Elenco Computer Inteface for Snap Circuits&reg Manuel d'utilisateur

Copyright © 2014, 2004 by ELENCO®Electronics, Inc. All rights reserved. No part of this book shall be reproduced by REV-D Revise

The small slash “-” represents the trigger voltage, when the signalreaches this voltage level it activates the display. This makes iteasy to

-10-The 1:1 gain mode does not apply to the FFT screen, so move theY1 gain control down to here so you can see the peak energy atthe low frequencies.M

Now adjust the horizontal scale so the peaks line up with thegridlines as they did before.Notice that all the peaks went down in fre

-12-Build the circuit shown. If continuing from the previous experimentthen close the Winscope program and run it again, to reset thesettin

-13-What you see here is the effect of timing variations on the triggerused for synchronization. Turn off the trigger and you will see howmuch variati

-14-Project #PC3OBJECTIVE: To demonstrate wait mode with multiple colors.Hissing Foghorn PCBuild the circuit shown. If continuing from the previous e

Place Winscope in Wait mode by clicking on the button for it, thenslowly press the On-Line button several times. Now turn off theslide switch (s

-16-Project #PC4OBJECTIVE: To look at the output signal from a circuit that makes alarm sounds.Light & Sounds PCBuild the circuit and connect the

If continuing from the previous experiment then close the Winscopeprogram and run it again, to reset the settings. Then use the mouseto set it up as s

-18-Sample Frequency SpectrumModify the circuit for project PC4 by connecting points X and Y on thesnap diagram. Now the sound is a machine gun, it sh

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-19-Look at the waveform in oscilloscope mode using the samesettings as earlier in PC4. Replace the whistle chip with thespeaker a

-20-The waveform shown here is from humming into the microphone,notice how the tops of the pulses show a regular pattern of dipsnow.Look a

-21-You probably noticed that the width of the pulses in the pulsestream is constantly changing, that is because there is actually asecond

-22-Project #PC12OBJECTIVE: To look at the output signal from an AM radio.Build the circuit shown andconnect the PC-interfacecable to the microp

-23-If continuing from the previous experiment then close the Winscopeprogram and run it again, to reset the settings. Then use the mouseto set the

-24-Build the circuit shown and connect the PC-interface cable to themicrophone input on your computer. Project #PC13Space War PCOBJECTIVE: To look a

-25-Click on the FFT button to look at the frequency spectrum for thesesignals. For best viewing set the amplitude and time scales (reallyamplitude an

-26-If continuing from the previous experiment then close the Winscopeprogram and run it again, to reset the settings. Click on the On-Linebutton to a

mode) have nearly all of their energy at a specific frequency like forthe hum. “Square” or “rectangular” looking waveforms (like inProject PC

-28-Project #PC16Symphony of Sounds PCOBJECTIVE: To see the waveforms for a complex signal.The Symphony of Sounds project combines waveforms f

-2-Electronic engineers use specialized test equipment to “see”electronic signals and make performance measurements. Theyuse an oscilloscope

Project #PC17Doorbell PCOBJECTIVE: To look at the output of a musical circuit.-29-Build the circuit shown. If continuing from the previous experimen

-30-Project #PC18Periodic Sounds PCOBJECTIVE: To look at the output of an alternately changingcircuit.Build the circuit shown. If continuing from the

-31-Now change to FFT mode to look at the frequency spectrumscorresponding to the 2 waveforms above. Try the settings shownhere.SettingsThis

-32-Build the circuit shown. If continuing from the previous experimentthen close the Winscope program and run it again, to reset thesettin

-33-Project #PC20Space War Flicker PCOBJECTIVE: To continuously show the patterns created by thespace war IC.Click on the On-Line button to acti

-34-Project #PC21Buzzing in the Dark PCOBJECTIVE: To build a circuit that buzzes.Build the circuit shown. If continuing from the previous experimentt

-35-Turn on FFT mode to look at the frequency spectrum, try thesettings shown here. Now put the 0.02mF capacitor backin place of the 0.1

-36-Build the circuit shown. If continuing from the previous experimentthen close the Winscope program and run it again, to reset thesettin

