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

ะค5Red

D1--D7

19

PCB

FR-4 

74*35mm

10

touch  touch  switch

6*6*5

S1

20

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