Electronic Dice

Our esteemed customers can avail Electronic Dice from us. A dice when thrown can take any position to give the players random number out of six. The effect can be very well experienced and even commercially exploited to play actual game of electronic dice with this kit.

In the conventional game, a dice is thrown and the player watches what position it takes out of six possible positions. The dice needs to be positioned randomly at every throw. This effect is practically implemented by a small inexpensive electronic circuit.
About the Circuit :

• The circuit is built around two ICs namely 4029 (up/down Counter) and 40106 an inverting Schimitt Trigger. A schimitt trigger inverter, N1 from 40106 is used to produce oscillations. A simple RC square wave oscillator is built using this gate. The frequency of oscillations depend upon R1, C1.
• When power is applied to the circuit before pressing S1, pin 7 i. e. TC (terminal count) output is  Hi and N2 makes pin 1 LO. As soon as S1 is pressed, clock is applied to clock input of 4029 (pin 15). Now the counter starts counting in binary, UP counter mode (Pin 9,10 are pulled Hi).
• The three outputs of this binary counter are used to drive three columns  of two LEDs each and a single LED. D1, D2, D3 and D4 will become ON simultaneously by virtue of pin 14 of 4029 going Lo. D5, D6 forms the next group, which is driven from output pin 11 of 4029, and D7 is driven from third output pin 6.
• Four Schmitt trigger input gates N3-N6, which were left unused, are now used to drive LEDs through limiting resistances R3-R6. The circuit starts with random outputs glowing and after completing a binary cycle of 8 clock pulses, loads the levels from logic inputs 4,12,13 to 6,11,14 outputs and thereafter run in binary counter sequence. Thereafter LEDs goes on glowing as per the counter outputs, which looks random by virtue of physical placements of LEDs on PCB. This means the LEDs (say D1, D2 ) are placed not in any type of sequence as per the counter outputs but are placed randomly ( D1 at bottom and D2 at top).  
• As soon as the switch is released, counter stops getting clock pulses and thus the counter’s output states get frozen. The outputs, which are LO, drive the corresponding LED/LEDs and the corresponding number of dots gets displayed.
• The frequency of LED flashes can be altered by suitably changing R1, C1.
• The circuit can be powered from 9v battery or a DC power derived from mains through eliminator.