I have completed my Arduino Nano v3.0 project on a breadboard and now I am ready to move to the project enclosure box... So the question is now - power supply... how?
I have read some posts on the net and it left me a bit confused. So far this is what I got:
1) 9V would not be ideal since the regulator would burn off energi (as heat) regulating the 9V source to 5V. - and therefore be inefficient.
2) According to the specs - the board cannot transform up from below 5V to 5V. So below 5V is not a solution.
3) If I use a 4x AA battery-pack (6V) it would be in the aboslute low end of what the regulator accepts (and since the battery power will drop when they are drained the regulator might fail).
My initial thought was to use the 4x AA battery pack - but now the internet has confused me. help! :)
The current I will drain would typically be around 2 leds + arduino + lcd with backlight so my guess is 40mA + 30mA + 40mA = 110mA. Weekends would be 200mA ;-)
(oh! please note that my main issue is that I don't know whats right and wrong here...)