Product Description

Fun Kit

Simple

Guessing Dice Game Electronic Kit

When powered on, the 7 LEDs will randomly display a point value. When the player presses switch S1,

all 7 LEDs will turn on. After a few seconds, the 7 LEDs will start flashing until a stable point value

is finally displayed.

Available in five LED light colors

                                          Red light                 White light               Green light

                                                                        Blue light                     Yellow light

Product Dimensions

Measured manually; a margin of error of 1–2 cm is considered normal

Product parameters

Parameter	Value
Product Name	Guessing Dice Game Props Electronic Kit
Operating Voltage	DC 5V
Dimensions	74mm x 35mm
PCB Material	Double-sided 1.6mm FR-4 Board
LED Colors	Red / White / Yellow / Blue / Green
LED Quantity	7 Pcs

List of Original Documents

Component Name	Parameter / Value	PCB Marking
Resistor	470R	R8, R9, R10
	1K	R7
	10K	R3-R6, R12-R16
	3.3M	R2
	4.7M	R11
	10M	R1
Capacitor	104P	C2
	1uF / 50V	C1
LED	5mm Red	D1-D7
Tact Switch	6*6*5	S1
Transistor	S8050	Q2, Q4, Q5
	S8550	Q1, Q3
Integrated Circuit	NE555	U1
	CD4017	U2
Terminal Connector	XH2.54 2P Vertical	J1
Power Cable	XH 2P Single Head	1
PCB Board	FR-4	35mm * 74mm

Schematic diagram

Circuit Principle:

The circuit is mainly composed of a pulse generator and a decade counter circuit. The pulse generator forms an astable multivibrator consisting of the NE555 and its peripheral components. When the push button S1 is pressed, Q1 turns on, and pin 3 of the NE555 outputs pulses. Consequently, the 5 output terminals of the CD4017 output high logic levels in sequence. Through different combinations of resistors and transistors, it can drive 7 LEDs to light up, indicating a dice count from 1 to 6.

1. The PCB is printed with component silkscreen markings; please solder according to these markings.

2. Resistors have no polarity, but they have different resistance values. Please make sure to distinguish them during soldering.

3. Electrolytic capacitors and LED lights have positive and negative polarities. The long leg is positive (+), and the short leg is negative (-).

4. When connecting the power line to the terminal block, pay attention to the positive and negative polarities to avoid reverse connection.