[TRaSH]

i was just checking your diagram,
seems i don't need the second powerplug on it,
because i need to wire it to the Leonardo,
so then i only need to use the other connector on it with the jumper cables

or would it be enough to use the powerplug on the led strip and the grnd from the led strip with a jumper cable to the Leonardo ?
so leaving out 1 and 3 ?