need some help to build a random timer circuit that will delay from 0 to 3 sec after trigger input relay output Have looked at a number of 555 circuits but no monostable or astable ic seems capable

  • \$\begingroup\$ Please capitalise and punctuate your sentences for legibility and credibility. \$\endgroup\$
    – Transistor
    Commented Aug 14, 2017 at 7:30

1 Answer 1


The best option would be a small microcontroller with a pseudo-random delay routine. Doing this with a 555 wold be quite difficult.


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