D. programming your arduino – Pololu Dual VNH5019 User Manual
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Motor with one 0.1 uF capacitor
soldered across its terminals.
Motor with two 0.1 uF capacitors
soldered from its terminals to its
case.
1. Solder a
across the terminals of your motors, or solder one capacitor from each
terminal to the motor case (see the pictures to the right). For the greatest
noise suppression, you can use three capacitors per motor (one across the
terminals and one from each terminal to the case).
2. Make your motor leads as thick and as short as possible, and twist them
around each other. It is also beneficial to do this with your power supply
leads.
3. Route your motor and power leads away from your logic connections if
possible.
4. Place decoupling capacitors (also known as “bypass capacitors”)
across power and ground near any electronics you want to isolate from
noise. These can typically range from 10 uF to a few hundred uF.
3.d. Programming Your Arduino
Our Arduino library for the dual VNH5019 motor driver shield makes it easy
to get started writing your Arduino sketches. A link to download the library, installation instructions, and the library
command reference can be found on the
Once
installed, we recommend you try out the example sketch by selecting
File > Examples > DualVNH5019MotorShield > Demo
from the Arduino IDE, or by copying the following code into a new sketch:
#include "DualVNH5019MotorShield.h"
DualVNH5019MotorShield md;
void stopIfFault()
{
if (md.getM1Fault())
{
Serial.println("M1 fault");
while(1);
}
if (md.getM2Fault())
{
Serial.println("M2 fault");
while(1);
}
}
void setup()
{
Serial.begin(115200);
Serial.println("Dual VNH5019 Motor Shield");
md.init();
}
void loop()
{
for (int i = 0; i <= 400; i++)
{
md.setM1Speed(i);
stopIfFault();
if (i%200 == 100)
{
Serial.print("M1 current: ");
Serial.println(md.getM1CurrentMilliamps());
}
Pololu Dual VNH5019 Motor Driver Shield User’s Guide
© 2001–2014 Pololu Corporation
3. Getting Started with an Arduino
Page 13 of 28