Closed dbrgn closed 4 years ago
Should we use the low power mode when measuring?
It doesn't really matter, since we only measure once every 15 minutes. It's much more important that we put it to sleep afterwards.
It does matter, given that we do 35'040 measurements a year :slightly_smiling_face:
It does matter, given that we do 35'040 measurements a year slightly_smiling_face
And we also do 35'040 LoRa transmissions which dwarf the SHTC3 power usage by orders of magnitude :wink: But if we'd do more measurements and only transmit significant changes, it would start to matter :slightly_smiling_face:
Ok, I think you're right, assuming my calculation is correct :slightly_smiling_face:
>>> uJ = (8.4-0.34)
>>> J_per_year = uJ * 35040 / 1000 / 1000
>>> V = 3.3
>>> mAh_per_year = J_per_year / (V * 3.6)
>>> mAh_per_year
0.023772929292929297
Low power measurements seem to have an offset. Let's just stick to the regular measurements.
Should we use the low power mode when measuring?
Since the temperature / humidity inside the enclosure are just "metadata", I'd say that yes, we should use the low power mode for all measurements.