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Arduino compatible low consumption battery powered device with uSD slot and real time clock

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Event Logger

Energy efficient battery powered logger:

  • Built in Real Time Clock with 2032 backup
  • uSD card slot + power-off circuit
  • 18650 battery charge/protection module.

Measured power consumption:

  • 3.3 - 3.5mA in default MCU mode
  • 275uA in PWR_DOWN (including ~100uA for DS3231 RTC)

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Arduino compatible low consumption battery powered device with uSD slot and real time clock

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