9
LEGO, the LEGO logo, MINDSTORMS and the MINDSTORMS logo are trademarks of/sont des marques de commerce de/son de marcas registradas
de LEGO Group. ©2010 The LEGO Group.
Charging and discharging with the
LEGO
®
MINDSTORMS
®
NXT
Charging the Energy Meter
Step 1
Make sure that you have the LEGO Converter
Cable, Power Functions Extension Wire, LEGO
transformer, Energy Meter and MINDSTORMS
NXT as shown.
Step 2
Connect the LEGO Converter Cable to Port A
of the MINDSTORMS NXT and then connect the
LEGO Converter Cable to the light grey end
of the Power Functions Extension Wire. Now,
connect the dark end of the Power Functions
Extension Wire to the input plug at the back
of the Energy Meter. Finally, connect the
MINDSTORMS NXT to a power source using
the LEGO transformer as shown.
Step 3
Build the following program in the
MINDSTORMS NXT Software:
• Configure a Move block for motor A with the
duration set to unlimited and power to 100
• Configure a Loop block to run forever
• Place a Keep Alive block inside the Loop
block so the MINDSTORMS NXT does not
power down during
charging
Step 4
The MINDSTORMS NXT must be on. Turn on the
MINDSTORMS NXT by pressing the orange On/
Enter button.
Step 5
Attach the MINDSTORMS NXT to a computer
using either a USB cable or Bluetooth
connection.
INFO
Remember that charging
and discharging the
Energy Meter must
always be done under
adult supervision.
TIP
Show the complete
palette to locate the
Keep Alive block.
Charging.and.discharging.with.the.LEGO
®
.MINDSTORMS
®
.NXT
TIP
When fully charged,
the MINDSTORMS NXT
can charge up to three
Energy Meters at the
same time.