• Bangle.on('pressure' causes several updates each second so it likely uses a lot more power.

    This is true, but it may not be as bad as you think especially in the ~10 second case - since the barometer takes 1 second to get started each time anyway.

  • Is there any (simple) way to measure power consumption?

    Somehow disconnecting internal battery and using only USB power would be ideal, but I don't think that is possible?

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