Page 44 - Electronics Starter Kit_EN

Wiring diagram

10.4 Circuit Explanation

In this circuit we connected the pins 4 and 8 to 5V (it is okay if we did not connect pin 4), we
connected pin 5 to a 100nF capacitor to remove the noise through it to GND if exists (it is okay if
we remove it), pin 1 to GND, pin 3 to a resistor and a red LED, to understand how this circuit
works, let us suppose that C1 is empty, so the voltage on pin 2 is almost zero, the output is high,
pin 7 will be almost 5V on it so C1 will start to charge, and the blue LED will light up, because it
is already connected to GND, it is in need only to 5V to light up.

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