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16
Project 16
Busy Circuit
Place one of the disco covers on the
disco motor (DM) shaft. Note that
both sides of the support bar are “D-
t”. Turn on the slide switch (S1). An
alarm sounds, the disco motor spins &
lights, the LEDs (D1, D2, & D10) light,
and the programmable fan spins and
displays a message. Push the press
switch (S2) several times to display
different messages. Place the circuit in
a dimly lit room for best effects.
Variants:
1. Change the alarm sound by
connecting the red jumper wire
across points X & Y, or X & Z.
2. Make the disco cover spin faster
by shifting the 2-snap wire across
points A & B to points B & C or
points B & D. The blue, orange,
& black jumper wires must stay
connected to the 2-snap wire.
This circuit has a lot
going on.
Disco Cover
SUPPORT BAR
!
WARNING: Moving parts. Do not touch the fan or
motor during operation. Do not lean over the motor.
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