Quote:
Originally Posted by cavorite
I used a three pin fan connector when I did the original wiring. Ground in the center, just in case I needed to exchange RX and TX.
Resoldering on PCBs is best avoided. Lifted pads are not fun.
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I usually do connector layout so that you can safely short any two adjacent pins together (whenever possible). Just personal preference after a lifetime of electronics hobby and work experience. In this case, I would do "GND-RxD-TxD". Another benefit (for SIP pin headers) is that you can use a jumper to test RxD (loopback).
But then you need to know which side is GND, of course.
