5mm Red LEDs Electronic DIY Kit (NE555)

Description 5mm Red LEDs Electronic DIY Kit(NE555) 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.   4.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 Ф5RED D1–D7 19 PCB FR-4 74*35mm 10 touch  touch  switch 6*6*5 S1 20