assemble the seven different modules: two power
charging stations and five different vehicles.
The kit comes with a full time fueling station. The
transforming rechargeable station has two output plugs:
one for solar recharging and the other for battery
recharging. The battery charging station can bring the
selected unit to full power in about five seconds, and the
solar recharging station will fully recharge in approximately
120 seconds. Run time is approximately 50-80 seconds.
The 7-in-1 Solar Rechargeable Solar Transformers allows
the user to experience energy that can be recharged and
stored in a power source, and learn its principles and
knowledge through assembly. The suggested selling price
OWI, Inc., has also added a new Salt Water Fuel Cell Monster Truck
kit. Building on the success of OWI’s Salt Water Fuel Cell
Car, this second generation is bigger and badder. The Salt
Water Fuel Cell Monster Truck kit is equipped with four-wheel drive mechanical construction. It easily handles
different types of terrain by its twisted car body design. It
has two transformable engine blocks: V engine or flat
engine. The transparent case design allows children to see
the rhythm of the piston in a vertical or horizontal
position. Each monster wheel can change its angle
individually, and the truck can change its height and
shape. Forward and reverse are no problem; simply switch
the “positive and negative” connectors. The kit is fueled
by salt water. This Monster Truck gives children a chance
to learn about new forms of clean energy while building
and powering their own kit.
After activating the fuel cell module with a salt water
mixture, the magnesium metal sheet (three sheets
included) can operate the car for about five to seven hours
continuously. If you want to park the vehicle, simply take
out the fuel cell module, and rinse with tap water and dry.
All the materials used in this kit are environmentally
safe and clean. Non-toxic substances are used so there are
no disposal concerns. It will not produce heat, so it is safe
for child’s play. Dimensions of the assembled product are
3. 52” (H) x 3. 9”(W) x 4. 72”(L). The suggested selling price
is $25.95. For further information, please contact:
Li-ion Boe-Bot Power
Pack Charger The new Li-ion charger from Parallax makes it possible to no longer have to remove rechargeable AA cells and
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place them into a separate charging station, or to have to
replace non-rechargeable alkaline cells. Simply plug in a
7. 5 VDC 1A wall transformer, and the charging circuitry
does the rest automatically. This pack/charging solution
can replace up to several thousand AA alkaline batteries
over the Li-ion cells’ lifetime.
Two Li-ion 18650-size cells and a power supply are
required and are not included.
• Holds two rechargeable/replaceable 3. 7 volt Li-ion
• Provides up to six hours of continuous motorized
operation (depending on cell capacity).
• Rechargeable Li-ion cells don’t need to be removed
from your Boe-Bot for recharging — charging
circuitry is built into the board.
• Multiple LED indicators provide charge readiness
information for each individual cell; the status key
for the LED indicators is printed on the board.
• Aggressive holders retain cells in any board
orientation and in moderate shock environments
such as mobile robotic applications.
• Dedicated circuitry continuously monitors the
charging process to ensure safety, efficiency, and to
maximize the number of charge/discharge cycles of
Price is $44.99.
Dual Motor Driver MC33926
Also available from Parallax is the dual MC33926 motor driver carrier which is a breakout board
featuring two Freescale MC33926 H-bridge ICs. It can
supply up to almost 3A continuous current per channel to
two brushed DC motors at 5–28V, and it can tolerate
peak currents up to 5A per channel for a few seconds.
This makes it a useful general-purpose motor driver for
medium-sized DC motors and for differential-drive robots
that use such motors. The MC33926 supports ultrasonic
(up to 20 kHz) pulse width modulation (PWM) of the
motor output voltage which eliminates the audible