Ultimate GPS V3 is losing config

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patrikwey
 
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Ultimate GPS V3 is losing config

Post by patrikwey »

Hi
I bought a couple of your “Adafruit Ultimate GPS Breakout - 66 channel w/10 Hz updates - Version 3
GPS” Modules. I was hoping it will be an easy way to add GPS to ore devices.
I included it in ore 3V3 MCU System and added a backup Battery and have written some code to control it. I set it up to work with 1Hz and only Provide Nema String as output.
Now after a wile of operation (between a couple of hours and a couple of days) the GPS module seams to lose his configuration! It starts to deliver additional information (the information’s are correct and ok but not like I made the config).
Because I could not figure out why this is the case I set up the exact copy of your data Logger tutorial and analyzed the data. => The data were as expected for standard mode.
Now I set the configuration in the example code to only provide the needed information’s. => The Module is only delivering the expected Information at start up. But after a couple of Hours the same effect appears as in my circuit the module starts to deliver Data in default mode!
I tried this with 3 different modules and different Power supply.
Is this a normal behavior? What can I do to store config permanently?
Thanks for Help

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adafruit_support_rick
 
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Re: Ultimate GPS V3 is losing config

Post by adafruit_support_rick »

Not normal. Can you try a different backup battery?

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patrikwey
 
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Re: Ultimate GPS V3 is losing config

Post by patrikwey »

Thanks for fast reply

I will try a different backup battery.

But from my point of view it makes not much of sense because it happens during normal operation on a laboratory power supply there is no voltage drop on VCC line.
And according to the datasheet the module can be driven without backup battery.

Does somebody have other ideas what happens?

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adafruit_support_rick
 
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Re: Ultimate GPS V3 is losing config

Post by adafruit_support_rick »

Are you sure there are no glitches on the bench supply? It must be losing power somehow to be resetting like that.

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