SMILEY’S WORKSHOP ☺
circuit we were introduced to in the May ‘ 12 Workshop.
In this first installment, we will follow Figure 1 to build a
circuit on a breadboard that we can use with some
Arduino code, then we will convert the breadboard design
to a schematic. In Part 2, we will see how to use the
breadboard/schematic designs to generate a PCB layout
that we can use to have a circuit board fabricated.
Essentially, you’ll see the full hardware design cycle from
the breadboard prototype to the finished product.
What is Fritzing?
You can get the Fritzing application from
www.fritzing.org. They introduce themselves as follows:
Fritzing is an open source initiative to support
designers, artists, researchers, and hobbyists to work
creatively with interactive
electronics. We are creating a
software and website in the spirit of
processing and Arduino, developing
a tool that allows users to
document their prototypes, share
them with others, teach electronics
in a classroom, and to create a PCB
layout for professional
■ FIGURE 2. Security warning.
I downloaded the 0.74 b April
10, 2012 version and used it in the
illustrations here. It is 18. 6 MB
which isn’t terribly large nowadays,
but you’ll probably want a
broadband connection to
download it. Do note that Fritzing
is in beta release and this isn’t even
version 1.0 yet; since it is an open
source project, it might just stay in
beta for a while. The creators are
very aware that Fritzing is a work in
progress and you should expect
some problems, but remember the
price is free. If you like this tool
and want to see it improved, you
could send them a donation at
When you run the program,
the first thing you see (shown in
Figure 2) — as is so often the case
with Microsoft — is a completely
useless security warning that —
trust me — you can ignore.
After dismissing the stupid
security warning, notice the
Fritzing splash screen shown in
Figure 3. On the left, you see an
Arduino connected to a
■ FIGURE 3. Fritzing splash screen.
■ FIGURE 4. Fritzing breadboard view.
August 2012 53