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