October 18, 2005
Two groups of students built from the Cites and Transportation sets.
One group concentrated on building the speed trap, while the other group built the gate
Once the gate and speed trap were completed, the students programmed
the projects to complete certain tasks.
The gate was programmed to lift up for one second, wait 2 seconds, and go down for one second.
The speed trap would blink a green light if you went through slowly and a red light if you went too fast.
The students had a lot of fun testing the photo gates.
Thirteen students waited in line to test the speed trap.
Speed Trap and Gate
Speed trap program needed to be unlocked in File Vi Properties.
It also needed a little bit of time between the lights turning on and the light sensor icon for Wait For Darker.
The two lights that are on all the time need to be on port B.( Picture instructions look as if it should to Port A.)