Please take a look of :
SoarTronic_IOIO_UART_manual_v004<http://dl.dropbox.com/u/71666155/SoarTronic_IOIO%20UART_manual_v004.pdf>
in www.soartronic.com. That uses MAX232 chip, and works with GPS-NAV, and
any other RS232 device.
You can also find full documentation, if you want to build your own PCB.
2012/9/14 Simon Taylor <simon.taylor...@gmail.com>
> On 14 September 2012 11:11, Jacques Legalland <legall...@hotmail.com>
> wrote:
> > Hi Adam,
> >
> > First idea :
> > the MAX323 board uses a MAX3232 IC. This IC doesn't respect exactly the
> > RS232 voltage (+12v, -12v), but only +5v, -5v (See the attached
> datasheet).
> > Maybe, this is not enough for the GPSnav which is supplied with 12v.
> > If you have an oscilloscope, you can see on pin 2 & 3 of DB9 if the
> GPSnav
> > exchanges with IOIO.
> >
>
> I couldn't find the attached datasheet, but I reckon it may be talking
> about one of the other MAX chips?
>
>
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