| Versions |
  |
|
| Author |
 Topic  |
|
PACTAMAH
Russia
38 Posts |
 Posted - 10 mai 2010 : 18:55:13
|
In the Nuvi 5000 cradle:
Pin 1 through Pin 14 are the same as on the diagramme posted by DAVAUS in the preceding page with two exceptions:
Pin 3 is connected to Pins 8,9 and 22 (GND)
Pin 4 is NOT connected to Pin 7 on Hirose 18-pin anywhere.
As for the four mystery pins,
Pin 15 is Audio In Left (n/c to Hirose 18-pin!)
Pin 16 is Audio In Right (n/c to Hirose 18-pin!)
When the 3.5mm plug of the A/V cable is plugged into the jack the Pin 16 is connected to GND via the NO contacts in the jack.
Neither Pin 17 nor Pin 18 are for Video In in the Nuvi 5000.
Stay tuned. I am mucho tempted to connect my Nuvi 885 to the wife's Nuvi 5000 cradle. Once I finalise the Nuvi 5000 pinout diagramme as not to accidentally fry my 885 with some auxiliary voltage that is...
|
Edited by - PACTAMAH on 11 mai 2010 01:45:19 |
 |
|
|
alandb
390 Posts |
Posted - 10 mai 2010 : 20:40:58
|
| Will the 885 actually snap into the 5000 cradle? I was under the impression that the lock clips were in a different location on the two units. |
Alan - nuvi 855, nuvi 755T, Oregon 550, Lowrance Endura Sierra |
|
|
|
PACTAMAH
Russia
38 Posts |
Posted - 11 mai 2010 : 01:44:13
|
No, it will not. The locks in the 5000 cradle are positioned ~20mm higher than those of the 885. The 34-pin connector is the same though.
added on 12th May 2010 =>
The good news is, I found the Composite Video input in the Nuvi 8xx cradle.
However the bad news is my Nuvi 885 seems to be totally oblivious to the backup camera. It has just occurred to me that it simply does not know what to do with the video signal because it does not have the necessary software. Unlike the Nuvi 5000 it lacks the Video Input option in its Settings. Doh...
I am ready to throw in the towel unless somebody from the software camp steps in and tries to figure out how to teach the Nuvi 8xx to recognise and to react to the video signal.
Now, if I only could figure out how to embed into the post two A4 sized pages in the .pdf format with detailed wiring diagrammes of the Nuvi 5000 vs. Nuvi 880 cradles... |
Edited by - PACTAMAH on 12 mai 2010 03:55:07 |
|
|
|
hummyi
Italy
9 Posts |
Posted - 12 mai 2010 : 16:37:26
|
I am ready to throw in the towel unless somebody from the software camp steps in and tries to figure out how to teach the Nuvi 8xx to recognise and to react to the video signal.
[/quote]
In my opinion there is a pin dedicated to switch GPS/Camera, otherwise the nuvi did't know what do you want show on the screen !
The reverse gear set do you remember ?
So go back what I sad before there is a pin maybe called "GPS/Camera Switch" dedicated to do this. In the same way there is the same pin to the VB10/VB11 garmin devices connector.
Try to download the user manual from the Garmin Webste and you will see.
Maybe the same pin/switch is present into the nuvi 5000 A/V jack or not ?
However what is the famous pin ?
In the same way when you connect the FM trafic info receiver an ICON get on to the nuvi screen, so the nuvi is " pin sensitive"  |
Edited by - hummyi on 12 mai 2010 16:54:56 |
|
|
|
PACTAMAH
Russia
38 Posts |
Posted - 12 mai 2010 : 18:12:23
|
Here's the the low resolution .jpg file. If clicked it will open up a two-page high resolution .pdf file.
Please note that the individual units' pin labels were directly lifted off their respective PCB silkscreens. I had trouble identifying some of the pins in the 880 unit hence a few ?? in the picture. |
Edited by - PACTAMAH on 12 mai 2010 18:23:08 |
|
|
|
hummyi
Italy
9 Posts |
Posted - 13 mai 2010 : 08:50:50
|
Good job, thanks a lot  |
Edited by - danham on 13 mai 2010 13:48:56 |
|
|
|
DAVAUS
Australia
11 Posts |
Posted - 14 mai 2010 : 00:58:18
|
Hey, great work PACTAMAH -you got a lot of good information from those silk screens!
- I have confirmed your routing of the Hirose Pins 15, 16, 17 & 18 respectively to the Nuvi connector Pins 30, 29, 15 and 16. My bad… my diagram had these lines depicted incorrectly and I have upated it so as not to mislead!
- I do not think that the Hirose Pin 6 connects to ‘GND’ on the Nuvi connector Pin 3 - either on the cradle or in the Nuvi unit. I have measured approx 3.3 V on that line when there is no traffic receiver connected.
- The Nuvi connector Pin 3 and Pin 29 are not common with GND (pins 8 & 9) on my Nuvi cradle. The only pins on my cradle’s Nuvi connector that are common GND are: 8, 9, and 22. Perhaps some pins could be connected to ground inside the Nuvi unit itself (?)
