Keyboard disabled during motion
Printed From: the12volt.com
Forum Name: Mobile Video, GPS, and Navigation
Forum Discription: Mobile Video Head Units, DVD Players, LCD and TFT Monitors, Navigation, GPS, PS2, PS3, XBox, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=46890
Printed Date: May 14, 2024 at 10:56 AM
Topic: Keyboard disabled during motion
Posted By: allsteelcover
Subject: Keyboard disabled during motion
Date Posted: January 04, 2005 at 2:11 PM
Key board disable during motion is there a way to over ride the function that disables the key board when the truck is moving on a 2004 Dodge Ram?
Replies:
Posted By: auex
Date Posted: January 04, 2005 at 6:34 PM
What the hell are you talking about, keyboard? Would you like to be specific???
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Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.
I've been sick lately, sorry I won't be on much.
Posted By: da_ridge83
Date Posted: January 05, 2005 at 9:09 AM
need to be more specific. brand model??
Posted By: allsteelcover
Date Posted: January 06, 2005 at 9:04 AM
2004 Dodge Ram with a factory navigation system. It operates on Harman Becker software. The model of radio -- I'm not sure, of maybe a Alpine brand. But when entering location or cities you will have access to a keyboard but only if the truck is stopped. I would like to over ride this to allow operation during motion.
Posted By: auex
Date Posted: January 06, 2005 at 9:41 AM
OK, to over ride that all you would have to do is disconnect the speed sense wire from the navigation. Of course if you do then the nav won't work. There is nothing you can do.
-------------
Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.
I've been sick lately, sorry I won't be on much.
Posted By: allsteelcover
Date Posted: January 06, 2005 at 10:55 AM
Would it be possible to install a momentary sw in the VSS line that can be pushed for keyboard use than released when finished? would this cause a problem? Can you tell me what the VSS is for? It seems the nav sys would not need a VSS to for motion detection. Is there another use or need for the speed sensor?
Posted By: auex
Date Posted: January 06, 2005 at 3:54 PM
Well, VSS is required. Man I really need to find a good online definition for "dead reckoning". Ok basically this is the way a nav works. When you power the unit up, it will use the gps antenna to acquire the vehicles position, hell techinically you can take the antenna out of the car after this. After that it switches to "dead reckoning" which means that it will start using the VSS(vehicle speed sensor), reverse light, and a gyro to tell you where you are(when you move around). Disconnecting the VSS wire would basicaly make the nav think that the vehicle never moves from the spot it was disconnected.
-------------
Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.
I've been sick lately, sorry I won't be on much.
Posted By: xetmes
Date Posted: January 06, 2005 at 5:24 PM
Dead reackoning just means odometry based navigation. basically that the vehicle will use the speed duration and angle changes to determine the new location of the vehicle through mathmatics. Therefore, as auex stated without the speed sensor the computer cannot determine the speed for a certain duration so the navigation will be wrong. if the unit is all one piece there really isnt much you can do short of opening it and trying to reverse engineer the thing...
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