This is an interesting project that will display in random the number from 1 to 9 on the 7 segment display.
You can use this project device to replace a traditional dice when you’re playing such as Monopoly, Snake Ladder, or something else like playing Jumanji.
- The generation of clock is done by using a 555 timer which is connected in the astable mode at a frequency of approximately 50 Hz.
- This clock signal is fed into the decade counter which outputs are connected to 4 bit binary adder which provides a binary output equavalent to binary input + 1.
- The outputs are then connected to a BCD to 7 Segment Decoder which is used to drive a common anode 7 segment display.
- The output from the 555 timer is then connected to the input of U1 7490 decade counter.
- When the decade counter reach the count of 9, the outputs of QA and QD will go to logic “1″ and the counter is reset.
- The 7447 BCD to 7 segment decoder is used to drive the 7 segment common anode display.
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Parts List of Digital Dice Project
- U1 : 7490 Decade Counter
- U2 : 7483 4 Bit Binary Adder
- U3 : 7447 BCD to 7 Segment Decoder
- U4 : Common Anode 7 Segment Display
- U5 : 555 Timer
- R1, R2 : 1 k ohm 1/4W, 1% resistor
- R3-R9 : 270 ohm 1/4W, 5% resistor
- PB : Normally Open Push Button
- C1, C2 : 0,01 uF/25V Ceramic Capasitor
- E1 : 220uF/16V Electrolytic Capacitor
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