- I have confirmed that my 885 cradle does have a connection between Hirose Pin 7 and the Nuvi connector Pin 4 (ID). I think that the Nuvi uses this line to determine if a GTM20 or GDB50 is connected. I have measured around 3.3 V on this line when a GDB50 is connected, and measured around 12 V on it when a GTM20 is connected.
- My 885 cradle has a 3.44 K surface mount resistor connected between Pins 31 and 32 of the Nuvi connector. This is probably used by the Nuvi to identify the cradle type, or version. For info: my cradle PCB is etched ‘GARMIN 105-01130-01 VER. 1’
I agree with hummyi. The software may be using the Nuvi connector pins 15/16 (Hirose 17/18) to detect if a VIB10/11 is connected before enabling Video functionality. VIB box and Cable information could help but I have found nothing useful.
edub80 asked about the audio output from the cradle pins…. the pins are directly connected to the headphone socket on the Nuvi via the cradle connector; there is no audible distortion discernable. The audio output is very clean and solid as a rock. That said, the maximum audio output is only around half that you get from an American Ipod… Garmin have probably followed the safety intent of regulations that have limited the headphone power of newer European Ipods.
The 0dB [full scale sine wave] audio output of my Nuvi 885 is 0.492 Vrms (0.696 V peak) and it reduces by around 3dB for each ‘10%’ decrement applied via the menu. The response is quite flat right across the audio range.
The vehicle that I testing with has an audio system with balanced (differential) auxiliary audio inputs. Accordingly, I have needed to design a head unit interface and preamp/driver to feed the Nuvi audio. My design is still on a breadboard as I am still wanting to put video into the interface too – but it works well… so if anyone is interested let me know and I will post the circuit.
Best regards
Sorry for my long post, and for not checking in more frequently! [*] [*] |
Edited by - DAVAUS on 14 mai 2010 01:15:24 |
|
|
|
vfrman
United Kingdom
5 Posts |
Posted - 20 mai 2010 : 22:14:22
|
Hello,
With info from this thread and other sites I have been able to wire a Hirose 18 pin plug to fit the cradle of my 765WT GPS. The "problem" I wanted to overcome was the use of the 3.5mm jack for audio out when using the GPS on my motorbike.
The key finding is that pin 7 of the plug is the garmin ID pin which tells the GPS unit what type of unit is being plugged into it. The way this is done is by different resitance values being connected between pin 7 and power ground (pin 8&9).
For my application the interesting pin numbers for the Hirose plug are:
Pin 1 = +12v
Pin 2 = +12v
Pin 7 = ID (2.2k to power ground)
Pin 8 = power ground (0v)
Pin 9 = Power ground (0v)
Pin 10 = audio - right
Pin 11 = audio - left
Pin 12 = audio ground
With the 2.2k resistor connected for the ID the GPS thinks the plug being connected is the VIB (Vehicle Integration Box). The important thing for this application is that it turns off the audio from the internal speaker so the audio is available on pins 10, 11 and 12 for connection to your bikes intercom using just the 18pin Hirose plug without having to "turn off" the audio by using a dummy 3.5mm jack plug or forcing the unit to use its FM transmitter.
Hope this helps and many thanks for getting me on the initial track for this solution. |
|
|
|
DAVAUS
Australia
11 Posts |
Posted - 21 mai 2010 : 02:54:11
|
Thanks for this information vfrman!
The resistor is an elegant solution to avoid the annoying dummy plug problem with the audio output. I am hoping that connection of the 2.2K resistor will also enable the video input when it enables the headphone/connector audio output - but I will not be able to check this for a while.
Could you advise where you found information for using the resistor to trick Nuvi into thinking that there is a VIB connected… there may be some further information that will help with the video.
Best regards
David
|
|
|
|
arkadi
6 Posts |
Posted - 24 mai 2010 : 01:59:09
|
| Thank you for doing all this research. Yesterday I have done all re-wiring using microphone jack. I also tried to use resistor solution. Got message if I remember it correctly "XM device not supported" this message pop up every time I would connect my 765T to base. Audio wouldn't switch (at that point connecting dummy plug would switch sound). So to eliminate this annoying message I have disconnected that resistor and now just using plug. Any other ideas? |
|
|
|
DAVAUS
Australia
11 Posts |
Posted - 24 mai 2010 : 18:06:23
|
Good news on Nuvi 88x, 86x and 85x Video input:
Hooking up a 2.2K resistor from the Hirose connector pin 7 to ground does enable the backup camera functionality!
I tested my Nuvi 885 with the 2.2K resistor. There were no messages [error or otherwise] and a new ‘Backup Camera’ Icon is made available on the second page of the settings menu :-) The Icon gives access to selections on how the Nuvi switches to the backup camera, the video format, and reverse light polarity etc
I did not have time to solder more wires onto that tiny connector to confirm that the audio is automatically turned on [without a dummy plug] connected. [see vfrman’s post], but this operation is entirely consistent with how the Vehicle Integration Box (VIB) would need to work.
