Board of education manual

Parallax, Inc. • BOE rev C (#28150) • Version 1.1 • 8/16/2004 Page 2
Board of Education – Top View (without Stamp module)
Reset
Board of Education
Pwr
9 Vdc
Battery
6-9VDC
Sout
Sin
ATN
Vss
P0
P1
P2
P3
P4
P5
P6
P7
P11
P9
P8
Vin
P10
P15
P14
P13
P12
Vdd
Rst
Vss
Black
Red
X4 X5
15 14 13 12
1
X1
Vss
P1
P3
P5
P7
P9
P11
P13
P15
Vin
Vss
P0
P2
P4
P6
P8
P10
P12
P14
Vdd
U1
TM
0 1 2
© 2000-2003
Vdd
P15
P14
P13
P12
P11
P10
P9
P8
P7
P6
P5
P4
P3
P2
P1
P0
X2
X3
Vdd
Vss
Vin
Rev C
www.parallax.com/sic
S
T
A
M
P
S
C
L
A
S
S
i
n
4” (101.6 mm)
3.7” (94 mm)
.125”
(3.18 mm)
3
.
0
5
”
(
7
7
.
4
7
m
m
)
2
.
7
5
”
(
6
9
.
8
5
m
m
)
Using the BOE Breadboard
The breadboard has many strips of copper which run underneath the board
in a horizontal fashion. These strips connect the sockets to each other. This
makes it easy to connect components together to build circuits.
To use the breadboard, the legs of components or wires are placed in the
sockets. The sockets are made so that they will hold the component in place.
Each hole is connected to one of the metal strips running underneath the
board. Each metal strip forms a node. A node is a point in a circuit where
two components are connected. Connections between different components
are formed by putting their legs in a common node. There are two columns
of 17 nodes on the breadboard. Each node contains five holes.
X3
Vdd
Vss
Vin
P15
P14
P13
P12
P11
P10
P9
P8
P7
P6
P5
P4
P3
P2
P1
P0
X2
For chips with many legs (ICs), place them in the middle of the board so that half of the legs are on the
left side and half are on the right side. Nodes on the left side are not connected to nodes on the right
side.
Example Circuit
On the left is a simple circuit used to monitor light levels. The illustration on the right shows how this
circuit can be constructed on the BOE breadboard.