Pololu VNH5019, Руководство пользователя, Страница: 7 / 25

2. Motor and power connections: The six large holes/twelve small holes on the right side of the board,
highlighted in yellow in the above diagram, are the motor outputs and power inputs. You can optionally
solder the included 5mm-pitch terminal blocks to the board to enable temporary motor and motor power
connections, or you can break off an 12×1 section of the included 0.1″ header strip and solder it into
the smaller through-holes that border the six large motor and motor power pads. Note, however, that the
terminal blocks are only rated for 16 A, and each header pin pair is only rated for a combined 6 A, so for
higher-current applications, thick wires with
high-current connectors
[http://www.pololu.com/catalog/product/
925]
should be soldered directly to the board.
3. Arduino power jumper: If you want the option of powering your Arduino and motor shield from the
same source, you can solder a 2×1 piece of the included 0.1″ male header strip to the pins highlighted in
orange in the above picture. Shorting across these pins with the included shorting block will connect the
shield power to the Arduino’s VIN pin. You should
not use this to power the shield from the Arduino as
this connection is not designed to handle high currents, and you should never supply power to the Arduino’s
VIN pin or power jack while this shorting block is in place, because it will create as short between the shield
power supply and the Arduino power supply.
4. Additional power capacitor: The motor driver shield includes three pre-installed 47 uF electrolytic
power capacitors, and there is space—highlighted in blue in the above picture—to add an additional
capacitor (e.g. to compensate for long power wires or increase stability of the power supply). An additional
power capacitor is usually not necessary, and no additional capacitors are included with this shield.
The other through-holes on the shield are used for more advanced things like customizing the Arduino pin
mappings and are not necessary for getting started using this shield with an Arduino. They are discussed in more
detail later in this guide.
3.c. Shield Connections
Dual VNH5019 motor driver shield with an Arduino (shield and Arduino powered separately).
Pololu Dual VNH5019 Motor Driver Shield User's Guide © 2001–2011 Pololu Corporation
3. Getting Started with an Arduino Page 7 of 25