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I have a 555 timer in monostable mode connected to a momentary push button. My goal is to power the circuit, and then press a button that will start the 555 timer for 10 seconds, then completely stop, until the button is pressed again. I’ve tried making a prototype on Tinkercad, and it works well. However, the LED always turns on for 10 seconds without pressing the button. How can I make it only start when I press the push button, not on power-up? enter image description here

Here's the schematic: enter image description here

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  • \$\begingroup\$ There is no question you want to have answered. Please ask a question by editing it in. \$\endgroup\$
    – Justme
    Commented Jun 30 at 13:28
  • \$\begingroup\$ Hi, @Justme Is it clear now? \$\endgroup\$
    – Michael
    Commented Jun 30 at 13:38

1 Answer 1

Reset to default
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Solved: Just connect the C1+ to BAT1+ and C1- to THR and DIS

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  • \$\begingroup\$ Thanks for the update. Now you can mark it as solved. \$\endgroup\$
    – liaifat85
    Commented Jun 30 at 14:59
  • \$\begingroup\$ Does it solve the problem in Tinkercad or in real life? \$\endgroup\$
    – Justme
    Commented Jun 30 at 15:38
  • \$\begingroup\$ @Justme In tinkercad. I haven't tried IRL yet. \$\endgroup\$
    – Michael
    Commented Jul 1 at 14:02
  • \$\begingroup\$ @Michael Please understand that even if it works in Tinkercad now, not even the datasheet can tell you how it works in such a scenario, so Tinkercad may simulate it incorrectly. Perhaps you should use the RESET pin for proper operation. \$\endgroup\$
    – Justme
    Commented Jul 1 at 14:12

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