InDashPC.org Forum Index InDashPC.org
In Dash Car PC forum
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Alpine touchscreen proto?

 
Post new topic   Reply to topic    InDashPC.org Forum Index -> Protocols
View previous topic :: View next topic  
Author Message
Billy



Joined: 17 Jun 2009
Posts: 4

PostPosted: Wed Jun 17, 2009 1:49 pm    Post subject: Alpine touchscreen proto? Reply with quote

Hi there. I'm now a proud owner of an IVA-W502 from Alpine. After a hour of google I have figured out how to feed RGBs signals from the CarPC into its Nav socket (and can share all the links). However the touchscreen has been described NOWHERE, and I have no idea what it is: RS232, PWM, or something proprietary.
Tomorrow I'll have some oscillograms of this output but... before I start inventing the wheel I'd ask first. Maybe somebody knows?..

Thanks!
Back to top
View user's profile Send private message
Billy



Joined: 17 Jun 2009
Posts: 4

PostPosted: Mon Jun 22, 2009 12:11 pm    Post subject: Reply with quote

Well.

The pin is at +12v and looks pretty much as open collector; having pulled it down to zero via 10k resistor, I see some tens millivolts 3-level signal when touching the panel. That must not be right... looking for a proper condition to test it again. Ideas???
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    InDashPC.org Forum Index -> Protocols All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group