555 LED Dimmer flickering

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electrongod1

Joined Sep 8, 2018
16
I prototyped this circuit on a breadboard and it works perfectly. Ordered some pcbs using EasyEDA, assembled the components and the LED strip flickers. Have compared my breadboard wiring to the pcb and all looks fine. Tried to troubleshoot with my scope, but I'm not that smart. Just an old guy trying to have fun. Any help would be appreciated.
 

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