230V Flashing light

Control lamps without a microcontroller.

My door open indicator has a light shining on the door. The purpose of the lamp was that I do not forget to close the door because the lamp is shining. But over time I got used to the lamp and still left the door open.

That's why I now have a flashing light that makes the lamp blink, so that it stands out better.

I calculated the flashing frequency via this site . It works with a 555 switched as an astable multivibrator.

The circuit (see diagram in the left-hand side) works with a SSR (solid state relay) so that you don't hear any relay clicking. Finally I added a 5V mini power supply (the black block).

Case (Openscad file)


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