Hi everyone! I need a little bit of advice...
I´m thinkingon building a really small DC-DC adapter from a lithium 7.4V battery down to 3.0V to power two small slave strobes (flashes) that I use frequently, so I can use one bigger battery (and replace only one battery - Sony´s NPF550) instead of everytime having to open each strobe and replace the 2 batteries inside needed for each.
But my two small units, when fully charged, they keep consuming 0.5W to keep the charge, even if I don´t fire the strobes. So when I forget the flashes turned on, in a couple of hours the batteries are depleted.
So I want to know if I could put an arduino in a sleep mode, for instance, when not using the strobes for, for instance, 5 minutes, and have it woken up by just approaching my hand on a TOF sensor, that would detect if my hand is close to the units (I´m using them) or not (my hand is far away)
The sensor is the VL53L0X, and has I2C pins (GND, VIN, SCL and SDA)
So, with arduino in a sleep mode, would the sensor still be operational? Could it by sensing movement wake arduino? Or it would also be shut down?
I have another simpler alternative that is, when detecting for instance, 5 mins. of no movement in fron of the sensor, arduino would switch of a transistor that would cut power to the strobes, without needing putting the MCU to sleep..
But I wanted to conserve energy to the max possible. Don´t know which alternative would be best. Don´t know if putting it to sleep would make so much of a difference.
By the way, I´m using this micro arduino version: SS Micro ATmega32u4
Thanks for reading!