Elenco Strobe Light and Sound User Manual

ARNING: Always check your wiring before

W

turnin g on a circuit . Never leave a circuit
unatte nded while the batteries are i nstalle d.
Never connect additional batteries or any other
power sources to your circuits.

Strobe Light & Sound

CAUTION: Persons wh o are extre mely

ensitive to flashing lights should exercise

s
caution when playing with this toy.

Model SCP-14

AUTION:High intensity light. Do not

C

look directly at the white LED (D6).

ARNING: SHOCK HAZARD -

W

ever connect Snap Circuits

N
to the electrical outlets in your

ome in any way!

h

®

Project 1 Strobe Light

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Placement

Level Numbers

Snap Circuits®uses electronic blocks that snap onto a base grid to build different
circuits. These blocks have different colors and numbers on them so that you can
easily identify them. Build the circuit shown by placing all the parts with a black 1 next
to them on the clear base grid first. Then, assemble parts marked with a 2. Connect
the white LED (D6) using the red & black jumper wires as shown, with red wire to “+”
side. Install three (3) “AA” batteries (not included) into the battery holder (B3).

Turn on the slide switch (S1). The white LED should be flashing. Move the lever on
the adjustable resistor (RV) to adjust the flash rate a little.

Note: In rare cases the circuit may not work at all settings of RV. If this happens,
move the RV lever to the side near the strobe IC (U23), and only move the RV lever
over a small range.

Project 2 Strobe Sound

Project 3

Strobe Light &

Sound

Combine projects 1 & 2 by stacking
the white LED (D6) and speaker
(SP2) together as shown. Remember
to connect the red wire to the “+” side
of the LED. This circuit is shown on
the box cover.

Project 5 Adjustable Light

Project 4

Suspended

Raindrops

Faucet

Use the circuit from project 1. Go to a
water faucet and adjust the faucet so
water is dripping at a steady rate.
Dim the room lights and hold the
white LED so it shines on the
dripping water. Try to set the lever on
the adjustable resistor (RV) so that
the dipping water drops appear
suspended in mid-air. You may need
to adjust the drip rate on the faucet to
make this work.

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Turn on the switch (S1)
and move the lever on the
adjustable resistor (RV)
to change the brightness
of the white LED (D6).

Replace the white LED (D6) with the speaker (SP2); the speaker doesn’t have a “+”
side, so the red wire can go to either side. Turn on the slide switch (S1). You hear a
clicking sound from the speaker. Move the lever on the adjustable resistor (RV) to
adjust the clicking rate a little.

If you have any problems, contact Elenco

Copyright © 2014 Elenco®Electronics, Inc. All Rights Reserved. ● 150 Carpenter Ave. ● Wheeling, IL 60090

[phone] Fax: [phone] ● e-mail: [e-mail] ● Website: www.elenco.com or www.snapcircuits.net

®

753163

Project 6 Buzz & Tone

Build the circuit, connecting the speaker (SP2) with the red & black jumper wires as shown.
Turn on the switch (S1) and adjust the tone of the sound using the adjustable resistor (RV).
Most of RV’s range will produce a buzzing sound, but part of it will produce an interesting
tone. Try to make music with it.

Project 7 Persistence of Vision

Use the circuit from project 6, but replace the speaker (SP2) with
the white LED (D6); connect the red wire to the “+” side of the
LED.

Turn on the switch (S1) and adjust the flash rate of the
LED using the adjustable resistor (RV). At some RV settings
the LED will appear to be on continuously.

Take the circuit into a dark room and wave the white LED
around with your hand. Try it with the lever on the adjustable
resistor at different settings. The light from the LED will appear
to separate into short segments or dashes of light.

“Persistence of Vision” works because
the light is changing faster than your
eyes can adjust. Your eyes continue
seeing what they have just seen.

In a movie theater, film frames are
flashed on the screen at a fast rate
(usually 24 per second). A timing
mechanism makes a light bulb flash just
as the center of the frame is passing in
front of it. Your eyes see this fast series
of flashes as a continuous movie.

Project 8

Strobe & Tone

Combine the projects 6 & 7 circuits
by stacking the white LED (D6) and
speaker (SP2) together as shown.
Remember to connect the red wire to
the “+” side of the LED.

Project 9 Light & Sound

Turn on the slide switch (S1). The white LED
should be flashing and you hear sound from the
speaker (SP2). Move the lever on the
adjustable resistor (RV) to adjust the flash rate
and sound.

Note: In rare cases the circuit may not work at
all settings of RV. If this happens, move the RV
lever to the side near the strobe IC (U23), and
only move the RV lever over a small range.

This circuit is not as loud or as
bright as project 3, but won’t drain
your batteries as fast.

Project 10 Fast Light & Sound

Use the circuit from project 9, but replace the 100kW resistor (R5) with a 3-snap wire.