Wacky Sounds

Project Number: 92

OBJECTIVE: To combine different sounds.

Description: In the circuit, the outputs from the alarm and music ICs are connected together. Build the circuit shown and place the alarm IC (U2) directly over the music IC (U1), resting on two 1-snaps and a 2-snap. There is also a 2-snap on top of the alarm IC. Turn on the slide switch (S1) and you will hear a siren and music together while the lamp (L1) varies in brightness.