Vex Robotics 276-2271 Quick Start Manual

Power Accessories
Power Expander
Use the VEX Power Expander to add a secondary power source for four of the PWM outputs on the VEX
Microcontroller. Balance a robot's motor load across two batteries to extend robot run time and increase
performance.
The "In" and "Out" ports are labeled "A, B, C, D". Each "In" port is paired with an "Out" port. A motor or
servo connected to an "Out" port is controlled by the Microcontroller Motor Port connected to it's corresponding
"In" port. (i.e. "In" port A controls "Out" port A)
"Out" Ports
Usage
• Connect a secondary 7.2V battery to the power connector of the Power Expander. The Power Expander LED
should flash green briefly signaling power is being supplied to it.
• Connect up to four (4) Microcontroller Motor Ports to the "In" ports of the Power Expander using 3-Wire
Extension Cables.
•Connect Continuous Rotation Motors or Servos to the corresponding "Out" ports of the Power Expander.
• Slide the Power Expander PWM Lock to secure cables.
• Turn on your Microcontroller. The feedback LED should now show the status of the Power Expander and motors/
servos should respond normally based on the secondary battery power.
Limited 90-day Warranty
This product is warranted by VEX Robotics, Inc. against manufacturing defects in material and workmanship under normal use for ninety (90)
days from the date of purchase from authorized Innovation First dealers. For complete warranty details and exclusions, check with your dealer.
VEX Robotics, Inc.
1519 IH 30 W
Greenville, TX 75402
0412
Power Expander
"In" Ports
OUT IN
Status Ports
For More Information, and additional Parts & Pieces refer to:
www.VEXrobotics.com
PWM Lock
(slide)
Feedback LED
Power Expander • 1