I'm investigating a weather station / data-logging project using an

F84 or 508 plus RAM or EEPROM. The components and mechanics

aren't a problem, but looking at the cup anemometer prototype I wondered

if a second one could be used for turning a small motor to top up the

battery. Is this a viable method ?

 

How efficient is a motor when it's used as a generator or are the two

merely the same device ? Presumably to get the same drive V & I out

of a motor you would have to turn it at its (normally) driven speed and

lesser V & I would be had at lower speeds.

 

Usually I'd use an el cheapo solar cell but in this app there's the little

added challenge of perhaps using something else. Has anyone tried

this method of small battery charging ?

 

Jinx