PaulRB:
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If you want to get a transistor to help your MOSFET switch fully on, any common npn will do, for example bc337.
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Paul, I tried now with BC337-40 but it's not lighting up at all, I also received the IRLB8721 mosfet and it acts the same as the other one I used, it dims the strip but it's not fully lights it up.
Now I don't know why the circuit is not working at all when the transistor is connected like you see in the attached photos.
If I connect the resistor to the large MOSFET base, it dims the led, but if I connect it like you see bellow, it doesn't light up at all. Is the BC337-40 only working with 5v and not 3.3v ?
Thank you for any more advices!
