LED Zeppelin game circuit


Posted on Aug 20, 2012

The name of our game, LED Zeppelin, is a play on words. It comes not from the pop group of the same name but from Graf Von Zeppelin, a German who invented the first rigid air ship in 1900. The association fits perfectly. The game consists of six LEDs and an indicator LED that flashes at a rate of about 2 cycles per second. A push button is the `Operations Control` and by carefully pushing the button in synchronisation with the flashing LED, the row of LEDs will gradually light up.


LED Zeppelin game circuit
Click here to download the full size of the above Circuit.

The circuit consists of a three-inverter CMOS clock-oscillator driving Q8 that flashes the LEDs on and off. The other output from the oscillator is used to charge up the 470u electrolytic C2, via R3. The output from pin 3 is in the form of a square wave




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