18
Make black lines on white paper as a track for the S2 to follow.
Print out a set of black lines from the “Tracks.
pdf” (Download file from http://www.parallax.
com/go/S2).
Do not use photograph printing ink, which reflects
infrared light!
Draw your own lines, ¾ inch (2 cm) wide.
To do this you will need:
• white paper
• a black marker
Always protect surfaces with paper or poster board when using a marker or any other
writing instrument in your S2. Be aware that some markers can bleed through paper and
stain the surface beneath, so test first.
Place the track on a hard
floor, and then place the S2
on the track.
Step
1
Demo 6:
Line FoLLowing Behavior
Step
2
6
button
presses