13036Re: help wiring t2-301, nuvi 350, computer
- Oct 11, 2011That is correct.
Just an FYI. The connector on the side is a USB port and can be used to connect to a computer for downloading routes and waypoints with Mapsource. It is also used for backup of any routes and waypoints you want to save since the Nuvi will appear to the PC as a storage device.
You can connect the supplied AC charger to the side port and charge the Nuvi. There is a resistor divider between the ID pin and the V+ and V- pins in that cable to let the Nuvi know what device has been connected.
Garmin's use of the ID pin to identify its own cables is not compliant with the USB specification so you need to be careful of what you connect to the Nuvi.
--- In firstname.lastname@example.org, Eric Fort <eric.fort@...> wrote:
> Good info and interesting, I just figured that the nuvi provided usb host
> capabilities and the cable was an adapter, now I know better.... that cable
> was about $30 for a basic usb cable with a resistor. So power to the nuvi
> through the cradle and serial via the side mini-usb yhat's really serial,
> yellow/black cable to t2-301 and split it out to computer and nuvi, correct?
> On Tue, Oct 11, 2011 at 12:45 PM, k7ybz <k7ybz@...> wrote:
> > **
> > Eric,
> > Unless you bought a Nuvi-350 that has been modified, the rear mini-usb port
> > on the cradle is ONLY wired for power. The D+ and D- pins are not connected
> > in the factory version.
> > The mini-usb port on the side of the Nuvi-350 is the only one capable of
> > data. In use, you plug the FMI cable (Your 010-10813-00 cable) into the side
> > of the Nuvi and with a serial connector attached to the bare wires, plug
> > that into the yellow/black T2-301 adapter cable. You must apply power to the
> > socket on the back of the mounting cradle.
> > If you do not have a yellow/black adapter cable, then you need to make one
> > so you can use a computer along with plugging in the Nuvi and having power
> > to the T2-301. The pinout of the T2-301 is different than the other Tracker
> > products. Here is the pinout of the T2-301:
> > Pin Function
> > 1 Port B in
> > 2 Port A out
> > 3 +5V out
> > 4 GND
> > 5 Power in (9-15VDC)
> > 6 IRQ/Counter in
> > 7 1-wire bus
> > 8 Port A in
> > 9 Port B out
> > The info can also be found here:
> > http://wiki.argentdata.com/index.php/T2-301
> > The FMI cable is wired as follows:
> > Yellow -- to Port B in
> > White --- to Port B output
> > Black --- to GND
> > The console of the T2-301 is only on Port A so this is the port your PC
> > must be connected to.
> > If you are using the YELLOW/BLACK adapter cable, then follow the wiring as
> > described here and use a null modem adapter for the PC:
> > Pin Function
> > 1 No Connection
> > 2 Port A Data In
> > 3 Port A Data Out
> > 4 +5v Power Out
> > 5 Ground
> > 6 No Connection
> > 7 Port B Data Out
> > 8 Port B Data In
> > 9 No Connection
> > As an additional note, DO NOT USE THE +5V Power Out to power the Nuvi as it
> > cannot supply sufficient current when in the charging mode. This was meant
> > for a GPS puck such as the GPS-18 LVC which draws 60 mA @ 5.0V. The Nuvi can
> > draw up to 500 mA when charging.
> > Larry
> > K7YBZ
> > --- In email@example.com, Eric Fort <eric.fort@> wrote:
> > >
> > > not sure what you mean the yellow and black cable.... I also don't see
> > how
> > > one would connect wiring directly to the nuvi without some kind of nuvi
> > > supported usb serial adaptor as it seems to me that the nuvi appears to
> > have
> > > usb host capabilities on at least one of it's usb ports (the one on the
> > > rear). The garmin cable I have plugs into the rear usb port and gives
> > > serial data. part number in original email for reference.
> > >
> > > Eric
> > > AF6EP
- << Previous post in topic Next post in topic >>