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Trimble 4000SSE week rollover problem fixed ?

robots · 2020-10-31T17:23:00Z

Hello guys, I have noticed that this might be interested for you all (or some). I have bought cheap (<50EUR cheap) Trimble 4000SSE gps receiver. I have noticed that this receiver has been affected by the "recent" week rollover problem. That is because this equipment is very old and was made to survive only ONE week rollover. I am not surveyor. I bought the unit to examine it. Take it apart and look inside - porn :). I have been also taking apart the firmware of the unit. Looking specifically for OPTIONS and week number calculation. I have found both. And I was able to find and fix the week number calculation (by adding another 1024 to it). I also found a way to upload changed firmware to the unit. I would like to know if there is interest in this firmware? I would come up with some way to distribute it. I don't want to release it in the wild, I don't want my work to be "sold" by random people on fleabay for example.

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GNSS & Geodesy

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keelan

(@keelan)

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@robots Awesome, that means the WRNO bug can be fixed from the monitor without having to completely reload the firmware. Thanks for this.

Posted : November 13, 2020 12:57 pm

robots

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@keelan it could , but its easier for people to upload complete firmware. Less error prone.

Posted : November 13, 2020 12:59 pm

vick

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I 'm interested,

I may need your hand with that...?ÿ

Posted : March 24, 2021 5:10 pm

robots

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@vick https://github.com/robots/survey_gps/tree/master/trimble/gps_4000_4400_7400

Posted : March 25, 2021 2:31 pm

robots

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https://github.com/robots/survey_gps

Posted : May 2, 2021 4:19 am

satyr336

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@jim-frame

Have you already found the solution for the trimble 4000 rollover?

Posted : January 3, 2023 8:39 pm

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Trimble 4000SSE week rollover problem fixed ?

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