On the car on prgm 3 is the line following program.
The car is sitting ready running program 1.

When the car receives mail message number 5 from the monorail it runs prgm 3 and follows the line.

When the car receives mail message 4 from the monorail it runs prgm 4 which starts the alarm - the lights turn on and rotate.

When the car receives mail message number 2 from the monorail it runs prgm 5 and the car followers the line but before the gate it turns around and comes back.

This is prgm 5 on the car.

 

Prgm 2 sends out mail message number 5
Prgm 4 sends out mail message number 4
Prgm 5 sends out mail message number 2

The RCX for the gate opens the gate when the car passes the light sensor and sends message13 to car to have it stop after 8 seconds.

 

View from CITY Web Camera http://legocamera.marshall.edu

LEGO Links of Linda Hamilton hamilton@marshall.edu
http://netapps.marshall.edu/lego
SENSORS CITY