Elenco XP&trade - Manual (Page 13)

Note: This circuit requires program Electronic Brain
to be in microcontroller U21’s memory. This is loaded
into U21 at the Snap Circuits
® factory and should still
be there, unless you already reprogrammed it. If it has
been reprogrammed, you must use project B1 (on
page 29) to load program Electronic Brain back into
U21 before building this circuit.
Snap Circuits ® uses electronic blocks that snap onto
a clear plastic 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 above by placing all the parts
with a black 1 next to them on the board first. Then,
assemble parts marked with a 2. Then, assemble
parts marked with a 3. Install three (3) “AA” batteries
(not included) into the battery holder (B3) if you have
not done so already.
Turn on slide switch (S1) and wait for the red LED
(D1) to come on. Push the press switch (S2) and hold
it down until music starts. Set the lever on the
adjustable resistor (RV) for best sound. The motor
(M1) will spin while you push S2, and then will follow
the music as it plays. The red & green LEDs (D1 &
D2) will blink in time with the music. The fan blade is
not necessary and may be removed.
To change the song, push and release S2, then push
it again but hold it down until music starts. For more
songs, turn S1 off and on, slowly push and release
S2 four times, then push and hold down S2 until
music starts.
If you flip the motor around then the fan will rise into
the air like a flying saucer.
Project A3 Dancing Motor
Placement Level
Numbers
-12-
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!
WARNING: Moving parts.
Do not touch the fan or
motor during operation. Do
not lean over the motor.
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This complex circuit is pictured on the front
cover, use that as a guide to help build it.
The program in the microcontroller IC (U21)
controls power to the motor (M1), flashes the
LED (D2), and sends music to the speaker
(SP). The microcontroller is like an electronic
brain running the circuit.
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