potentiometer between pins 11 and 13 (Figure
G
). One of the wires will connect to the middle
pin (or “nose”) of the potentiometer. The other
wire can connect to either of the side pins (or
“cheeks”). Which of the cheeks you connect
simply affects the effect of turning the pot “up” or
“down” one way or the other.
The second potentiometer is connected
between pins 9 and 10 (Figure
H
).
The final potentiometer is the trickiest. You’ll
need to connect one cheek of the potentiometer
to pin 6, and the nose to pin 11 (Figure
I
).
Take a deep breath, because we’re done. Now
for the moment of truth!
5. PLUG IN AND PLAY!
Grab that cable that’s plugged into your amplifier
and put two gator clips on the connector plug:
one attached to the tip and one attached to
the sleeve of the connector (Figure
J
). The
connector shown here has a tip, ring, and sleeve
— the ring being the middle portion. (This allows
two channels — stereo — to be transmitted on
one cable, though our synth is as of yet mono).
Take the other end of the tip gator clip and
attach it to a wire going to pin 4 of your 4093. Take
the other end of the sleeve gator clip and attach it
to ground, or battery minus, also through a wire.
With the battery connected, turn up your amplifier
volume slowly.
You should hear tasty square waves turning
on and off at a steady rate that’s controllable by
potentiometer 1, the first one you hooked up.
NOTE: Our fourth (unused) NAND gate seemed
a little sad over there all by its lonesome, so we
turned it into an oscillator to add a rhythmic effect
to our already-impressive circuit! If you want to hear
the collection of pitches without this gating effect,
replace the connection at pin 11 going to the nose of
the third potentiometer with a connection to ground.
Now try twisting potentiometer 2 — depending
on which way you turn it, you should hear a
gradually upward or gradually downward gliding
pitch that periodically resets (i.e. jumps back
down/up) before starting its ascent/descent
again.Adjust it so that you get a relatively high
pitch (think “squealing” rather than “bellowing”).
Now head over to potentiometer 3 and
gradually start turning that one. You should hear
[drumroll please] — a series of pitches! One after
G
55
make.co
Dogbotic Labs, Maisy Byerly (maisybyerly.com)
G H I
J
M85_052-57_SS_BEx_Undertoner_F1.indd 55M85_052-57_SS_BEx_Undertoner_F1.indd 55 4/10/23 3:52 PM4/10/23 3:52 PM
..................Content has been hidden....................
You can't read the all page of ebook, please click here login for view all page.