On Sat, Oct 01, 2011 at 06:01:24PM +0100, ael wrote: > > 3) Both ark and garmin attached and working. > > pin 2 (tx on gps) : 0.01V on module load > pin 3 (rx on gps) : -5.52V on module load Looks to me as if I reversed pins 2 & 3 above, although it is what I wrote down at the time... ael