zawy

Instructables

• 

  Helical Antenna (helix) for FM Radio

  28 13K
• 

  Pulsing LEDs to Activate CCO

  16 2.1K
• 

  LED Helmet for Dementia, Alzheimers?

  13 10.0K
• 

  Heliostat for Solar Heating

  82 17K
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  A Copper Straw for Coffee, Etc

  2 1.7K