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Flores, so you put the resistor divider on the RX and TX pins of the micro, and not on the lines that actually leave the board? Or was on the lines that leave the board? So, If I use the pins that are leaving the board, the separate header would need a voltage divider that goes from 12v down to 3.3v? And if I just bypass the MAX232, the divider would have to go from 5v down to 3.3v?
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