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Electronic Dice


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    42778db8d98081551c8dae155471f3e375661758

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By: kurt

Push a button to roll the dice. When you let go of the button, the result shows up on the red LEDs just like on real dice. This is a simple beginner's open source hardware project that you can show off to your friends the next time you play a board game and can't find the dice for it!

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Files

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Bill of Materials

Qty Part # Description Schematic ID Source
1 B8a27b40dc8c102e42db936b8d795d774992a704 CD4017BE IC, 4000 CMOS, 4017, DIP16, 18V IC2 Source
1 6ff6f1f238f6d58bf3404a4f2e252ec33d9a96cc CF14JT1K00 1/4w 1K ohms 5% Carbon Film Resistors R1 Source
1 698d2f37a694875c8f78881a82279c6382001644 CF14JT1M00 1/4w 1M ohms 5% Carbon Film Resistors R2 Source
1 462aff4d7f716804047bfa05da375391a2a7a4a8 SR151A151KAR CAPACITOR CERAMIC 150PF, 100V, C0G, RADIAL C1 Source
7 D00b67b20fee50311074bf038882d60bcfccccb4 WP7104ID Red T-1 3 mm 40° Tinted Diffused 20 mcd 2 V Solid State LED Lamp Through Hole LED1,LED2,LED3,LED4,LED5,LED6,LED7 Source
1 9c254bacadf6ab59d82ec2be6da0e8db4397f1ab NE555P TIMER SINGLE PRECISION,DIP8 ,0.5MHZ IC1 Source
7 C1421b1570a386189f40aa8af2716cd1ac9b2bc6 1N4001-G DIODE RECTIFIER 1A 50V DO-41 D1,D2,D3,D4,D5,D6,D7 Source
1 Ac80c5e94a7c8004f18a8fcb1ea1554763bc44a2 BS6I SNAPS 9V 6" LEADS I-STYLE JP1 Source
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Steps

7. Insert wires

Insert red jumper wires as shown.

P5213549 P5213548

8. Insert wires

Insert orange jumper wires as shown.

P5213546 P5213543

9. Insert wire

Insert long red jumper wire as shown.

P5213541 P5213540

10. Insert 150pF capacitor

Insert 150pF capacitor as shown. Use a capacitor with a smaller capacitance to increase the frequency of the 555 timer and make the die "roll" through more digits while the button is held down.

P5213537 P5213534

11. Insert resistors

Insert 1M (brown,black,green,gold) and 1k (brown,black,red,gold) resistors as shown. Decrease the resistance of the 1M resistor to increase the frequency of the 555 timer.

P5213533 P5213531

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Revisions



6 - updated description
5 - updated step numbers.
4 - changed LED part
3 - added a description for the project image
2 - added file descriptions
1 - Initial project release



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