5V-12V Power source? - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 05-10-2013, 06:47 AM
Compression Ignition Addict
 

Join Date: Nov 2011
Location: New Boston
Posts: 789
Thanks: 0
Thanked 2 Times in 2 Posts
Feedback Score: 2 reviews
5V-12V Power source?

Hey guys, I'm looking for a power source to work with a 'carputer' i'm building.. I have the controller to handle start ups and shut downs, but I need to tie into a power source that comes on with the key, and stays on through cranking then shuts off once the key is off..

Everything I've found kills power when being cranked, which in my case, would kill my boot up.. soo any ideas?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 05-10-2013, 06:57 AM
Compression Ignition Addict
 

Join Date: Feb 2008
Posts: 8,290
Thanks: 69
Thanked 199 Times in 189 Posts
Feedback Score: 0 reviews
why don't u use a constant hot and switch it ? then you could use it anytime

truck on or off ?

there is bound to be a few circuits that don't shut off with a key to crank
but I am not sure where ?,, I do believe the OBD port stays energized but keys off
Reply With Quote Quick reply to this message
  #3  
Old 05-10-2013, 07:17 AM
Compression Ignition Addict
 

Join Date: Nov 2011
Location: New Boston
Posts: 789
Thanks: 0
Thanked 2 Times in 2 Posts
Feedback Score: 2 reviews
Quote:
Originally Posted by ZMANN View Post
why don't u use a constant hot and switch it ? then you could use it anytime

truck on or off ?

there is bound to be a few circuits that don't shut off with a key to crank
but I am not sure where ?,, I do believe the OBD port stays energized but keys off
I'm looking for something that will come on when I turn the key and am waiting for the WTS light (during that time, computer starts booting), then stay on while I crank.. I looked at the radio, but it shuts off for a brief moment while starting..

I've thought about the switch, but it would be my luck that I would forget to turn it off and next morning I come out to dead batteries..

Maybe I can find a way that when I turn my key on, it triggers a relay and runs off a 12v constant on source, and when power is shut off to that relay, it triggers the hibernate/shut down..
Reply With Quote Quick reply to this message
  #4  
Old 05-10-2013, 07:25 AM
Premium Member

 

Join Date: Jun 2012
Location: Northeast OK
Posts: 359
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
You need to wire a latching relay system. I believe there is a wiring diagram over at the12volt.com I would draw one if I wasn't on my phone.

Sent from AutoGuide.com Free App
Reply With Quote Quick reply to this message
  #5  
Old 05-10-2013, 07:27 AM
Compression Ignition Addict
 

Join Date: Feb 2008
Posts: 8,290
Thanks: 69
Thanked 199 Times in 189 Posts
Feedback Score: 0 reviews
well probe the OBD?
and also a lot of years the cig lighter is the same circuit as the OBD power so you can see if it times out upon crank

there are plenty of workarounds for the issue but I am sure you can find a power source to meet your need and keep it simple
Reply With Quote Quick reply to this message
  #6  
Old 05-10-2013, 07:44 AM
Compression Ignition Addict
 

Join Date: Nov 2011
Location: New Boston
Posts: 789
Thanks: 0
Thanked 2 Times in 2 Posts
Feedback Score: 2 reviews
Thanks y'all.

I'll look into the latching relay system and look into the OBD port. I'll be using the OBD port after the install because i'll have AE running too, so I can just switch windows and run full diagnostics on the truck.
Reply With Quote Quick reply to this message
  #7  
Old 05-10-2013, 08:38 AM
Compression Ignition Addict
 

Join Date: Aug 2010
Posts: 1,854
Thanks: 0
Thanked 18 Times in 18 Posts
Feedback Score: 0 reviews
LM7805

https://www.google.com/search?q=LM78...w=1024&bih=629

radio Shack.
Reply With Quote Quick reply to this message
  #8  
Old 05-10-2013, 09:04 AM
Compression Ignition Addict
 

Join Date: Feb 2008
Posts: 8,290
Thanks: 69
Thanked 199 Times in 189 Posts
Feedback Score: 0 reviews
remember A/E highly suggest that you do not charge your computer while running diagnostics with the A/E device

they even have pics of a BBQ hardware device

I an not sure this would apply to your method of charging unless your running an inverter but that would be in efficient anyway
Reply With Quote Quick reply to this message
  #9  
Old 05-10-2013, 09:06 AM
Compression Ignition Addict
 

Join Date: Feb 2008
Posts: 8,290
Thanks: 69
Thanked 199 Times in 189 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by timmyboy76 View Post
how does a regulator keep power during the crank cycle ??
Reply With Quote Quick reply to this message
  #10  
Old 05-10-2013, 11:26 AM
Compression Ignition Addict
 

Join Date: Nov 2011
Location: New Boston
Posts: 789
Thanks: 0
Thanked 2 Times in 2 Posts
Feedback Score: 2 reviews
Quote:
Originally Posted by timmyboy76 View Post
Yeah, I'm not quiet sure where you're getting at with that? maybe a little better explanation..?

Quote:
Originally Posted by ZMANN View Post
remember A/E highly suggest that you do not charge your computer while running diagnostics with the A/E device

they even have pics of a BBQ hardware device

I an not sure this would apply to your method of charging unless your running an inverter but that would be in efficient anyway
I wouldn't necessarily be charging, it would be powered to run the computer, like the battery does for a laptop, and a power supply does on the desktop computers.. I don't see how power used to run the computer system would fry anything while using AE.

The micro-ITX board i'm using is a low power consumption board, which is why its able to run off of 5v-12v..

I haven't found anything done on a superduty diesel, so it's hard to say what exactly will happen, although i've found a lot of build info for cars..
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 01:12 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors