Is there a way of connecting a digital transducer to RTKGPS facet via QWIIC or data input

Sensors Distance
1

Hi all

This is urgently needed for research.

Is a way to connect a digital transducer to Sparkfun RTK facet (GPS-19984) either through the QWIIC or DATA input?

Could this measurement automatically be added to the data then you simply add the pole length in SWMAPS? So you only have to adjust the pole distance.

This would be a massive upgrade for the product.

Also what low budget digital transducer would you suggest and can you provide a wiring diagram of the setup?

The Arduino or raspberry pi method is too complex for my programming skillset and prefer a plug and play method

Thanks

Chris Hopper

2

Since the RTK facet has a QWIIC connector, it should be possible. Anyway, I am sorry because I cannot provide any tutorial link.

3

It would be great if someone could tell me atleast a transducer or product to buy to tell water depth using the facet

4

It’s not possible unless you write your own custom firmware for the facet.

5

https://github.com/GLAY-AK2/NTRIP-client-for-Arduino

https://bluerobotics.com/learn/using-th … n-arduino/

Ive found these 2 pieces of info. How do I get the Facet linked with arduino an it all talking?

We have a good free NTRIP client in Australia

https://portal.ga.gov.au/persona/pa

6

Ive found these 2 pieces of info. How do I get the Facet linked with arduino an it all talking?

It’s like plugging a mouse into the USB socket in your car. The car doesn’t know what to do with a mouse so it just won’t do anything.

You would need to write your own custom firmware for the facet so that it would recognize the transducer and know how to handle the data it reports.

7

The project is progressing nicely

  1. I have the rtkgps transmitting to a raspberry through usb

NTRIP correction is done internally on the facet through cellular over wifi

I basically put the LAT, LONG, Ellipsoidal height for the GGA NMEA sentences

AUSgeoid09 will be applied to Ellipsoidal in QGIS in post.

-AHD71 is used is Australia for surveying and was set using MSL in like ?1968 its

-All previous lidar data uses AUSGeoid09 as the is variables of 10cm with AUSgeiod2020 in my location

  • AHD is currently 15cm below current MSL for my location

The next step is to fund the blue robotics ping2

  • Im thinking about put an line of code for the speed of sound through water for the PING2 using coppens equation

  • inputs would be water temp and salinity and depth just mean of 2

  • my surveying are between 0.5 and 5m depth and salinity will be the biggest variable between locations.