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Disconnect the 9 V battery from the board, and do not put the AA batteries in their holder yet.
√
Build the servo ports shown by the schematic and wiring diagram below.
√
Double-check to mak e sure the black wire with th e white stripe is conn ected to Vbp , the solid
√
black wire is connected to Vss, and that all the connections for P13, Vbp, Vss, Vbp (another one),
and P12 all exactly match the wiring diagram.
Connect the servo plugs to the male headers on the right side of the wiring diagram.
√
Connect the 9 V battery, and insert the AA batteries into their holder.
√
Vbp
White
P13
Red
Black
Vss
Vbp
White
P12
Red
Black
Vss
Battery
(916) 624-8333
pack black
www.parallaxinc.com
wire with
www.stampsinclass.com
white stripe
= Vbp
Vdd
X3
P15
P14
P13
P12
P11
P10
P9
P8
Port connections
Copyright © Parallax Inc.
Vbp stands for Voltage battery pack.
It refers to the 6 VDC supplied by the four 1.5
batteries. This is brought directly to the breadboard to
power the servos for Boe-Bots built with the HomeWork
Board. Your BASIC Stam p is still powered by the 9 V
battery.
Battery pack
solid black
wire = ground
Rev B
Vin
Vss
P15
P14
P13
P13
Vbp
P12
Vss
P11
Vbp
P10
P12
P9
P8
Servo connections by wire color
Parallax Continuous Rotation Servo (#900-00008)
(916) 624-8333
Rev B
www.parallaxinc.com
www.stampsinclass.com
Vdd
Vin
Vss
X3
White
Red
Black
Red
White
HomeWork Board with
servo ports built on the
breadboard, with a separate
battery pack power supply
for the servos.
v2.2 10/24/2011 Page 3 of 8
V
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