# GPS Error And Issues Setting Up Obstacle Avoidance

Source: https://forum.modalai.com/topic/953/gps-error-and-issues-setting-up-obstacle-avoidance
Category: Flight Core and Legacy VOXL (https://forum.modalai.com/category/9/flight-core-and-legacy-voxl)
Tags: voxl-flight
Posted: 2022-05-19 22:36:36 UTC by John Nomikos
Replies: 1 · Views: 566

## John Nomikos · 2022-05-19 22:36:36 UTC

When I set COM_OBS_AVOID to 1, the drone will immediately go into Not Ready mode. After doing some looking, I think it's because GPS shows as ERROR. I am not quite sure why the GPS has an error, but it's been like this for a couple of days, even before I tried to setup obstacle avoidance. The logs show a 'No known GPS device found' error which could be substantial:
![c65eb024-2e49-4077-bc58-2a721e259345-image.png](https://forum.modalai.com/assets/uploads/files/1652999577675-c65eb024-2e49-4077-bc58-2a721e259345-image.png) 

The GPS model is MATEKSYS M8Q-5883 GPS Module, and the light on it is solid red. Apparently a flashing blue light means it is 3D fixed, but I'm not sure if that means anything.

I am not sure if this is a hardware issue or if there is something specific I need to do to setup the GPS so that it is not in error state. When I bring the drone outside, it does show that it gets GPS connection, even though GPS is in error state.

Any suggestions?

## Reply by Chad Sweet (ModalAI staff) · 2022-05-25 16:30:20 UTC

Is that version of GPS module supported in the version of PX4 you are using? Is it wired properly to your flight controller as well?