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Hi all, I have an msp-exp430g2, my power supply is from USB and i have another unit (LMR61428) that convert 3.3 volt to 5 volt. I need this conversion unit to work only when I need. if i connect it to the VCC pin, it works all the time. Ive tried to connect it to an I/O pin that I can program to be on and off but the current output from the I/O pins is to low. Is there anyway to program the VCC pins on and off? or to increase the current output of the I/O ports? P.S. i tried to build an electronic switch with a bi-poler transistor but i couldnt make it work Thanks, Ofe