Elenco Upgrade Kit SC500 to SC750 - Manual (Page 12)

-11-
Shape to be drawn.
Use a SHARP No. 2 pencil, draw on
a hard surface, press hard and fill in
several times for best results.
Use the same circuit as project #516, but draw a new shape. A Kazoo
is a musical instrument that is like a one-note flute, and you change the
pitch (frequency) of the sound by moving a plunger up and down inside
a tube.
As before, take a pencil (No. 2 lead is best but other types will also
work), SHARPEN IT again, and fill in the shape you see below. For best
results, SHARPEN IT again, place a hard flat surface between this
page and the rest of this booklet while you are drawing. Press hard
(but don’t rip the paper). Fill in each several times to be sure you have
a thick, even layer of pencil lead, and try to avoid going out of the
boundaries. Where the shape is just a line, draw a thick line and go
over it several times. The black ink in this manual is an insulator just
like paper, so you have to write over it with your pencil.
Take one loose wire and touch it to the widest part of this shape, at the
upper left. Take the other loose wire and touch it just to the right of the
first wire. You should hear a high-pitch sound. How do you think the
sound will change as you slide the second wire to the right? Do it, slowly
sliding all the way around to the end. The sound changes from high
frequency to low frequency, just like a kazoo. Note: You may get better
electrical contact between the wires and the drawings if you wet the
wires with a few drops of water or saliva.
Shape to be drawn.
Use a SHARP No. 2 pencil, draw on
a hard surface, press hard and fill in
several times for best results.
1 2 3 4 5 6 7 8 9 10 11
Project #517 Electronic Kazoo
Project #518 Electronic Kazoo (II)
Use the same circuit as project #516, but fill in the new shape shown
here.
Take one loose jumper wire and touch it to the left circle. Take the other
loose wire and touch it to each of the other circles. The various circles
produce different pitches in the sound, like notes. Since the circles are
like keys on a piano, you now have an electronic keyboard! See what
kind of music you can play with it. Note: You may get better electrical
contact between the wires and the drawings if you wet the wires with a
few drops of water or saliva.
Now take one loose wire and touch it to the right circle (#11). Take the
other wire and touch it to the circles next to the numbers shown below,
in order:
7 - 5 - 1 - 5 - 7 - 7 - 7
5 - 5 - 5
7 - 7 - 7
7 - 5 - 1 - 5 - 7 - 7 - 7 - 7 - 5 - 5 - 7 - 5 - 1
Do you recognize this nursery rhyme? It is “Mary Had a Little Lamb”. By
now you see that you can draw any shape you like and make electronic
sounds with it. Experiment on your own as much as you like. Be sure
to wash your hands after this test.