Manual

Use the project 92 circuit but
swap the locations of the white
LED (D6) and the horn (W1). Now
the horn sounds when you have
the mirrors aligned.
Use the project 92-93 circuits but
swap the locations of the color
LED (D8) and white LED (D6).
You may place the projector on
D8, or leave it out.
Use the projects 92-93 circuits but
move the end of the red jumper
wire from point A to point D on the
light tunnel (U30).
Project 93
Noisy Lights
& Mirrors
Project 94
Lights &
Blinkless
Mirrors
Project 95
Red Lights &
Mirrors
Use the projects 92-93 circuits but
move the end of the red jumper
wire from point A to point C on the
light tunnel (U30).
Project 96
Green Lights
& Mirrors
Use the projects 92-93 circuits but
move the end of the red jumper
wire from point A to point B on the
light tunnel (U30).
Project 97
Blue Lights
& Mirrors
Turn on the slide switch (S1); nothing
happens. Now push the press switch
(S2); the white LED (D6) lights.
You can replace the white LED with the
color LED (D8) or the horn (W1).
Project 98 Transistor Control
Electric current flows into the NPN
transistor (Q2) from the left (with R3)
and the top (D6), then all exits through
the bottom (with the 2-snap). The
current into the left side controls the
current into the top side, so D6 is only
on when S2 is pressed.
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