SHOWALL FUN PRANKS HIGH VOLTAGE LAZARUS-64 PHOTOGRAPHY SPY GADGETS VIDEO GAME
Figure 8 - A piezo buzzer or small speaker can be used for direct audio transfer
Figure 8 - A piezo buzzer or small speaker can be used for direct audio transfer

If you plan on making this project portable for use with a cell phone, then take the output from the second 555 timer oscillator (IC2) from pin 3 and ground out to either a piezo buzzer or small speaker. For an 8 ohm speaker, add a 100 ohm resistor in parallel. This will allow you to hold the device over the mouthpiece of your phone and blast spammers on your cell phone. Of course, the audio will not be nearly as loud as a direct connection to the phone line, but it will annoy them nonetheless!



Figure 9 - Adding the components and battery into a project box
Figure 9 - Adding the components and battery into a project box

Since the Spammer Jammer will run for a long time from a 9 volt battery, you can add the components, switch, variable, resistor, and battery into a small project box for completion. I made my unit with both the piezo buzzer and a jack to plug into the phone line so it could work on the home phone system as well as cell phone. You will also want to add a pushbutton switch between the battery and circuit so that it only sends out a tone when you press the button. It only takes a few seconds for the telemarketers to get the point, so you only need a momentary push button switch.

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