zawy

Instructables

• 

  Helical Antenna (helix) for FM Radio

  28 16K
• 

  Pulsing LEDs to Activate CCO

  16 2.3K
• 

  LED Helmet for Dementia, Alzheimers?

  13 10K
• 

  Heliostat for Solar Heating

  81 18K
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  A Copper Straw for Coffee, Etc

  2 1.8K