Project #3, Fun sounds rover – Elenco Deluxe Snap Rover&reg User Manual

Page 14

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Modify the Project #2 circuit by adding a the 100

μ

F capacitor (C4N) over

the 10K resistor (R4), using a 1-snap as shown. The circuit works the
same as before except that the space sounds sound a little different. Turn
knobs on U9 to change the sound.

Next replace the 10K resistor (R4) with either the 1K resistor (R2) or the
100K resistor (R5), and turn the knobs on U9 to see how the range of
sounds has been changed.

Now replace the 100

μ

F capacitor (C4N) with the 1

μ

F capacitor (C7), and

turn the knobs on U9 to see how the range of sounds has been changed.
Try different combinations of resistor and capacitor values.

Changing the resistor and capacitor values adjusts an electronic delay,
which changes the sound effects in an electrical signal controlling a
speaker (SP).

!

WARNING:

Moving parts. Keep face and eyes away from

the front of the disc launcher and from flying discs.

Project #3

OBJECTIVE: To make cute sounds.

Fun Sounds Rover

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VER REAR

Parts in the circuit:

Parts you can
replace them with:

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