Heather,

One thing for your team to lookout for is battry charge.  When the battery 
charge lowers, it may take more time (seconds) to travel the same amount of 
distance as it did when the battery was fully charged. (see Curt's handrill 
analogy in a recent email).

Our team generally uses degrees (1/360 of the circumference of the wheels 
you are using).  Degrees, as well as other sensors, can be easily measured 
using the "View" function on the NXT.

Lloyd


----- Original Message ----- 
From: "Heather Houlden" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, October 08, 2010 10:05 PM
Subject: Re: [VADCFLL-L] using sensors


> It is my first year as well, so we are learning too. However, my kids are
> measuring the distances the robot needs to travel.
> We programmed the robot to travel in a straight line for a set time (I
> think it was 10 sec). Then they measured the distance travelled, and I
> had them compute the seconds per inch travelled.
>
> Then they just multiply the seconds/inch by the number of inches the
> robot needs to move, so that they can program the number of seconds
> to move.
> So far it seems to be working OK for them. There may be an easier way
> to do it, but this is what they came up with.
> Hope this helps!
> Heather
> Team Blockbusters
>
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