Metal Detector Homemade

Does anyone know how to make homemade inventions?
Like the metal detector made of an FM radio and a calculator. plzz. sweet.
hello I did one of this video at this website is http://www.wonderhowto.com/how-to/video/how-to-make-a-metal-detector-from-a-calculator-and-radio-237250 / explains everything you need hope to know this thanks hels
home made metal detector
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Treasure Hunter Metal Detector $89.95 Treasure Hunter Metal Detector |
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Homemade $17.5 Homemade |
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Homemade: $19.76 Homemade |
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Pioneer 202 Metal Detector $185.05 Bounty Hunter Pioneer 202 Metal Detector |
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Quick Silver Metal Detector $118.75 Bounty Hunter Quick Silver Metal Detector |
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Fast Tracker Metal Detector $101.04 Bounty Hunter Fast Tracker Metal Detector |
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Tracker II Metal Detector $101.04 Bounty Hunter Tracker II Metal Detector |
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Lone Star Metal Detector $179.95 Bounty Hunter Lone Star Metal Detector |
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Gold Digger Metal Detector $71.25 Bounty Hunter Gold Digger Metal Detector |
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HEADW Metal Detector Headphones $34.99 Bounty Hunter HEADW Metal Detector Headphones are small and lightweight and are designed for use with bounty hunter metal detectors. |
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Bounty Hunter Metal Detector Binaural Headphone HEADW $37.02 Bounty Hunter Metal Detector Binaural Headphone HEADW |
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Bounty Hunter Metal Detector Carrying Bag CBAGW $30.25 Bounty Hunter Metal Detector Carrying Bag CBAGW |
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Pioneer EX Metal Detector $138.94 Pioneer EX Metal Detector Pioneer EX Metal DetectorEasy to use4-Segment digital target identificationOne-touch depth controlFully automatic ground balancePush-button discriminationVisual status indicators3-Tone audio target identification |