the charger (under supervision) for about 8 hours                                                                                                                  |
| Cannot control gimbal                                                                     | [Update Astro and Herelink firmware](https://freefly.gitbook.io/astro-public/astro/maintenance-manual/software)                                                             |
| Astro drifts up/down while hovering                                                       | [Calibrate accelerometer](https://freefly.gitbook.io/astro-public/astro/maintenance-manual/calibration-and-tuning#sensor-calibration)                                       |
| Cannot record video using the Sony a7R-IV, or "unable to write to card, check card speed" | [Install a faster SD card into the camera](https://freefly.gitbook.io/astro-public/astro/payloads/astro-mapping-payload/operating-handbook/normal-operation#video-workflow) |
| Transfer mission from PC to Herelink                                                      | Upload to Astro using PC, download from Astro using Herelink                                                                                                                |
| Can't connect laptop version of AMC to Astro                                              | Change the [UDP settings](https://freefly.gitbook.io/astro-public/astro/ecosystem/components/pilot-handsets#hotspot)                                                        |
| Gimbal is limp with camera on                                                             | [Make sure that your Astro and Gimbal are on compatible firmware](broken://pages/pVipTw2ochvzRocZAv9l#gimbal-baud-rate)                                                     |

## FAQ

| Question                             | Answer                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| ------------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Is there a compatible LiDAR sensor?  | <p>Yes! Freefly offers the <a href="/pages/quk55UDfps092T68yOw5">Flux Lidar payload</a> for super fast in-field processing. </p><p></p><p>There are also several 3rd party LiDAR payloads are available using our Smart Dovetail quick release or an adaptor:</p><p>-Emesent Hovermap</p><p>-GreenValley International X3C</p><p>-YellowScan Mapper, Mapper +, and Ultra</p><p>-Phoenix LiDAR Recon-A and Recon-XT</p><p>-Inertial Labs RESEPI</p><p>-ROCK Robotic R3PRO</p> |
| Is there a thermal sensor for Astro? | Yes, see the [Thermal Pro Module](broken://pages/7doATTKPBSjCHLQ4GXSf) for the LR1 Payload and the [Wiris Pro Payload](broken://pages/SWbzoab49OlVarm4Mr1J)                                                                                                                                                                                                                                                                                                                  |

## Advanced Troubleshooting

For in-depth problem-solving, you can check our [Troubleshooting Tree](https://docs.google.com/spreadsheets/d/1DXkk0BmRx9qLbjpBt2KgKYFOQhEGUTcyyQB6rOmb4ac/edit#gid=528435697) or [Astro Support page](https://freeflysystems.com/support/astro-support) for solutions to specific questions or error codes.&#x20;

If you need more help or can't find what you're looking for, please [contact us](https://freeflysystems.com/contact)!


---

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