Touch Sensor Using 555 Timer Ic. 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. Pin 3 is connected with resistor r2 and pin 8 is connected with 6v power supply.
Pin On 555 Timer from www.pinterest.com
Here the stable stage is low so the timer outputs low after the trigger is removed. Connect 2 pins from pin 1 pin 2 of ic as the 1st touch plate and connect 2 pins from pin 6 pin 8 of ic as the 2nd touch plate. The 555 timer ic has 8 pins.
Touch sensor switch circuit with 555 timer.
This is a very simple touch sensor switch that is build with the 555 timer ic. Pin 3 is connected with resistor r2 and pin 8 is connected with 6v power supply. Basically in this circuit we will have a led which turns on when we touch a pin of timer. Pin 5 of 555 timer ic is connected with a capacitor of 0 01 μf.
