On 01/12/2010 15:04, Rix Seacord wrote:
Tim
Sorry in my haste I did not realize there were 2 distinctly different
modules.
With or without bluetooth. The sans bluetooth module has a coaxial
connector for +5v input which is weird since, as you say the usb port
powers the unit.
On the schematic left side there what looks like a coaxial type power
connector. The sleeve going to the positive side of the supply instead
of ground. The connector is J2 in the
http://www.sureelectronics.net/pdfs/GP-GS009_Ver1.0_EN.pdf users guide.
ok... now I see it on version 2 - don't know why they did that - but I
have seen other devices with the ring and tip swapped. At least they've
put a diode in there so a reverse polarity moment is going to stuff it.
regards
Tim
--
VK2XTT :: QF56if :: BMARC :: WIA :: AMSAT-VK :: AMSAT
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