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Category: audio
 Lie Detector
A simple and easy to make lie detector circuit. (August 3, 2009)
Categories: circuits audio diy science - Updated: 2009/08/03
 Audio Oscillator 2-Transistors
A simple direct-coupled oscillator with two transistors. (August 3, 2009)
Categories: circuits audio - Updated: 2009/08/03
 Reset a frozen iPod.
It happens sometimes. With no apparently reason the iPod freezes and needs to be reset. Here is how to do that. (July 30, 2009)
Categories: howto audio electronics - Updated: 2009/07/29
 How To Make a Speaker
A homemade speaker using a plastic cup, business card, wire, magnet and some Lego blocks. I built this speaker from scratch; I was surprised of the quality of the sound. Updated! (6/14/2007)
Categories: diy homemade science projects audio - Updated: 2009/07/25
 Soundmeter
A simple soundmeter using the PIC 16F628 or 16F84 (5/20/2006)
Categories: microcontroller circuits audio - Updated: 2009/07/24
 Hi-fidelity Homemade Loudspeaker.
From the Inventor of the Styrofoam Plate Speaker, here are the instructions to build the "Hi-Fidelity homemade styrofoam-plate speaker". (8/6/2007)
Categories: hacks science projects diy homemade audio howto - Updated: 2009/07/24
 NTX Gramophone / Vinyl Record Player
This is my second version of my homemade Gramophone/Phonograph using my LEGO Mindstorms NTX. (2/11/2007)
Categories: lego science projects homemade audio howto - Updated: 2009/07/23
 Mini Amplifier with LM386.
The LM386 is a low voltage audio power amplifier, simple and easy to build a mini amplifier with only a few components. (7/3/2006)
Categories: electronics circuits homemade audio - Updated: 2009/07/23
 Homemade Gramophone (Phonograph)
I'm ending the year listening old music from Vinyl disks, So I build my home-made gramophone using a pin and a plastic cup. With my lego set of "mindstorms" I was able to spin the disk at 33 RPM (approximately). Here are some photos an a video of my gramophone. (12/31/2006)
Categories: lego projects science diy homemade audio howto - Updated: 2009/07/23
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On this Category:
- Audio Oscillator 2-Transistors
- Homemade Gramophone (Phonograph)
- Hi-fidelity Homemade Loudspeaker.
- How To Make a Speaker
- Lie Detector
- Mini Amplifier with LM386.
- NTX Gramophone / Vinyl Record Player
- Reset a frozen iPod.
- Soundmeter
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