# How to load parameters

Source: https://forum.modalai.com/topic/2287/how-to-load-parameters
Category: Development Drones (https://forum.modalai.com/category/44/development-drones)
Tags: sentinel
Posted: 2023-06-20 13:02:43 UTC by Paul Carff
Replies: 11 · Views: 2210

## Paul Carff · 2023-06-20 13:02:43 UTC

I want to fly the sentinel indoors in my warehouse.  I figure I need to change some params in QGC, not sure how to do that using the GitLab data:
https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-px4-params/-/tree/master

Is there a procedure for house to use these param files?  **Will this over write only the params in the file?**
![Screenshot 2023-06-20 090559.png](https://forum.modalai.com/assets/uploads/files/1687266402480-screenshot-2023-06-20-090559.png)

## Reply by Eric Katzfey (ModalAI staff) · 2023-06-20 15:51:45 UTC

@Paul-Carff Yes, you would use the load from file option. Only the parameters in the file will be touched. All other parameters will remain the same. PX4 has defaults for all of the parameters built into the actual software image. When you start modifying parameters (changing them from their default values) PX4 will store those new values in the file `/data/px4/param/parameters`. So, for example, if you calibrate the magnetometer, the calibration parameters will be put into that file. You can always start from scratch by deleting that file and restarting PX4.

## Reply by Paul Carff · 2023-06-20 16:27:01 UTC

Thanks for the confirmation.

## Reply by Paul Carff · 2023-06-21 10:42:00 UTC

Where is the best place to learn about all of the parameters and their meaning/use?

## Reply by Eric Katzfey (ModalAI staff) · 2023-06-21 16:04:00 UTC (in reply to Paul Carff)

@Paul-Carff https://docs.px4.io/main/en/advanced_config/parameter_reference.html

## Reply by Paul Carff · 2023-06-21 16:39:43 UTC

@Eric-Katzfey Perfect - thank you

## Reply by Paul Carff · 2023-06-25 17:40:36 UTC (in reply to Paul Carff)

@Paul-Carff 
Which params v do I use :
![Screenshot 2023-06-25 at 1.39.40 PM.png](https://forum.modalai.com/assets/uploads/files/1687714812871-screenshot-2023-06-25-at-1.39.40-pm.png) 

Here is what I am currently running:
![Screenshot 2023-06-25 at 1.37.38 PM.png](https://forum.modalai.com/assets/uploads/files/1687714832159-screenshot-2023-06-25-at-1.37.38-pm.png)

## Reply by Eric Katzfey (ModalAI staff) · 2023-06-26 16:01:31 UTC (in reply to Paul Carff)

@Paul-Carff Use the v1.12 parameters

## Reply by Paul Carff · 2023-06-26 20:32:56 UTC

@Eric-Katzfey   Thank you.

## Reply by Paul Carff · 2023-08-11 12:35:47 UTC (in reply to Paul Carff)

@Paul-Carff I have upgraded to voxl2_sdk1.0.0 onto my Sentinel.

I believe this SDK uses px4 version is 1.14  Should I be using the v1.14 params now?

## Reply by Eric Katzfey (ModalAI staff) · 2023-08-11 14:24:23 UTC (in reply to Paul Carff)

@Paul-Carff Yep, use 1.14 parameters for SDK 1.0.0.

## Reply by Paul Carff · 2023-08-11 14:41:28 UTC (in reply to Eric Katzfey)

@Eric-Katzfey Thank you