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I'm trying to drive an NTE108 (BJT NPN) with an output pin on my MSP430G2553 and having trouble. The output (P2.4) of the MSP is connected to the base of the BJT through a 330 resistor and controlled via software on the MSP. I've attached a picture of the schematic (R1 is a recent addition). Pin P2.4 works as expected when connected to the LaunchPad. It can drive an LED and works when floating. I cannot test it with the BJT (NTE108) because I only have one and it is soldered down. I have moved the MSP over to a protoboard where it is supplied with a 3V regulator that can do 250mA.