A newbie to arduino with some basics questions here. Hope you can help me and some day i can pay the favor back. Some context: I really would love to power up my projecto with a 9V/6V battery and have SLEEP and INT lowering my power needs. *1 - I have some difficulty understanding wich one of those two are the best option for lower my power consumption to the minimum: LowPower. h or ArduinoSleepCode. *2 - To power up Arduino. Does DC-DC buck and feeding on the +5V pin (not the Vin pin) payoff? or im just better feeding the battery on the Vin pin of my arduino (with a 6v battery) ? *3 - if i bypass the regularor i have to give the arduino always de 5V precisely, no more or less.. or my totally rong and it's the ripple that will burn my chip? *4 - does this all matter, or im better off focusing on disable the LED and pre-scale the clock down? Thx in advance for the help.
ps: hope i did pick the rigth sub-forum