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Review Details

FTDI FT232RL USB Breakout Board - Foca

FTDI FT232RL USB Breakout Board - Foca

Product Review (submitted on August 31, 2015):
Used this in one of my projects and had a hard time finding out what went wrong. For some reason the power dropped when running at 5 volt when an ESP03 with a relay board was connected. Found out that there is a resistor, R1, in the power line between the USB's Vcc and the Foca's Vccio. Why?