Did you try the 3.3v pin on the arduino?
A 27R on the base is far too small make it a 2K7 at least. Are you trying to control the power to this device or send a signal to it?If a signal then :-Then on the collector you need a pull up resistor, say 1K to the 3V line.
Did i get something wrong?
QuoteDid i get something wrong?Maybe. Where did the 1.3 and 0.05 come from?
I used a 27 resistance since i used the ohm law: 1,3/0.05 = 27?Did i get something wrong?