Elenco Snap Circuits Motion - Manual (Page 70)

Project 141
Short Burst Machine Gun
Set the adjustable resistor (RV2)
to the bottom position. Turn on the
slide switch (S1). A machine gun
sounds for a second, then stops.
Turn off the slide switch, wait a
few seconds, then turn it back on
to hear the machine gun sound
again. Try this several times.
Project 142
Short Burst
Sound &
Lights
Use the preceding circuit but
replace the 3-snap wire
between the alarm IC (U2) and
speaker (SP2) with the color
LED (D8, “+” on right) or the
red/yellow bicolor LED (D10, in
either orientation). The sound
will not be as loud now.
Project 143 Short-On Light
Set the adjustable resistor (RV2) to the bottom position, and set the
switcher (S6) to the middle position. Turn on the slide switch (S1). The
color LED (D8) should light for a short while then go out. To reset the
timer for the light to stay on, set S6 to the right position for a moment,
then back to the middle position.
Moving the lever on RV2 up makes the LED dimmer but it stays on
longer.
When you turn on the slide switch, the color
LED lights while the 100mF capacitor (C4)
charges up, then stops. Setting S6 to the right
position discharges C4.
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