Manual

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H
ave you ever tried to steer a bicycle or a
motorcycle with just four fingers? This would be
dangerous on a real motorcycle but on electronic
v
ersion it is a lot of fun!
To do this project, connect the components
following the wiring sequence. Next grasp the metal
exposed ends of the two long wires (connected to
terminals 110 and 81) in between your index finger
and thumb of your left and right hands. Now vary
your grip/pressure and listen as the sound changes
in the speaker. Due to the grip you use the sound
changes.
You can create different sounds by controlling the
light that into the CdS cell. If you have a strong light
on the CdS cell you can control the entire operation
by putting more pressure on the wires within your
hands. Make a shadow over the CdS cell with your
hand and see what happens.
By holding the ends of the wires, you are making
yourself an extension of the circuit- thus a human
resistor. When you change your grip the resistance
changes in the projects current. The sound from the
circuit will make a real motorcycle noise and with
practice you can do it real well. By doing this you
can make the motorcycle idle as well as race.
E
xperiment with different values for the 0.1mF and
0.05mF capacitors, but make sure you don’t use
values above 10mF or you may damage the
transistor.
Notes:
EXPERIMENT #12: MOTORCYCLE MANIA
Wiring Sequence:
o 1-29
o 2-30
o 3-16-105-109
o 4-120
o 5-41-106
o 15-82
o 40-110-WIRE
o 42-119
o 81-WIRE
Schematic
WIRE
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