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Actually, all you need is a diode for the power button. If it works like a PIC, and I think it does, when off and set to output a digital line pulls to ground with the internal transistor. You just have to make sure it's on the whole time when the main relay is on. I used that for 8x8 LED matrix displays.
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XPort 1.22 -GPS port splitter, logger, and USB device resume fix
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