On this enterprise, I will current you the fitting method to make a straightforward Unbiased Digital Dice with LEDs. This enterprise consists of 6 LEDs, a 555 Timer IC and a 4017 Decade Counter IC and produces a random amount between 1 and 6 by lighting up the corresponding LED.


Participating in with dice is an age earlier recreation. All of us prefer to play with it too. Participating in with dice needs us to pick up a dice and assure that it is unbiased. Making a block as a dice and chopping it clearly to ensure that it is unbiased is all an earlier story. The dice turns into biased if the shape should not be scale back successfully.

Moreover, the dice can grow to be biased attributable to deformations. If it is a picket die, it is going to presumably deform attributable to dampness throughout the atmosphere or attributable to mechanical stress. To resolve all these points which we now have with a standard dice, we now have made a dice circuit which solves all the problems of a standard dice.

Moreover Be taught the Publish: PWM LED Dimmer Using NE555

Now, we will current you an digital LED dice which is nearly unbiased. There is not a chance to cheat as a result of the circuit operates at such a extreme velocity that the circuit is sort of imperceptible to the human eye. There’s moreover little repairs and there could also be hardly any have an effect on on getting outdated of the circuit. The frequency may fluctuate a bit with change in power present voltage, getting outdated of the full of life and passive parts nonetheless nonetheless the randomness will doubtless be preserved with none hassle.

Digital LED Dice Circuit Diagram

Digital Dice with LEDs Circuit

Circuit Diagram of Unbiased Digital Dice with LEDs – ElectronicsHub.Org

Elements Required

  • LEDs X 6
  • 555 Timer IC
  • CD4017 Decade Counter IC
  • Resistors – 2.2KΩ, 100KΩ X 2
  • Capacitors – 1nF and 0.1µF
  • Push Button
  • 9V Battery
  • Breadboard
  • Connecting Wires

Operation of Unbiased Digital Dice with LEDs

This circuit makes use of 555 timer as an astable multivibrator. On this mode, the circuit is organized with R2 = 100 KΩ, R3 = 100 KΩ and C2 = 0.1 µF.

With this configuration, the circuit operates as a pulse generator with a frequency in order of kilo hertz. Which implies the circuit produces a clock cycle of about 0.000210 seconds which is imperceptible to the human eye. We will not observe the values which change at that sooner value so there could also be hardly any danger of getting the dice biased.

The clock pulses are given to a counter cum decoder circuit IC 4017 with the seventh output given to reset. It has 9 attainable outputs out of which, the seventh is given to reset on account of we solely desire a rely as a lot as 6 as a dice has six faces solely. The first six outputs are given respectively to the LEDs, so that the respective LED will glow for the corresponding rely.

Unbiased Electronic Dice with Leds Image 1

If the rely is 1, LED-1 will glow. If the rely if 2, LED-2 will glow and so forth until the sixth rely. When the rely is six, the sixth LED will glow and after that for the next clock pulse the counter will advance and the rely increments to seven. On this rely, the circuit resets itself as a result of the seventh rely is given to the reset pin which is PIN-15.

Let me let you understand that the power present pin and ground aren’t confirmed throughout the circuit diagram as it is the schematic generated by the software program program Proteus. Nonetheless, the power present of 9V is given to the 16th pin of IC 4017 and the eighth pin of IC 4017 is given to ground.

That’s how the circuit capabilities and you might enhance the frequency of the circuit in case you actually really feel that you simply simply need further randomness so that this can be very exhausting to know. This circuit may very well be utilized on a typical aim PCB with a 9V DC power present.


This unbiased digital dice with LEDs may be utilized wherever standard dice is used like: 

  • Snakes and Ladders
  • Chutes and Ladders
  • Ludo
  • Monopoly
  • Enterprise




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