Touch Sensor Using 555 Timer Project Report. A touch switch is basically a simple switching circuit activated upon a touch. Technical specifications characteristics supply voltage.
As you know ne se 555 is a very popular timer ic with multiple applications in different projects. Touch the sensing plate of the alarm with your finger and it starts beeping and then stops. This simple touch sensitive alarm is developed by using ne 555 timer ic operated as a monostable vibrator.
Here 555 timer ic is configured in monostable mode.
As you know ne se 555 is a very popular timer ic with multiple applications in different projects. A touch switch is basically a simple switching circuit activated upon a touch. This kind of sensor switch is suitable for making touch operated bells buzzers of small toys which operate for a small time and then switch off automatically. Basically in this circuit we will have a led which turns on when we touch a pin of timer.
