Dashcam not loading corrct date & time?

[Martin King 2Participant @martinking2]

Hi All,

My Roadhawk HD dash cam has not been setting the correct date and time for quite a while now.

Just got around to trying to sort it out!

Works OK and announces GPS lock whenever we go out, I have an external GPS antenna built in to the car.

Is there some sort of battery in the camera that may have died? If so can I fix it?

Cheers, Martin

[Martin King 2Participant @martinking2]

[Adrian R2Participant @adrianr2]

If by quite a while you mean since April 2019 then perhaps the GPS week number rollover may be to blame?

[Martin King 2Participant @martinking2]

Hi Adrian,

It could be that long.

What is this week number thing please?

Martin

[Adrian R2Participant @adrianr2]

Part of the GPS broadcast includes the week encoded in a 10 bit field (0-1023) which increments for around 20 years and then goes back to zero again. Older devices need a software patch from their makers to update so you will have to search and see if something exists for your device and how to apply it.

GPS Week Number (Wikipedia)

I have a TomTom that no longer predicts arrival time for this reason, unfortunately now unsupported by them so unfixable but still works otherwise.

[grammar edits]

Edited By Adrian R2 on 31/08/2022 15:39:07

[Martin King 2Participant @martinking2]

Hi Adrian,

Many thanks, will contact Roadhawk and see what gives, much obliged sir!

Martin

[Adrian R2Participant @adrianr2]

Bonne chance, there were specific fixes around the time but I would expect any more recent software update to do the trick. It should then be good until 2038.

Adrian

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