Refer Circuit fig below. I replaced 33k R with 100k pot, 100uF with 1000, 220R with 470R, source 14.4V motorbike battery

Flashing of 1 led did happen . But when i connected it to an array of 5(series) X 8 in total 40 led. Voltage dropped across output, only max of 10 led flashed and later on npn failed, tested with multimeter no reading . now its not flashing, glows steady.

Plz suggest me " Capacitor and NPN " that can handle more. amp used by array is 250 mA and 3012 mW

I have attached circuit and array fig. source for this project are throbbing led hunk breathing

 

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