How to Use a 555 Timer in Monostable Mode

It’s been about a year since my last tutorial. Over the last year I learned that teaching in the real world will take away time from teaching in the virtual world.

Many people have contacted me asking about a tutorial for the 555 timer in Monostable mode. The great thing about this mode is that you get to control how long the output on the 555 timer stays high after a triggering event on pin 2. It’s a simple way to to execute a real world “if – then” statement. During the video we’ll discuss the following schematic:

Monostable 555 Timer

For a pdf version of the above schematic, click here. Enjoy the video!


2 thoughts on “How to Use a 555 Timer in Monostable Mode”

  1. Awesome thanks a lot for your tutorials they’ve really helped me expand and brush up my aged electronic skills.

    I’ve always struggled to find a use for a monostable timer circuit, but I think I’ve finally found one. I’m thinking about using one for an automated pet food dispenser. If I get the time to actually build one I’ll send some pics.

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