[time-nuts] Cheap GPS with USB, RS232, BLuetooth and PPS :)

[Tim Tuck]

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