Elastic Capacitor
Calibration Day at Miller Elementary
Pull back from here. Goes a bit longer.
How to go 90 cm is figured out.
Trying just a little shorter.
Mark off 30 cm, 60 cm,90cm. 
Pull back the arm.  Undo the latch.
Car moves forward.  Now work on finding position to mark for each distance.
 

Exact!

 

Three groups worked on the project.  It was not as easy as it sounds.
Marking near the end of the arm was better than close to the middle.

Using the RCX and angle sensor, the angles marked for the three distances can be data logged.  Then the conversions to distance can be shown on the graph.
eLab at Miller Elementary
with help from two Marshall IST students,
a parent, and Mrs. Hamilton

11 Dec MM
Linda Hamilton hamilton@marshall.edu
LEGO Links of Linda Hamilton http://netapps.marshall.edu/lego   2000-2001