Simple 6 LED Random

[david_p]

Just joined the forum I hope this is the right section.

Our group has come up with the idea of a random output generator with 6 LED's for display.

The circuit has to be solar powered.

The circuit would need an on/off switch, reset switch and involve a chip capable of giving a random 1-6 outputs shown by the LED's switching on. It is for a game so it would be better if it rotated around the 6 LEDs a few times before stopping?

I did some electronics at school but I was thinking about changing a electronic dice circuit? or somehting similar?

Any ideas much appreciated

Thanks Dave

 

[(*steve*)]

There are many such circuits around.

I would suggest that you run a high frequency oscillator while a button is pressed by the user, then perhaps slow the frequency until the oscillator stops.

Then I'd look at the 4017.

 

[Laplace]

Oscillators are an analog approach. Try Google "Pseudorandom number generator". This is a digital approach most often implemented with shift registers and gated feedback to the input of the shift register. The simplest circuit overall would use a single microcontroller driving the LEDs directly and generating the random sequence in software.

 

[(*steve*)]

True, that would be simpler.

I would still consider using the length of time the user pressed a button to seed your random number.