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Replying to @cabe_bedlam

In essence this is what we need to do; the problem is, to have millis we’d need to let the CPU run, which uses 300µA. instead to stay low power, we’re having the RTC wake us every 125ms, but a centibeat is 864ms, so it doesn’t divide evenly (864/125 = an update every 6.912 ticks)

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