We try to minimize power consumption for a Autonomo board. I using sleep mode according with example from topic: Autonomo sleep current
I manage to reduce Arduino current in the sleep mode to 45 uA (it’s just Arduino board nothing else). That is good enough for us.
But in our project we need SDcard. So, if I just insert micro SD card in Arduino board, then the current increase to 530 uA in sleep mode.
So the question are:
How can I disable and then activate the SD card to reduce the power in standby mode for the Autonomo card?