BerryGPS-IMU with internal antenna

[thn_tpl]

Hello,

I recently installed a BerryGPS-IMU board on my Pi 4. Everything works great, gpsmon and cgps display serial port output without error.

I tested my setup out under a clear sky and I must have waited more than 15 minutes. There is no fix for the GPS. As I said, I use internal antenna, no external. Is this expected? How sensitive is the internal GPS?

Am I missing anything? The board was sitting out in the open air. Nothing to cover.

[richardp]

Hi, if you are outside with clear access to sky, it should work.

Is the switch on the side in the correct position?  it needs to be set to “int” for internal

[thn_tpl]

Yes it switched to INT as we received it.

[richardp]

Mmmm… Strange…

Can you please upload a photo of the BerryGPS-IMU board?  I want to make sure it isn’t missing any chips. I am only interested in the top section where the GPS unit is (Green chip)

[thn_tpl]

So after I got an external antenna and installed it, switched to EXT , the GPS is fixed with proper location. The accuracy rate is about +/- 10m (35′)

After that the GPS would locked with INT antenna as well later with the accuracy rate at about +/- 15m.

Is that the expected performance?

Thanks,

[Author]

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