Project 39 alarm sounds & lights, Project 40 softer alarms, Project 41 funky colors alarms – Elenco Snap Circuits Motion User Manual

Page 31

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Build the circuit and turn on the slide switch (S1). An alarm sounds and

a light comes on.
Add a connection between the points marked D & E using a 1-snap and

a 2-snap. Now it sounds like a machine gun.
Remove the connection between D & E, and add a connection between

B & D. Now it sounds like a fire engine.
Remove the connection between B & D, and add a connection between

B & F. Now it sounds like a European siren.
Remove the connections between B & F and C & D, and add a

connection between A & B. See what it sounds like now.

Project 39

Alarm Sounds & Lights

Modify the preceding

circuit to be this one. It

works the same way,

except that it isn’t as loud.

Try the same variants as

for the preceding circuit.

Project 40

Softer Alarms

Project 41

Funky Colors

Alarms

Use the preceding circuit, but replace

the red/yellow bicolor LED (D10) with

the color LED (D8, “+” on right). Try all

the same variants as for the preceding

two circuits. You should see some

interesting effects in the color LED’s

colors.

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