September 17, 2013

We can make the turnstile into an anemometer.

http://netapps.marshall.edu/lego/lessonplans/Turnstile/Turnstile.html

The pawl and ratchet makes the motion only one direction.


We are using a lot of gears.

How many people can go through for each position of the indicator?

Add wheels for cupping the wind

and blow.