Hal Murray wrote:
Anyone else lose an 18x?
I lost one a while ago. Similar. It just stopped doing anything
useful.
Battery failure?
I don't think it has a battery inside. That seems like a poor design. Too
many reasonable use cases would include sitting in a drawer for extended
periods of time.
Providing an RTC has benefits, especially when considering week-rollover
issues, since when the receiver wakes up it has no idea of date at all,
pulling in the RTC time and date is a sufficient hint, and adjusting
with detailed info from the GPS is a trivial extention. Then adjusting
the RTC is not a hard thing to do every once in a while. The same
problem could also be solved using EEPROM space. A byte would suffice.
Many of the GPS OEM boards I have seen has support for RTC battery. Is
also used to keep CMOS for waypoints.
Cheers,
Magnus
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