Determining Charge-Level on Nuvi 650 & 3xx

 

When you connect the USB cable to your 650, just hold the power switch down, release it and press the Power switch again. Keep holding it on the second press (you'll probably hear the beep tone). This will keep it from connecting to the computer (I have a Mac and the icons don't appear on my desktop) and it will say: "Going to Charge Mode...". Now, you can release the Power Switch. The next time (and anytime you press on the screen itself after that) it will say it's charging or "Battery Charging Complete". Obviously, when it says it's complete the battery icon will show it's full upon disconnecting it from the USB cable.
BTW, the 350 & 360 Nuvis do this too. Probably all the 7xxs do too.

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Nuvi 2350lmt, 27" iMac <The box said 'Requires Windows Vista or better'; So, I bought a Macintosh!> <-><-><-><-><-><->

Hmmm

Will this let me operate the unit while it is connected to the power? I have found a way to do that with a PC. If I have the unit off and locked (this is on the 750) when I eject it it stays connected to power and allows me to turn it on without reconnecting to the computer.

What I want to find a way to do is use my usb cell charger to power the unit, but unfortunately it goes into sync mode every time I plug it in, or turn it on when connected to that. Obviously I have no way to eject from the charger. I'll try your sequence and see what it does.

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Garmin Etrex Vista, Streetpilot 2610, GPSMap 60Csx, Nüvi 750, Colorado 400t, Nüvi 3790t

Question

quackinup wrote:

Will this let me operate the unit while it is connected to the power? I have found a way to do that with a PC. If I have the unit off and locked (this is on the 750) when I eject it it stays connected to power and allows me to turn it on without reconnecting to the computer.

What I want to find a way to do is use my usb cell charger to power the unit, but unfortunately it goes into sync mode every time I plug it in, or turn it on when connected to that. Obviously I have no way to eject from the charger. I'll try your sequence and see what it does.

With the ejecting point, I don't have to lock it or anything, just eject it and it goes into "regular mode"

As far as the car charger, did you try to plug it into the back of the cradle?

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Charley - Nuvi 350 - Bel STI Driver - Cobra 29 w/ wilson 1000 - AIM: asianfire -

Input

asianfire wrote:

As far as the car charger, did you try to plug it into the back of the cradle?

I looked and didn't see a usb input on the cradle for the 750 sad

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Garmin Etrex Vista, Streetpilot 2610, GPSMap 60Csx, Nüvi 750, Colorado 400t, Nüvi 3790t

jzx wrote: When you connect

jzx wrote:

When you connect the USB cable to your 650, just hold the power switch down, release it and press the Power switch again. Keep holding it on the second press (you'll probably hear the beep tone). This will keep it from connecting to the computer (I have a Mac and the icons don't appear on my desktop) and it will say: "Going to Charge Mode...". Now, you can release the Power Switch.

I tried this on my 650 and it didn't work. Was the Nuvi on or off when you connected the USB cable to it? Did you have the power switch already pressed when you connected the cable? I tried several times with no success.

USB car power

I cut a USB cable apart and severed the green and white (data) wires, leaving only red (+5V) and black (ground) wires connected, thinking that this method would provide power to my nuvi 350, but alas, as soon as it was plugged in, it gave me the computer icon on the screen. The 650 I just bought doesn't have a mini-USB port on the mounting clip like the 350 does--but the unit itself does have the mini-USB plug on the side.

I wonder if it has something to do with the voltage--perhaps it needs 12V to go into GPS mode, and 5V gets it computer connection mode?

It needs a resistor...

See http://pinouts.ru/GPS/garmin_nuvi_power_pinout.shtml

I believe this switches on the Fleet Management Interface (RS232C) - a side effect of which, is to switch off the USB interface, thus stopping it going into 'computer mode'.

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------------------------ Phil Hornby, Stockport, England ----------------------               http://GeePeeEx.com - Garmin POI Creation made easy           »      

resistor

Nice find! To quote from that link:

Quote:

Standard 5 pin mini-USB connector has pin X connect to ground through a 200K ohm resistor. To place Nuvi into charging mode, the 200K ohm resistor must be changed to 17.3K ohm. (also successful with 22K ohm resistor from Radio Shack)

So is "charging mode" our goal here? i.e. the GPS is functional when it's in "charging mode"?

dunno :-)

bigboludo wrote:

So is "charging mode" our goal here? i.e. the GPS is functional when it's in "charging mode"?

I think we've found the answer - we just need to find the question now smile

I had a conversation on a newsgroup, with a Finnish guy about the Fleet Management Interface. The way he described enabling it, is exactly what's described on that website for 'enabling charging mode'. I just think one's a side effect of the other.

