Getting started with an arduino, A. what you will need – Pololu Dual MC33926 User Manual
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3. Getting Started with an Arduino
As with virtually all other Arduino shields, connections between the Arduino and the motor driver are made via
extended stackable headers that must be soldered to the through-holes along the top and bottom edges of the
shield. This section explains how to use this motor driver as an Arduino shield to quickly and easily add control
of up to two DC motors to your Arduino project. For information on how to use this board as a general-purpose
motor driver controlled by something other than an Arduino, see
3.a. What You Will Need
The following tools and components are required for getting started using this motor driver as an Arduino shield:
• An Arduino. Using this product as an Arduino shield (rather than a general-purpose motor driver board)
requires an
This shield should work with all Arduinos and
Arduino clones that behave like a standard Arduino. You will also need a USB cable for connecting your
Arduino to a computer. We have specifically tested this shield (using our Arduino library) with:
◦
(both original and R3)
◦
◦
*
◦
◦ Arduino Duemilanove (both with ATmega168 and ATmega328P)
• A soldering iron and solder. The through-hole parts included with the shield must be soldered in before
you can plug the shield into an Arduino or before you can connect power and motors. An
will work, but you might consider investing in a
higher-performance, adjustable soldering iron if you will be doing a lot of work with electronics.
• A power supply. You will need a power supply, such as a battery pack, capable of delivering the current
your motors will draw. See the Power Connections and Considerations portion of
for more
information on selecting an appropriate power supply.
• One or two brushed DC motors. This shield is a dual motor driver, so it can independently control two
bidirectional brushed DC motors. See the Motor Connections and Considerations portion of
for
more information on selecting appropriate motors.
* Note for Due users: The voltage on the current sense pins will exceed the Due’s 3.3 V limit when the
current draw exceeds ~6 A. The CS circuit has a 1 kΩ resistor in series with the output, which offers
some protection to the analog input, and the driver has over-current protection that kicks in between
5 A and 8 A, so the risk to the Due is low, but if you really want to be safe, you can use a 3.3 V
zener diode to clamp the current sense output voltage to a maximum of ~3.3 V. Alternatively, you
can disconnect the shield’s current sense pins from the Due (and optionally reconnect them through a
voltage divider); see
for more information.
Pololu Dual MC33926 Motor Driver Shield User's Guide
© 2001–2013 Pololu Corporation
3. Getting Started with an Arduino
Page 6 of 24