containsmachine

【Creative PCB】Lucky Roulette

Overview

The principle is roughly as follows: after pressing SW1 (note that SW1 is a self-reset button, not a self-locking button), VCC charges C2, discharges R1, and drives Q1 to conduct, NE555 starts to vibrate, and generates a signal to CD4017, which drives LED1- 10 emits light in sequence until C2 is discharged and NE555 stops oscillating, producing a final result

The rotation speed of the roulette wheel depends on the values of R4 and C5, and the continuous rotation time of the roulette wheel depends on the values of R3 and C4.

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2025-05-09 02:48:42

spwm
include "msp430g2553.h" const unsigned int spwm[] = { 250, 327, 396, 452, 487, 499, 487, 452, 396, 327, 250, 172, 103, 47, 12, 3, 12, 47, 103, 172, }; unsigned int n=0; void TimerA_PWM()//Generate PWM
Understanding of analog ground and digital ground
[i=s]This post was last edited by paulhyde on 2014-9-15 09:39[/i]In the design of electronic systems, in order to avoid detours and save time, the requirements of anti-interference should be fully con
Attenuator Specifications
The technical indicators of attenuators include: operating frequency band, attenuation, power capacity, return loss, etc.(1) Operating frequency bandThe operating frequency band of an attenuator refer
Who is this? An oversized Pad that turns into a "smart desktop"?
Recently, I have been overwhelmed by the task of selecting topics for CES 2013. I have to play the game of leaking secrets. Yesterday, I visited a Chinese PC manufacturer. Just when I was about to sol
Compile error problem
I was reading teacher Xia Yuwen's book and saw a program. I input this program into Quartus II, but there was an error when compiling. The program is as follows: `include "Top.v" `include "Block.v" `i
AD15 Help, help, help
drop.......

Datasheet More

Circuits More