Elenco Snap Circuits® Deluxe Sound & Light Combo - Manual (Page 53)

-52-
Project 57 Motor Strobe Effects
Project 58
Motor Strobe Effects (II)
Project 59
Motor Strobe Effects (III)
Tab
Slide tabs into slots.
Tab Tab
Place disc holder onto
the motor as shown.
Hold white LED (D6)
over disc as shown.
Use the preceding circuit, but replace the 100W resistor (R1) with the
5.1kW resistor (R3). The circuit works the same, but the LED flash rate is
slower, so the strobe effects are different. Adjust the setting on RV as
before, and watch the patterns on the spinning discs.
Use the preceding circuit, but replace the 5.1kW resistor (R3) with the
100kW resistor (R5). The circuit works the same, but the LED flash rate is
slower (now you can see the LED flashing), so the strobe effects are
different. Adjust the setting on RV as before, and watch the patterns on
the spinning discs.
This project is similar to project 47. Build the circuit as shown. Take one
of the colored discs and install it into the disc holder, then place the disc
holder on the motor (M1). Connect the white LED (D6) to the red &
black jumper wires.
For best effects, do this in a dimly lit room. Turn on the slide switch (S1).
Set the lever on the adjustable resistor (RV) down towards the 4-snap.
Hold the white LED upside down over the disc holder so it shines on
the spinning disc, and move the lever on the adjustable resistor (RV)
slowly while watching the pattern on the spinning disc.
The motor spins the disc so fast that it looks like a blur. However, as
you slowly adjust RV the pattern on the disc appears to slow down, stop,
and reverse direction. Patterns close to the disc center may be moving
at different speeds, or in different directions, from patterns farther from
the center!
Compare this circuit to the one in project 46. This project changes the
strobe effects by using RV to control the motor speed, while project 46
does it by using RV to control the LED flash rate. Getting the best strobe
effects by adjusting the motor speed is more difficult, because the motor
takes time to adjust its speed, while the LED flash rate adjusts instantly.
SCC-350_Manual_Part_A.qxp 7/25/14 2:40 PM Page 53