Hello all, I'm hoping this is as simple as a flat battery. The RTC on my Adafruit Datalogger shield lost 15 minutes overnight. The shield is logging data from two thermocouple breakout boards saving the data to SD and sending it out over serial to the PC where the GoBetwino beta is logging the feed to a text file. If the Arduino is left unplugged for a day the RTC forgets the time and has to be reset. I left the datalogger running overnight as the experiment it is logging from needs to run for 30hrs and so this was a test to see if it performed. This morning it was still logging but the timestamps on the logs were 15 minutes slow.
Can anyone tell me what the cause might be & how to remedy it?