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IF FOR loop problem getting my resistors burnt

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(I'm not very much good at coding)

When I'm using this Dimmer Code then its working fine even for a long time and nothing is getting burnt nor heated up.

when the code enters into if() loop only at that time my resistor burnt 2 times.
so it is due to zero cross detection isn't happening due to interrupts.(since onReceive() is an ISR & even dim_zero_crosss_int is also an ISR)

Thanks , I've uploaded programs as well as proteus circuits too.
Will be waiting for a solution
Thanks in advance


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