eBay

Features:

7 pcs of 5mm red LED electronic tweezers, kit based on NE555 oscillator circuit and circuit CD4017 counter display kit.
You can simulate dice with the kit and get the fun of the game.
100% brand new and high-quality.
It is made of premium material,durable and has long service life.
It can replace real dice and provides more fun while playing.

Specification:
Type:Logical IC
Working Temperature:-20~60℃
Voltage:4.5~5V
Color:Blue/Green
Material:Metal
Application:Electronic Circuit
Size:68*35mm/2.68*1.38in
Function: When power is on, 7 LEDs will randomly display multiple points. The player presses the switches S1 and 7 to light the LEDs. After about 7 seconds, the LEDs will start to flash until the stable point is displayed. The entire first "trial" process ends.
Circuit: The circuit is mainly composed of a pulse generator and a decimal counter circuit. The pulse generator and external components are made up of NE555 multivibrator. When you press S1, Q1 turns on, output pulse NE555 3 feet, then outputs CD4017 output high voltage. Different combinations of resistors and transistors can drive 7 LEDs to indicate the number of points. 1-6 points.

Components and Parts	Number	Value	Packaging	Quantity
PCB				1
NE555 Chip	U1	NE555	DIP-8	1
CD4017 Chip	U2	CD4017	DIP-16	1
IC Base		8P	Straight Cutting	1
IC Base		16P	Straight Cutting	1
Switch Button	S1	665	Straight Cutting Black	1
XH2.54-2P Port	J1	2P Straight	White	1
Electrolytic Capacitor(50V/1UF)	C1	1 UF	4*7mm	1
Ceramic Capacitor	C2	104	0.1UF	1
Resistor	R1	10M	1/4W	1
Resistor	R2	3.3M	1/4W	1
Audion S8550	Q1,Q2	S8550	TO-92	2
Resistor	R7	1K	1/4W	2
Resistor	R11	4.7M	1/4W	2
Audion S8050	Q3,Q4,Q5	S8050	TO-92	3
Resistor	R8,R9,R10	470R	1/4W	5
Red LED	D2,D3,D4,D5,D6	Red	5MM	7
Resistor	5,R6,R12,R13,R14	10K	1/4W	10

Package List:
1*Electric Dice NE555 CD4017 DIY Set

Note:

As different computers display colors differently, the color of the actual item may vary slightly from the above images.

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