28125 Parallax Inc, 28125 Datasheet - Page 300

• Manufacturer Part Number: 28125
• Description: TEXT ROBOTICS
• Manufacturer: Parallax Inc

Specifications of 28125

• Title: Robotics with the Boe-Bot
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Not applicable / Not applicable

You can adjust the set points and proportionality constants to change the shadow Boe-
Bot’s behavior. Use your hand or a piece of paper to lead the shadow Boe-Bot while
doing these exercises:
ACTIVITY #3: FOLLOWING A STRIPE
Figure 8-7 shows an example of a course you can build and program your Boe-Bot to
follow. Each stripe in this course is three long pieces of ¾ in (19 mm) vinyl electrical
tape placed edge to edge on white poster board. No paper should be visible between the
strips of electrical tape.
Building and Testing the Course
For successful navigation of this course, some testing and Boe-Bot adjustment will be
required.
√
√
9 V dc
B a t t ery
S out
S i n
A T N
V ss
P 0
P 1
P 2
P 3
P 4
P 5
P 6
P 7
w w w . st a mp si nc l a ss . c om
1
U 1
6- 9V D C
TM
V i n
V ss
R st
V dd
P 15
P 14
P 13
P 12
P 11
P 10
P 9
P 8
Try running FollowingBoeBot.bs2 using values of
ranging from 15 to 50. Note the difference in how responsive the Boe-Bot is
when following an object.
Try making adjustments to the value of the
0 to 4.
V ss
P 0
P 2
P 4
P 6
P 8
P 10
P 12
P 14
V dd
0 1 2
R eset
X 1
P w r
V ss
P 1
P 3
P 5
P 7
P 9
P 11
P 13
P 15
V i n
P 15
P 15
P 14
P 14
P 13
P 13
P 12
P 12
P 11
P 11
P 10
P 10
P 9
P 9
P 8
P 8
P 7
P 7
P 6
P 6
P 5
P 5
P 4
P 4
P 3
P 3
P 2
P 2
P 1
P 1
P 0
P 0
Start
X 3
X 3
X 2
X 2
B o a rd o f E d uc a t i o n
R ev C
V dd
V dd
+
15 1 4
X 4
V dd
V i n
V i n
© 2 000 - 2 003
13 1 2
X 5
V ss
V ss
R ed
B l ack
Finish
c
k
ed
l a
B
R
200
3
o
n
ss
ss
t i
V
V
2
0-
ca
X
5
1
200
u
1
3
d
dd
©
E
V i
n
V i
n
V
o f
X4
4
rd
5
1
C
a
d
d
1
ev
o
+
V
d
V
d
R
B
2
2
X3
X3
X
X
10
0
11
1
12
2
13
3
14
4
15
5
0
P0
1
P1
2
P2
3
P3
4
P4
5
P5
6
P6
7
P7
8
P8
9
P9
P1
P1
P1
P1
P1
P1
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
n
5
3
11
ss
r
V i
P
1
P
1
P
P
9
P
7
P
5
P
3
V
P
1
P
w
2
ese
t
1
X1
R
0
Vd
d
P1
4
P1
2
P1
0
P8
P6
P4
P2
P0
Vs
s
om
8
9
10
11
12
14
13
15
dd
st
i n
ss
TM
ss.
c
P
P
P
P
P
P
P
P
V
R
V
V
D
C
9V
a
6-
cl
i n
1
ps
U
am
t
1
w . s
w
TN
out
ry
d c
w
P
7
P
6
P
5
P
4
P
3
P
1
P
2
P
0
ss
A
i n
e
V
S
S
a t t
V
B
9
28” (71 cm)
SetPoint
constant. Try values from
Kpr
and
Figure 8-7
Stripe
Following
Course
Kpl
constants,