Bonus Spinning Mirror Beeper 90; Bonus Blinking Lamp - Elenco Electronics SC3DMEG Instruction Manual

Project B2
Project B3
Requires an NPN transistor (Q2), which is included in model SC-3Di
and others.
Turn on the slide switch (S1). The color LED (D8) and lamp (L4) are
blinking. If you remove the LED then the lamp will turn off.
Bonus Spinning Mirror Beeper 90°
Requires parts from model SC-3Di.
Modify the preceding circuit to be this one, which has the white LED (D6) and
phototransistor (Q4) at a 90 degree angle to each other. Place a mirror in the illusion card
holder and mount it on the clear motor (M4).
Turn on the slide switch (S1). The mirror should be spinning; if it is not, then give it a push
to get started. As the mirror spins the horn (W1) beeps and the blue LED (D9) lights. The
clear motor speeds up and slows down, controlled by the color LED (D8). If the sound is
always on, point the phototransistor away from room light.
The blink red LED cannot
control the lamp directly, but
it can using the transistor.

Bonus Blinking Lamp

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