Next, I need to confirm what the cradle’s Hirose Pin 17 (ID1) and Hirose Pin 18 (ID2) are on the Nuvi 88x, 86x and 85x. Can anyone help with this?
arkadi: Although the 765T is compatible with the GDB50/GTM20/GTM21 receivers, I could find nothing in the Nuvi 765 manual to confirm backup camera [video] functionality. The Garmin VIB11 [discontinued] product page also has a note: “The nüvi 700 series and StreetPilot c550, though compatible, will not support the VIB 11's video capabilities”. This could be why you get an error message.
Best regards
David
For anyone interested:
- both my GTM20 and GDB50 present a 100K resistance between Hirose pin 7 and ground.
- There is a little more on Garmin Nuvi ‘ID’ resistors here: http://wiki.argentdata.com/index.php/Garmin_FMI
|
|
|
|
dlipter
69 Posts |
Posted - 24 mai 2010 : 19:06:31
|
| I have a 765T. If I install the 2.2k resistor between pin 7 & ground, will the audio be present on pins 10-12, and will the traffic function still work? |
|
|
|
arkadi
6 Posts |
Posted - 25 mai 2010 : 03:15:47
|
quote:
Originally posted by DAVAUS
arkadi: Although the 765T is compatible with the GDB50/GTM20/GTM21 receivers, I could find nothing in the Nuvi 765 manual to confirm backup camera [video] functionality. The Garmin VIB11 [discontinued] product page also has a note: “The nüvi 700 series and StreetPilot c550, though compatible, will not support the VIB 11's video capabilities”. This could be why you get an error message.
Best regards
David
For anyone interested:
- both my GTM20 and GDB50 present a 100K resistance between Hirose pin 7 and ground.
- There is a little more on Garmin Nuvi ‘ID’ resistors here: http://wiki.argentdata.com/index.php/Garmin_FMI
I wasn't looking for video. I was only interested in simple audio switch without dummy plug. I wonder if they actually use resistance value to identify device connected? I used 2.17K at least that is what my meter told me (I figured it was close enough). I guess I need to try different values. I noticed they are talking about 8.2k on that web page you have provided a link to. When I find time I will try that. |
|
|
|
DAVAUS
Australia
11 Posts |
Posted - 25 mai 2010 : 03:16:25
|
Hi dlipter
The audio output jack is actually hardwired to pins 10-12 through the cradle but normal operation is that the Nuvi software does not actually ‘turn on’ the audio output device unless something is plugged into the jack [hence the term ‘dummy plug’]. When the 2.2K resistor [fake VIB11] is connected it is likely that the Nuvi 765 will switch the audio on automatically. arkadi’s post indicates that this does not occur (?), but the Garmin page for the VIB11 does seem to suggest the Nuvi 765 will switch the audio on automatically. https://buy.garmin.com/shop/shop.do?cID=164&pID=9653
The VIB11 has a traffic receiver in it so it is expected that the traffic interface will continue to function - irrespective of it recognising a VIB11. The traffic receiver’s 100K would reduce the 2.2K fake ID resistance to around 2.15K but that is a minor variation well within the standard resistance tolerance range. I think it will work, but the only way to confirm is to try!
I do not have a Nuvi 765T to test, but it would be good if you could try and let us know how you went – especially with the audio!
Best regards
David
Note: There is always a tiny ‘mono’ audio output present even when the Nuvi Audio output is switched OFF; this is just breakthrough from the mixer and can be confused as a distorted signal. When the Nuvi actually turns the audio ON the ‘stereo’ output signal is about 100 times this level [approx half a volt AC rms].
|
|
|
|
DAVAUS
Australia
11 Posts |
Posted - 25 mai 2010 : 05:52:09
|
Hi arkadi
We must have been typing our lasts posts at the same time! I will be away for a about a week - so I thought I would reply quickly now.
Yes, I [and others] want to get a simple audio switching solution confirmed – sorry that I could not test a bit more before this week because I think the 2.2K resistor will switch the audio for my Nuvi 885T!
I believe that the 2.2K resistor fakes a VIB11 because it does enable the backup camera features on my Nuvi 885T without any error messages, and that the video incompatibility between VIB11 and Nuvi 765T could be producing the error message you see.
If your error message only happens when you first connect then that is not a big issue – getting the audio to switch on [without dummy plug] is the goal. I have no idea where vfrman found information on the 2.2K resistor - but if 2.2K does not work for you I do think that it is worthwhile to try a few different resistors. However, I would be cautious about going below 2.2K ohms as the possibility of increased current raises the risk of doing inadvertent damage. The Fleet Management Interface ID (8.2K) is worth trying, but a VIB10 ID resistor [whatever that might be] could be more likely to work for Nuvi 765T without the [? Video ?] error message you observed with a 2.2K resistor.
Does anyone have any information on how Nuvi’s interpret ID components placed on the Hirose connector pin 7, or the function of ID1 and ID2 on Hirose pins 17 and 18?
Best regards
David
It may be worthwhile checking to see if a menu selection is available to switch the audio on when you have a 2.2K resistor connected. I did not think to look for this when I tested.
|
|
|
|
Topic |
|
|
|
| This page was generated in 0,64 seconds. |
 |
|
- 
- 
Nuvi Proprietary Plug Pinouts
