Am I going in the right direction? Accurate GPS, using cell phone mock location

GPS/GNSS Development Boards
1

Basically I would like to build a unit that is basically like the RTK express, with out the RTK or like the Dual xgps150a.

I bought the Dual, just not what I want.

Here are my wants…

Rechargeable battery 5-6 hr runtime

1.5 m accuracy ( be consistent under 2m)

1Hz is fine.

Bluetooth connect to android/IOS to use mock location.

Keep program on the unit. Don’t want reprogram every time you use it.

Really just a cell phone gps booster that uses mock location( I know they exist but I want to build one)

Here is what I have gathered so far

Neo M9N with chip antenna break out board. Would I still get the accuracy or would I have to go with molex gnss antenna?

What’s the difference between mikroe gnss 7 click and the Neo m9n break out board?

Built on the ESP32 WROOM usb C. Is there a better option?

Am I going in the right direction? Or has someone done this already? Kit?

Thanks for the help

EZ

2

So you want an accurate GPS that outputs a fake location?

3

No, I want it for golf. A number of golf apps use cell phone gps for measurement. If the gps could give reliable location. 1-2m,

I could get rid of my laser range finder. Most golf apps have the ability to track shots, even putting distances. If the gps is wondering, you will not get good statistics. 1m would be pretty darn good, 2m would be sufficient.

Thx for the reply.

4

Neo M9N with chip antenna break out board. Would I still get the accuracy or would I have to go with molex gnss antenna?

An external antenna will give you more accurate results. I'd go with the SMA version along with this antenna:

https://www.sparkfun.com/products/15192

What’s the difference between mikroe gnss 7 click and the Neo m9n break out board?

Same gps module but put on a different manufacturers board.

Built on the ESP32 WROOM usb C. Is there a better option?

That should do the job and it has a qwiic connector making it easy to connect the GPS. Keep in mind you will need to write a small program to read data from the GPS and spit it out over bluetooth.
5

Thanks for the reply. Helps me out, I’m understanding the products more. I’m thinking of taking a coding class to further learning all this stuff.

I did forget to mention that it’s meant to be a wearable. Therefore I was leaning towards the flat Molex Flexible GNSS Antenna - U.FL. Ideally mount the boards under the brim of a hat, 3D print an open air mount, Mount the flat antenna on the top.

Thx again

6

Have you considered simply purchasing any one of a number of small GPS receivers that are designed to provide higher accuracy GPS/GNSS locations to phones and tablets?

Eg perhaps the Bad Elf Surveyor? You could attach it to your hat. It sends location data to your phone’s OS via bluetooth. The OS provides that improved location data to all the apps running on your phone.

Thought the new phones are pretty accurate these days.

EDIT: Oh, just saw that you want to build your own. Sounds like a fun project!

7

Bad Elf, That’s exactly what I want, BUT not for $650.

8

I ended up buying the Neo m9n u.fl and the Esp32 wroom usb-c.

I did get the Neo m9n to work directly thru my usb-c cable with u-center and u-blox. Hooked usb directly to Neo m9n. And I got NMEA data, sat info, etc.

I followed the hook up guide using qwiic connector to connect to the Esp32 wroom to the Neo m9n and it wouldn’t work. Are there tutorials on how to interface these two items and eventually get the Neo m9n data to get to my android phone via blue tooth and replace my cell phone gps with Neo m9n data using mock location?

Thanks EZ