Product Display
Kit Parameters
Product Model | TJ-56-40 |
Supply Voltage | 4.5–6 V (DC power supply) |
Board Dimensions | 75*35mm |
Functional Description
When the device is powered on, the seven LEDs will randomly display a value. Upon pressing switch S1, all seven LEDs will light up; after a few seconds, they will begin to flash, eventually settling on a stable value. This completes one full "dice roll" cycle.
The circuit primarily consists of a pulse generator and a decimal counter. The pulse generator is an astable multivibrator built using an NE555 timer and peripheral components. When switch S1 is pressed, transistor Q1 turns on, causing pin 3 of the NE555 to output pulses. This triggers the CD4017 decimal counter, which cycles its five output pins to a high state in sequence. Through various combinations of resistors and transistors, these outputs drive the seven LEDs to display a value from 1 to 6.
Circuit diagram
Shipped as separate components
High-quality circuit board
