Hardware Reference
In-Depth Information
Figure 1-12:
Soldering.
Cut four lengths of wire 20cm long and strip about 7mm of the insulation of each end. If
you are using stranded wire (that is, there isn't a single core inside the insulation, but lots of
fine strands), twist the strands together with your fingertips.
You can “tin” the wires with a soldering iron. This prevents metal whiskers sticking out that
can accidentally short, causing undesired connections. To tin wires, twist them together, then
run along with the metal from the insulation to the tip with a soldering iron on the top and
solder on the bottom. Try and get the speed right so just enough solder flows to bind all the
strands together.
TIP
Connect a Switch
Connect the switch to an input terminal (such as input 0) as shown in Figure 1-13. Start the
emulator up to show the state of the inputs. Press the button and check that the input is
registered. If nothing happens, check your wiring. Note that as pins 1-4 are wired in parallel
to the switches, the terminal and switch indicate together.
 
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