This circuit allows an LED to emit for 5 seconds with the push of a switch.
By using (t = 1.1 × R × C seconds), RC equals 4.545.
The values of R = 10 kΩ and C = 470 µF were selected based on standard values of resistors and capacitors. The momentary push button switch is connected to ground and to the trigger input with a 10K current limiting resistor pullup to the supply voltage.
When the push button is pressed, the trigger pin goes to ground.
An LED is connected to the output pin with a current limiting resistor in series to ground.
The reset pin is not used so it is connected to the supply voltage.