So I would expect that the Nüvi's up and running, charging from the USB and probably spitting out positional information as TTL level RS232-C. But I've not actually tried it.

(I'm curious as to whether the various Traffic Modules use Fleet Management Mode...)

--
------------------------ Phil Hornby, Stockport, England ----------------------               http://GeePeeEx.com - Garmin POI Creation made easy           »      

Determining Charge-Level on Nuvi 650

Grayhawk,

I just went through the steps again (using the USB cable connected to the computer). With the 650 off, I plugged in the USB cable; I then pressed the power switch when the screen came on; I released the switch and pressed it immediately ONE more time; after the last press (second time total) I kept it pressed and it immediately went into Charging mode - at which point I released the power switch. From that point on, with the USB connected, anytime I pressed anywhere on the screen, it gave me the charging status. This also worked on a Nuvi 360 I had prior to the 650.
BTW, do NOT press the power switch again or you'll be powering the Nuvi on - in which case you won't see the charging status. However, while connected of course, it will still be charging.

--
Nuvi 2350lmt, 27" iMac <The box said 'Requires Windows Vista or better'; So, I bought a Macintosh!> <-><-><-><-><-><->

Nuvi 200 USB charging

I found this on another site for the 200. Power the unit on and hold down the battery icon on the main page for about 10 seconds. The unit goes into a diagnostic mode showing a variety of unit specs and tests. The batt voltage and level is shown. Plug in your USB and after a loud beep, you will see that the cable is plugged in and the batt charging. Power down and the unit will show the "charging battery" phrase then turn of the screen. Any screen press with bring back the same phrase to show it is still charging.

JZX, Thanks for the

JZX,

Thanks for the additional info. What I was doing wrong was that I was pressing the power switch too soon. I was pressing it right when the splash screen appeared, but you have to wait until the text below "GARMIN" appears. The sign that you are doing it right is that the Nuvi will beep when you press the power switch. Thanks again.

Using other usb chargers to power unit

asianfire wrote:

As far as the car charger, did you try to plug it into the back of the cradle?

Aaarrrggghhh, the day after I buy the charger I see the above. This sequence will work with your Motorola charger. Plug it in while in diagnostics mode and then exit that mode (do not power on or off).

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Garmin Etrex Vista, Streetpilot 2610, GPSMap 60Csx, Nüvi 750, Colorado 400t, Nüvi 3790t

My nüvi 200 always acts flakey after being put in diagnotic mod

My nüvi 200 always acts flakey after being put in diagnotic mode, so I don't do it anymore. After turning it back on it doesn't even know what time it is until it gets a satellite lock. Powering it off repeats the problem. I think I have narrowed down to having an SD card in the slot. taking the SD card out and powering it up got it working again. The SD wasn't damaged or corrupted and worked fine after putting back in the unit.

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><> Glenn <>< Garmin nüvi 2598

Operating a unit while connected to a PC

Quackinup,
after reading your post, I thought you can operate your Garmin while it's connected to a PC. In my case it doesn't work.If it turns on, i can't operate it .
Does anybody know how to operate a unit while it's connected?
Thanks, folks.

Right click and select eject

galaxtel wrote:

Quackinup,
after reading your post, I thought you can operate your Garmin while it's connected to a PC. In my case it doesn't work.If it turns on, i can't operate it .
Does anybody know how to operate a unit while it's connected?
Thanks, folks.

Since it goes into external drive mode when connected to the PC, right-click on the USB drive icon and select Eject. It should come out of drive mode and operate normally.

Can't operate Garmin while it's connected to a PC

Actually with my Nuvi 650 the eject function turns off the unit. After I turn it on , it connects to the computer again and can't be operated.

My nüvi 200 works the same way.

galaxtel wrote:

Actually with my Nuvi 650 the eject function turns off the unit. After I turn it on , it connects to the computer again and can't be operated.

My nüvi 200 works the same way.

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><> Glenn <>< Garmin nüvi 2598

Operating while connected to the PC

galaxtel wrote:

Quackinup,
after reading your post, I thought you can operate your Garmin while it's connected to a PC. In my case it doesn't work.If it turns on, i can't operate it .
Does anybody know how to operate a unit while it's connected?
Thanks, folks.

I think this may vary by unit. With my Nuvi 750 I have to have the unit off and the switch in locked mode when I connect it. After it connects to the PC I eject it and it starts up as if it were not connected to the computer. If I don't have the switch locked, then when I try to turn the unit on it just goes into sync again as mentioned above.

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Garmin Etrex Vista, Streetpilot 2610, GPSMap 60Csx, Nüvi 750, Colorado 400t, Nüvi 3790t