Let me quote Wikipedia ("555 timer IC," Wikipedia: The Free Encyclopedia, June 21st, 2015)The 555 timer IC is an integrated circuit (chip) used in a variety of timer, pulse generation, and oscillator applications. The 555 can be used to provide time delays, as an oscillator, and as a flip-flop eleme...
By: Dr_L
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from Instructables: exploring - technology - robots http://ift.tt/1I86JiM



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