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Project Notes

#677 Engineer’s Mini-Notebook 555 Timer IC Circuits

Book notes: Engineer’s Mini-Notebook 555 Timer IC Circuits, by Forrest M. Mims III. First published January 1, 1989.

Build

Notes

See also:

Contents

  • INTRODUCTION
  • CIRCUIT ASSEMBLY TIPS
  • 555 SPECIFICATIONS
  • 555 BLOCK DIAGRAM
  • CIRCUITS
    • BASIC MONOSTABLE
    • BASIC ASTABLE
    • BOUNCEFREE SWITCH
    • TOUCH ACTIVATED SWITCH
    • TIMER PLUS RELAY
    • CASCADED TIMER
    • INTERVALOMETER
    • MISSING PULSE DETECTOR
    • EVENT FAILURE ALARM
    • FREQUENCY DIVIDER
    • VOLTAGE-CONTROLLED OSCILLATOR
    • PULSE GENERATOR
    • FREQUENCY METER
    • AUDIO OSCILLATOR/METRONOME
    • TOY ORGAN
    • GATED OSCILLATOR
    • CHIRP GENERATOR
    • STEPPED-TONE GENERATOR
    • 3-STATE TONE GENERATOR
    • TONE BURST GENERATOR
    • SOUND EFFECTS GENERATOR
    • LED FLASHER
    • POWER FET LAMP DIMMER
    • LIGHT / DARK DETECTOR
    • INFRARED SECURITY ALARM
    • ANALOG LIGHTWAVE TRANSMITTER
    • ANALOG LIGHTWAVE RECEIVER
    • DC-DC CONVERTER
About LEAP#677 Books555 Timer

This page is a web-friendly rendering of my project notes shared in the LEAP GitHub repository.

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LEAP is my personal collection of electronics projects - usually involving an Arduino or other microprocessor in one way or another. Some are full-blown projects, while many are trivial breadboard experiments, intended to learn and explore something interesting.

Projects are often inspired by things found wild on the net, or ideas from the many great electronics podcasts and YouTube channels. Feel free to borrow liberally, and if you spot any issues do let me know or send a pull-request.

NOTE: For a while I included various scale modelling projects here too, but I've now split them off into a new repository: check out LittleModelArt if you are looking for these projects.

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