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by Joe Pardue
Fritzing With the
Arduino — Part 2
Last month, I introduced Fritzing — a novice-friendly
hardware design package that we are using to design a
real time clock shield for an Arduino. We saw how we
can use Fritzing to design the prototype for it on a
breadboard. This month, we will see how to take that
breadboard prototype and generate a schematic design.
Then — still using Fritzing — we’ll convert it into a printed
circuit board (PCB) layout that we will have manufactured
for us by SparkFun’s BatchPCB service.
■ FIGURE 1. Real time clock on a breadboard.
■ FIGURE 2. Select “Schematic.”
To get things rolling, the breadboard illustration
from last month is shown in Figure 1. The next thing
you need to do is click on the Schematic button as
shown in Figure 2. You’ll see the schematic window
with the schematic version of the breadboard parts
scattered about as shown in Figure 3.
Now, let’s move the parts to the positions that
will facilitate adding the wires as shown in Figure 4.
Notice that as you move the parts around, tiny
lines stick to the parts and stretch or contract a bit like
a virtual rubberband. Those lines represent the part
connections that you made in the breadboard. Similar
to how you drew the wires on the breadboard, you
use your mouse to grab a part connection point and
stretch a line to the other end of the connection (refer
to Figure 5). You may want to play around with this a
bit, but keep in mind that your goal is not only to
connect the parts, but to generate a schematic image