Hardware Reference
In-Depth Information
To +V
There are many other circuits you'll learn in the projects
that follow, but these are the staples of all the projects in
this topic.
To ground
To Microcontroller
digital input
Specialty circuits and modules
You'll see a number of specialty circuits and modules
throughout this topic, like the Bluetooth Mate and the
XBee radios. These are devices that allow you to send
serial data wirelessly. You'll also build a few of your own
circuits for specific projects. All of the circuits will be
shown on a breadboard like these, but you can build them
any way you like. If you're familiar with working on printed
circuit boards and prefer to build your circuits that way,
feel free to do so.
X
!
You will encounter variations on many of the
modules and components used in this topic. For
example, the Arduino module has several variations, as
shown in Figure 1-8. The FTDI USB-to-Serial module used in
later chapters has at least three variations. Even the voltage
regulators used in this topic have variations. Be sure to
check the data sheet on whatever component or module
you're using, as your version may vary from what is shown
here.
Input voltage
To microcontroller
digital input
Figure 1-16
Digital input to a microcontroller.
Top
: breadboard view.
Bottom
: schematic view.
