User Manual

Build the circuit as shown, but note that two 2-snap wires are not
snapped at one end but are left to swing between connections. Touch
both of the loose 2-snaps to either the A or the B points on each side to
complete the circuit and light the red/yellow LED (D10). The LED will
be either red or yellow, depending on whether you touched it to the A or
B points.
Note that the 5-snap wire is
under the programmable fan
(M8), partially hidden. Push any
button on the selector (S8). The
programmable fan spins and
displays a message.
Use the preceding circuit but
reverse the programable fan
(M8). The circuit works the same,
except that the fan does not
display a message.
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Project 151 Word Fan PNP
Project 152
Fan PNP
PNP and NPN transistors are
similar, but current flows through
them in the opposite direction.
!
WARNING:
Moving parts. Do not
touch the fan while it
is spinning.
Project 153
Bi-Color Swing Circuit
The red/yellow LED has
separate red & yellow LEDs
connected in opposite
directions.