User Manual

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Build the circuit as shown; note that the 5-snap
wire is partialy covered by the NPN transistor
(Q2), and a 3-snap wire is partially covered by the
green LED (D2). Place one of the disco covers on
the disco motor (DM).
Turn on the slide switch (S1). A siren sounds, the
disco motor spins & lights, and the display on the
LED-MC (U29) displays “00”. Push and hold down
the press switch (S2) to spin the programmable
fan (M8); if you hold it down long enough then it
cycles through 6 messages.
Make the display on the LED-MC show “02” or
“03” by pressing the A button on the selector (S8)
to increase the ones digit on the display. Press the
B button on the selector. The LEDs (D1, D2, &
D10) will flash while the discplay on U29 displays
a random pattern; sometimes they will be rapidly
changing, and sometimes they will stop for a few
seconds.
Project 203 Finale
!
WARNING:
Moving parts.
Do not touch
the fan while it
is spinning.
This circuit uses all
the parts in your set.
Disco Cover
SUPPORT BAR