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How to build a coin tosser

How to build a coin tosser

I was sitting in a brightly lit room in New York.

People were looking over at me, trying to figure out what I was doing.

In front of me on the table, I had a breadboard and a bunch of components.

My goal was to build a coin tosser, without making it too complicated.

First, I connected a 555 timer circuit to oscillate with a frequency of a few thousand times a second.

(Here’s a great site with info on the 555 timer:

Then I connected the output from the oscillator circuit into the clock input of a D flip-flop. And I connected the inverted output from the flip-flop into its input.

Two LEDs represented “heads” and “tails” for the electronic coin.

I added a pushbutton that would start the oscillator circuit whenever pushed.

And voila!


I had a coin tosser.

Then a friend came over. He said he was struggling to decide what he wanted for lunch. So I let him use my coin tosser to decide.

What I built wasn’t very complicated.

But if you have little or no experience building circuits, it’s hard to know where to start when you want to build that idea of yours.

That’s why I wrote my eBook “Getting Started With Electronics”.

To help people get started building circuits.

Find out more here:

Keep on Soldering!

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