solar input power source: 100mA 7.2V vs 200mA 5V ?

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hi,
i want power arduino running low powered sensors(dht, etc) solar input power source.

what trade offs of using 100ma 7.2v vs 200ma 5v?
eg. http://sra-solder.com/product.php/7019/139/monocrystalline_solar_cell
http://sra-solder.com/product.php/7021/139/monocrystalline_solar_cell


i understand input range arduino 5-10v, using 7.2v on 5v mean? , having more current mean being able power more sensors?

thanks

which arduino using? if arduino uses 5v logic level (uno, mega 2560, leonardo, etc), 5v solar panel not able keep stable. lean toward 7.2v panel can power arduino through regulator. if need more current, add panel in parallel power more sensors.

if running 3.3v arduino(nano, due), should ok either panel; 5v panel's higher current allow more sensors, , 7.2v panel able run system in lower light.


Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > solar input power source: 100mA 7.2V vs 200mA 5V ?


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