# Ardusub 4.1.0 working with waterlinked uw gps?

**URL:** <https://discuss.bluerobotics.com/t/ardusub-4-1-0-working-with-waterlinked-uw-gps/13294>\
**Category:** ArduSub\
**Created:** [November 30, 2022, 1:34pm UTC](https://discuss.bluerobotics.com/t/ardusub-4-1-0-working-with-waterlinked-uw-gps/13294 "2022-11-30T13:34:13Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![Boko](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/boko/32/7241_2.png) [@Boko](https://discuss.bluerobotics.com/u/Boko)\
**Post date:** [December 16, 2022, 10:40am UTC](https://discuss.bluerobotics.com/t/ardusub-4-1-0-working-with-waterlinked-uw-gps/13294/5 "2022-12-16T10:40:45Z")

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Good working, thanks!  
I have a preliminary setup missing hardware.  
Is there a way to simulate depth and temp without BAR30 connected to Pixhawk?  
Manually trying to offset “ground press\*\*\*\*” is not allowed from QGC.

Log from BlueOS extension now:

```python
          starting
ensuring we get VFR_HUD at 5 Hz
getting http://host.docker.internal/mavlink2rest/mavlink/vehicles/1/components/1/messages/VFR_HUD/status/time/frequency
frequency for VFR_HUD is 2.4285714626312256
ensuring we get SCALED_PRESSURE2 at 1 Hz
getting http://host.docker.internal/mavlink2rest/mavlink/vehicles/1/components/1/messages/SCALED_PRESSURE2/status/time/frequency
frequency for SCALED_PRESSURE2 is 0
scanning for Water Linked underwater GPS...
Running
.
getting http://host.docker.internal/mavlink2rest/mavlink/vehicles/1/components/1/messages/VFR_HUD/message/alt
getting http://host.docker.internal/mavlink2rest/mavlink/vehicles/1/components/1/messages/SCALED_PRESSURE2/message/temperature
Error: could not convert string to float: b'None'

```

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