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Clock circuit 1 HZ can be made with 2 resistors of 470 K Ohm, 1 Capacitor of 1 uF and the famous IC555.

Step 1: Bill of Materials

What you will need:

1 IC555

2 resistors of 470K

1 capacitor of 1uF

<p>Design your own clock circuit 1 HZ, using the formula showed in this instructable. </p>

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