Bonus Spinning Mirror Beeper - Elenco Electronics SC3DMEG Instruction Manual

These projects require additional Snap Circuits
that are not included in this set, but most can be built
if you also have Snap Circuits® 3D & Illumination
(model SC-3Di), or may be part of other Snap
Circuits sets you already have. They are provided
®
here as examples of what can be made by combining
Project B1
-93-
Bonus Projects
parts this set with others. If you experiment further on your
®
own then be sure to follow the guidelines in the DOs
and DON'Ts pages of your manuals (page 8 of this
manual). You may purchase additional Snap Circuits
parts at www.snapcircuits.net.

Bonus Spinning Mirror Beeper

THIS PROJECT REQUIRES PARTS FROM MODEL SC-3Di.
Build the circuit as shown, with the white LED (D6) mounted on two vertical snap
wires (V1), shining towards the phototransistor (Q4), which is also mounted on 2
vertical snap wires. Place the mounting base on the phototransistor. Place the
mirror (an illusion card will also work) in the illusion card holder and mount it on the
clear motor (M4). This project works best with new alkaline batteries.
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 horn is activated whenever
the mirror position allows light
from the white LED to shine onto
the phototransistor.
®