Hardware Reference
In-Depth Information
Figure 8-5:
Circuit layout
using
through-hole
components.
A piece of strip board 0.8˝ long and 1.6˝ high will suice, although you can use a bigger size.
he dotted lines represent the copper strip on the other side of the board. You will not see
them; this is what engineers call hidden detail. here are no tracks to cut, so it is nice and
simple. Make sure that the LED is the right way around; note that all the legs are of diferent
length and that the longest one is the anode, as marked in Figure 8-5. Just to make sure, you
can test the LED with a multimeter set to resistance. Put the red lead of your meter on the
anode, and then by putting the black lead on each of the other legs in turn, you should see a
faint glow in the LED for each colour. Make sure that the leads of the LED are bent close to
the body so that they align with the hole spacing. hen push the LED down as close as you
can to the board, so the LED sits as low as possible. If you have a water-clear package, you can
improve the difusion by lightly sanding the LED with as ine a sandpaper as you can get.
his makes the resulting colours blend a lot better.
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