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Fritzing helps us see the connections
One of the main problems with photographs of
wired-up breadboards is that the wiring can be
incomprehensible and quite daunting to a novice. How
on earth can you figure out where all those wires go and
what is connected to what? One of the things that Fritzing
is good at is allowing you to highlight a set of common
connections on the board to help you see where things
For example, if you hover the cursor over the GND
header pin and press the left mouse button, you get all the
connections appearing in yellow as shown in Figure 3.
Now, you can clearly see that both the upper left and
upper right columns are connected to GND as is the
capacitor plugged into the left upper column, the piezo
speaker plugged into the right upper column, and the
breadboard battery plugged into the lower right column.
We can likewise see all the + 5 volt connections by
highlighting the 5V header as in Figure 4. This shows how
the two 10K ohm resistors, the left side of the pushbutton,
and the leftmost upper pin of the DS1307 are all
connected to +5V. I realize it is still a bit like trying to read
a message spelled out in a bowl of spaghetti, but
nonetheless it is better than a raw photograph (as you can
see by comparing these images to the photo in Figure 2,
which is actually quite clear compared to many you'll see).
■ FIGURE 3. Highlighting GND.
■ FIGURE 4. Highlighting +5V.
FRITZING MINI BREADBOARD —
When you open Fritzing, you'll see the full size
■ FIGURE 5. Select the mini breadboard.
breadboard in the breadboard view window. To change
the full-sized board to a mini breadboard, go to the Part
Inspector and select the size “mini” as shown in Figure 5.
December 2012 55