After a slight redesign here it is, the trick is to getting the transistors to fully switch off not to waste current, unlike polymorphs circuit, mine is higher powered for 300ma LEDs, using a 12v supply placing leds in series might be the way... [Screenshot_2014-04-19-11-11-31.png] [Screenshot_2…

blackout circuit - 300ma cc circuit

system April 20, 2014, 4:44am 4

No bjt's only lol...

5v goes out your 12v takes over!