My 555 Timer Book Home Page

Welcome to the official homepage for my bestselling* book, “The Ultimate Beginner’s Guide to the 555 Timer.”

Buy the 555 Timer book on Amazon!

Get ALL of Chapter 4 for FREE!

  • Buy the official parts kit from Jameco here.
    Save over 20% by buying the kit compared to all the components individually!
  • Click here for the complete parts list, or to purchase the items separately.


Project 5 parts list – Optional caps C4 and C5 are shown in the schematic and breadboard layouts, but not listed in the parts list. Both should be .01 uF


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