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Electronic dice kit is based on the NE555 oscillator circuit and fun circuit CD4017 counter display kit. Can simulate the dice, make fun of the game. 

1. Kit parameters: 
Supply voltage: 4.5-5V
Dimensions: 74 * 35mm

2. Function play:
           When a power-up, 7 LED will randomly display a number of points, players press the switch S1,7 all lit LED only after about 7 seconds LED light starts blinking, until finally showed stable points. Throughout the end of the first "crap" process.
 
3.Circuit:

             circuit mainly by the pulse generator and a decade counter circuit. Pulse generator and external elements by NE555 multivibrator, when you press the button S1 when Q1 turns on, the output pulse NE555 3 feet, then five turns the output CD4017 output high, resistors and transistors by different combination, can drive seven LED light to indicate the number of points 1-6 points.

  1. Circuit diagram:

    5.Component list:

    serial number

    Component

    Value

    Label

    serial number

    Component

    Value

    Label

    01

    resistance

    470R

    R8  R9  R10

    11

     audion

    S8050

    Q2  Q4  Q5

    02

     

    1K

    R7

    12

     

    S8550

    Q1  Q3

    03

     

    10K

    R3--R6   R12--R16

    13

    IC socket

    8PIN

    U1

    04

     

    3.3M

    R2

    14

     

    16PIN

    U2

    05

     

    4.7M

    R11

    15

    IC

    NE555

    U1

    06

     

    10M

    R1

    16

     

    CD4017

    U2

    07

    capacitance

    104P

    C2

    17

    Terminal

    XH2.54 2P 

    J1

    08

     

    1uF/50V

    C1

    18

    Power  line

    XH 2P 

    1

    09

    LED

    Ф5红发红

    D1--D7

    19

    PCB

    FR-4 

    74*35mm

    10

    touch  touch  switch

    6*6*5

    S1

    20

     

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