-37-Build the circuit shown. If continuing from the previous experimentthen close the Winscope program and run it again, to reset thesettin

-38-Project #PC24High Pitch Bell PCOBJECTIVE: To build a high pitch bell.Build the circuit shown. If continuing from the previousexperiment

-3-You may freeze a waveform on the screen by clicking on theHold mode button (just to the right of the On-Line button).WARNING: Do not “

-39-Project #PC25Tone Generator PCOBJECTIVE: To build a high frequency oscillator.Build the circuit shown. If continuing from the previous experimen

-40-Project #PC28Old-Style Typewriter PCOBJECTIVE: To build a circuit that sounds like a typewriter.Build the circuit shown. If continuing from the p

-41-Project #PC29Transistor Fading Siren PCOBJECTIVE: To build a siren that slowly fades away.Build the circuit shown. If continuing from the previou

-42-Project #PC31Police Siren Amplifier PCOBJECTIVE: To show the output of an amplifier.You may also make different alarm sounds by connectin

Project #PC33Space War Amplifier PC-43-Build the circuit shown and use the same settings as in PC31 toview the waveform. Press the switch (S2) to cha

-44-Try these settings tosee the spectrum:Modify the circuit for project PC34 by placing the 0.02mF capacitor(C1) on top of the whistle chip (

Turn on the switch and adjust the variable capacitor (CV) for aradio station, then adjust the loudness using the adjustable resistor(RV). U

-46-Use Winscope to view the waveform and frequency spectrumwhen playing back your recording and music. A sample musicwaveform is sho

-47-This recorder IC circuit works the same as in project PC40 exceptthat the power amplifer IC (U4) used here makes the sound muchlouder than in p

-48-Project #PC43Oscillation Sounds PCOBJECTIVE: To view the output of an oscillator circuit.You may look at a pulse close-up by changing the time sc

-4-IMPORTANT NOTE: The designs for the microphone input portvary throughout the computer industry. Hence you may getwaveforms different fro

-49-Project #PC47Oscillator Sounds PCOBJECTIVE: To view the output of an oscillator circuit.Build the circuit and try the settings shown. SettingsPro

-50-Build the circuit and try the settings shown. You may try othersettings to zoom in or look at the frequency spectrum. SettingsProject #P

-51-Project #PC54Bird Sounds PC (II)Replace the 100mF capacitor (C4) with the 10mF capacitor (C3). Thefrequency of the oscillator is the sam

-52-Project #PC59Variable Oscillator PCOBJECTIVE: To view the output of an oscillator circuit.Build the circuit and try the settings shown. Move the

-53-Project #PC63Electronic Sound PCOBJECTIVE: To view the output of an oscillator circuit.Build the circuit and try the settings shown. Press the pr

-54-Project #PC65Siren PCOBJECTIVE: To view the output of a fading siren circuit.Build the circuit and try the settings shown. Flip on the slide swit

-55-Use the circuit from the Drawing Resistors project #516, butconnect the PC-interface cable across the speaker. Use a pencil todraw the sh

-56-Sample frequency spectrum:You can replace the 0.1mF capacitor C2 with the 10mF capacitorC3 (“+” on the right) to change the sound.Setting

-57-Build the circuit and press the press switch a few times, you hearcute sounds like a bumble bee. Use Winscope to see how thewaveform fa

-58--58-Build the circuit and try the settings shown. Turn it on, press thepress switch (S2) several times, and wave your hand over thephoto

-5-By using the microphone audio input and the flexible processingpower of the personal computer, we have created an inexpensiveand easy-to-use way

IMPORTANT NOTICEDisclaimer InformationOscilloscope for Windows95®or newer, version 2.51.OSCILLOSCOPE IS SUPPLIED TO YOU AS IS, AND INNO CASE IS T

-6-Project # Description Page # PC1 Pitch PC

-7-Project #PC1OBJECTIVE: To look at the output signal from a transistor oscillator while changing the pitch of the sound.Pitch PCYou will now be int

Note that your picture may not exactly match this picture due tovariances in the microphone input gain between computers, whichis beyond