PROJECTS: GIGAN TIC BUBBLE GENERATOR
makeprojects.com/v/28
4d. Follow the schematic and
photos to plug the rest of the
onboard components into the
stripboard and connect them
together: the resistors, diodes,
and Darlington transistor.
Drill away the copper connections at all points marked
with an “X”, and between the
RBBB and I/O chip pin rows.
+–
12V
1N002*
+
Gearmotor
Fan
–
Speaker
5V
GND
D3
Servo
+–
D
4e. Drill holes in the sides of
the project box for connecting the off-board component
wires, battery power, and
Ethernet cable to the arcade
console (if using).
100Ω
C
B
1N004
TIP122
E
5V
GND
A5
A4
A3
A2
A1
A0
GND
AREF
GND
D13
D12
D11
D10
D9
RST
GND
5V
RX
TX
D2
D3
D4
5V
D5
D6
D7
D8
+–
100Ω
RBBB Arduino
(w/7805 voltage regulator)
OUT1
VS
ENA
GND
CSA
OUT2
IN1
IN2
VLS
ENB
OUT3
CSB
IN3
IN4
OUT4
L298N
Lower boundary switch
D13
4d
4f. Follow the schematic to
solder wire connections out to
all the off-board components,
and thread the wires through
the holes: gearmotor, servo-
motor, fan, speaker, boundary
switches, and 12V battery. Fan
1N002/number needed to reduce motor voltage
Upper boundary switch
D2 GND 5V
4g. (Opposite) Secure the
board inside the box using
zip ties, making sure that an
Ethernet cable can both plug
in and unplug from the RJ45
jack. Connect all the off-board
components to their leads.
4d
4h. (Opposite) If your
battery is small, you can
use hookup wire to connect
it to your board. With a larger
one (like a moped battery),
use a switched lamp cord,
screwing its wires to one side
of a 2× 2 terminal block on
the board. The other side
of the block should connect
to a standard 5mm barrel
connector for plugging into
the RBBB power jack.
Gearmotor 12V Battery Upper Limit Switch Lower Limit Switch
TIP122 xx Diodes H-bridge Diode TIP122 +12V RJ45 I/O expander RBBB (Arduino) X = Drill out 4d xxxxxxxxxxxxxxxx= Connect
= Connect
xxxx
x
x
x
x
xxxxx
xxx
H-bridge
Servo header
Ground
102 Make: makezine.com/28
