Elenco Circuit Maker Skill Builder 125 - Manual (Page 49)

Project #95 Fun with the Alarm IC
Project #96 Dancing
Motor
Project #97
Musical
Light
!
WARNING: Moving parts. Do not touch the fan
or motor during operation.
!
WARNING:
Moving parts. Do not
touch the fan or motor
during operation.
Photoresistors can be used to
control many devices such as
street lights, clock radio alarms,
night lights, etc.
-48-
Place the fan on the motor (M1) and turn on the slide switch (S1). The
lamp (L1) lights, the motor spins, and you hear a machine gun sound
(with very faint music in background). Thoroughly cover the
photoresistor (RP) with your hand and the sound becomes a siren.
After a while the sound will stop, hold down the press switch (S2) and
the sound resumes.
Place the fan on the motor (M1) and
turn on the slide switch (S1). A song
is heard and the fan spins unevenly.
The fan speed is being controlled by
the music IC (U1).
Now push the press switch (S2) to
control the motor directly, and the
motor spins much faster.
Use the circuit in Project #96.
Replace the motor (M1) with the
2.5V lamp (L1). Now the music IC
(U1) and press switch (S2)
control the lamp brightness.
CM-125_Manual_031514.qxp_CM-125_Manual_031514 4/2/14 12:20 PM Page 49