Project #278, Sound mixer project #279, Sound mixer fan driver – Elenco Projects 102-305 User Manual
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Project #278
OBJECTIVE:
To connect two sound IC’s together.
In the circuit, the outputs from the alarm (U2) and music (U1) IC’s are
connected together. The sounds from both IC’s are played at the same
time.
Sound Mixer
Project #279
OBJECTIVE:
To connect two sound IC’s together to drive two
LED’s and a motor.
Build the circuit shown on the left. Place the fan onto the motor (M1).
In the circuit, the alarm IC (U2) and the music IC (U1) are connected
together. The sounds from both IC’s can be played at the same time.
Press the press switch (S2). The music IC plays and the green LED
(D2) lights. Now turn on the slide switch (S1) and press the press
switch again. You should hear the sounds from both IC’s playing. As
the alarm IC plays, it also drives the fan and the red LED (D1).
Sound Mixer Fan
Driver
!
WARNING:
Moving parts. Do not touch the fan or
motor during operation. Do not lean over the motor.