Hi folks,
I’ve been noticing that when using the Artemis Processor + MicroMod Data Logging Carrier Board (MMDLCB), the RTC does not keep its time when unplugged. To test this, I charged the battery for 24 hours and then unplugged power to the MMDLCB for two minutes. Even after this short time, the battery-backup seems to discharge to the point where it’s no long able to maintain the RTC.
I’m curious if anyone has any thoughts on what could be wrong. I did see there was another post about the RP2040 Processor and how its RTC_3V pin is tied directly to 3.3V. I wonder if this could be a related issue.
Cheers,
Adam
08:31:30.651 -> SparkFun RTC Example
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08:31:59.784 -> It is now 12:32:00.53 03/15/21 Day of week: 1 = Monday <- Unplugged power
08:34:01.698 -> SparkFun RTC Example <- Plugged power back
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