Parallax S2 User guide

Propllr-powrd and
fully programmabl!
O p n - s o u r c  a n d
usr-hacabl!

4
toP VIew
lightsensors
penport
speaker
infraredemitters
infrareddetector
reset button
powerswitch
powerlight
programmingport(forserialcable)
bi-colorindicator
LEDlights

5
Bo t t o m VIew
penport
battery cover
tailwheel
line sensors
wheel
tire

15
The S2 has a stall sensor inside. If it gets stalled on an object it cannot see...
...it will back up, turn, and try driving forward again.

16
Stp
1
Demo 5: Line SenSo r
The S2 has two pairs of infrared emitters
and detectors on its underside. With them,
it can see a black line on white paper.
Print out a set of black lines from the “Tracks.
pdf” (Download ¿le from http://www.parallax.
com/go/S2). For a view of what the printed
tracks look like, see page 18 of this booklet.
Do not use photograph printing ink, which reÁects
infrared light!
Draw your own tracks by making a black line
¾ inch (2 cm) wide, on white paper. 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
Àr st .
5
button
prsss