accidently plugged laptop charger to arduno help

oh its still working weirdly now.

Ummm

@t4h232

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It will help you get the best out of the forum in the future.

Even my crystal ball does not know what you mean by "working weirdly now." :astonished:

t4h232:
oh its still working weirdly now.

Do you mean:

weirdly, i'ts still working now (meaning its working correctly, and you were somewhat surprised)

or

it's working weirdly now. (meaning there is some undisclosed fault that you want help with)

The voltage regulator connected to the barrel jack is rated at 20V maximum input voltage.
Most laptop power supply/battery chargers are a lower voltage than this.

So it is likely to survive, however the regulator would get hot with prolonged use in that condition.