Hardware Reference
In-Depth Information
Controlling the DC motor using a shield
For this final example, let's graduate from a simple DC motor control circuit to a hardware
shield that can control one or two DC motors. For this example, you'll control two DC mo-
tors on a wheeled platform. There are several simple, two-wheeled robotic platforms; in
this example, you'll use one that is available from several online electronics stores as
shown in the following figure:
To make this wheeled robotic platform work, you need to control the two DC motors con-
nected directly to the two wheels. You'll want to control both the direction and the speed of
the two wheels to control the direction of the robot.
You'll do this with an Arduino shield designed for this purpose. There are several available;
the shield you'll use here is the one available on the Arduino website at
www.arduino.cc
.
The following figure shows the shield:
