Notices

Installing Data Acq. System

Thread Tools
 
Search this Thread
 
Old 12-29-2015 | 07:38 PM
  #46  
ir_fuel's Avatar
ir_fuel
Drifting
 
Joined: May 2010
Posts: 2,168
Likes: 5
From: Belgium
Default

Originally Posted by kb58
That dash warning light... when that goes on, your last thoughts must be, "My God, it's full of stars."
When that goes on he knows his bank account will soon be the same color
Old 12-29-2015 | 07:41 PM
  #47  
ir_fuel's Avatar
ir_fuel
Drifting
 
Joined: May 2010
Posts: 2,168
Likes: 5
From: Belgium
Default

Originally Posted by jwasilko
You might be able to use http://www.ironcanyonmotorsports.com/icm-fuel-sender/ to get fuel level into the AiM Dash. It's what I use on the Miata....
Interesting!

Originally Posted by mglobe
I use this also. Works great. I get a calibrated fuel level reading, and I've set up a warning light that flashes when I get down below 1 gallon.
Did you install this on your Porsche? Is it an easy install (as in, plug and play) or does it require cutting cables and soldering?
Old 12-29-2015 | 08:05 PM
  #48  
Mahler9th's Avatar
Mahler9th
Thread Starter
Three Wheelin'
 
Joined: Nov 2004
Posts: 1,666
Likes: 174
From: Fremont, CA
Default

The amber warning light isn't connected to anything. It was a placeholder for an oil temp warning in my last dash set up, but I never used it. When I made the mockup Gdash panel I just kept it. The final carbon fiber panel will probably not use it. The blue alternator light has two functions. Its resistance is necessary for the 911 charging circuit. And it also provides a warning if the charging voltage drops low enough which as 911 folks know can mean a charging problem or a charging problem based on a belt situation. I will probably keep the blue light for this purpose even though it will be redundant with the AIM alarm I will set up.

The large oil pressure warning light is a placebo-- my engine builder tells me that many/most failure modes will occur so fast that by the time the oil pressure drops to the switch warning threshold, it will already be too late. The light went in to help my co-driver (wife) feel more comfortable. It will probably not make the final cut when I decide on my final dash configuration.
Old 12-29-2015 | 08:13 PM
  #49  
Mahler9th's Avatar
Mahler9th
Thread Starter
Three Wheelin'
 
Joined: Nov 2004
Posts: 1,666
Likes: 174
From: Fremont, CA
Default

I created two custom sensors for the brake on/off switch. This is a 0 or ~+12 VDC signal that comes through the mechanical brake light switch. So when the lights go on, the same voltage goes to the EVO4.

For years I have run a red brake light in the video camera FOV along with a green WOT light, which is wired directly to a microswitch mounted on the throttle body. Pretty effective data logging system for determining location of brake application and achievement of WOT when reviewing video.

Not sure which of the custom sensors I will use for logging brake on/off. I think the two-point LUT should work fine, but I am a logging newbie.

Since brake pressure costs about $200 to implement, I will hold off until I can see a clear benefit compared to brake on/off. Again, this is for my application-- others may have different needs.
Attached Images   
Old 12-29-2015 | 08:18 PM
  #50  
Mahler9th's Avatar
Mahler9th
Thread Starter
Three Wheelin'
 
Joined: Nov 2004
Posts: 1,666
Likes: 174
From: Fremont, CA
Default

Ahh for the sake of completeness I should note that the picture of my dash also shows how I mounted a USB jack for EVO4 I/O. This is just a cheap panel mount USB connector cable with gender bender-- I think all of $15-20. You can see it just past the two switches to the left of the factory GT3 RSR quick release.
Old 12-29-2015 | 08:31 PM
  #51  
linzman's Avatar
linzman
Rennlist Member
 
Joined: Jul 2009
Posts: 1,446
Likes: 96
From: NJ
Default

Originally Posted by Mahler9th
Ahh for the sake of completeness I should note that the picture of my dash also shows how I mounted a USB jack for EVO4 I/O. This is just a cheap panel mount USB connector cable with gender bender-- I think all of $15-20. You can see it just past the two switches to the left of the factory GT3 RSR quick release.
I want this. More details please.
Old 12-29-2015 | 09:03 PM
  #52  
Caddell's Avatar
Caddell
Instructor
 
Joined: Dec 2006
Posts: 143
Likes: 0
From: Graham, WA
Default

Mahler9th,

I might be missing something but why even create the custom sensor? You can gather and store the actual signal and also create an 'event' that triggers a LED (or multiple LED's) on the Gdash at anything greater than 2.0 volts or whatever value you choose.
Old 12-29-2015 | 09:19 PM
  #53  
ProCoach's Avatar
ProCoach
Rennlist
Basic Site Sponsor
 
Joined: Jun 2008
Posts: 19,273
Likes: 3,473
From: Durham, NC and Virginia International Raceway
Default

Originally Posted by Caddell
Mahler9th,

I might be missing something but why even create the custom sensor? You can gather and store the actual signal and also create an 'event' that triggers a LED (or multiple LED's) on the Gdash at anything greater than 2.0 volts or whatever value you choose.
Roger, wouldn't you want to make a custom sensor so you could actuate a "Brake Switch" channel to illuminate the red bar on the SmartyCam HD (to come)?

Sure, you could make a logged input to trigger an alarm, but the Smarty wouldn't be able to assign it to an icon on the video.
__________________
-Peter Krause
www.peterkrause.net
www.gofasternow.com
"Combining the Art and Science of Driving Fast!"
Specializing in Professional, Private Driver Performance Evaluation and Optimization
Consultation Available Remotely and at VIRginia International Raceway






















Old 12-29-2015 | 09:25 PM
  #54  
Matt Romanowski's Avatar
Matt Romanowski
Rennlist Hoonigan
which cost no drachmas
Lifetime Rennlist
Member


Rennlist
Site Sponsor
 
Joined: Dec 2001
Posts: 12,741
Likes: 1,037
From: Manchester, NH
Default

For the USB, AiM makes a great weatherproof connecter. It ships with all MXL2, MXS, and MXG. It's available separately for a reasonable price too.
Old 12-29-2015 | 09:26 PM
  #55  
Mahler9th's Avatar
Mahler9th
Thread Starter
Three Wheelin'
 
Joined: Nov 2004
Posts: 1,666
Likes: 174
From: Fremont, CA
Default

LIFO

I know how to learn and teach by noting where brake initiation occurs.

Since I bought an EVO4/GDASH and have a channel available, I want to log braking events to perhaps later display on video using Race Render or similar. May even look at the "squiggly line" data in RS2.

I have easy access to the brake light signal in my custom wired 911 race car. It is nominally +12 VDC, and comes through a stock 911 mechanical switch. If I understand the guidance I have received from experts, I need to set up a custom sensor in RS so that when the "on" signal hits the EVO4, it interprets that signal as 5 volts. If I have that wrong, it is despite the guidance I have received.

I am not sure the on voltage will always be +12 VDC so I want the brake on sigal that is logged to be anything over 1 volt or so in case there is some kind of noise or sampling error which must be taken into account.

I am keeping my "brakes on" dash light which is also wired to my mechanical switch. It is in the camera FOV so I can see brake initiation on an ongoing basis without messing with squiggly lines or other forms of data analysis.

Last edited by Mahler9th; 12-30-2015 at 12:42 AM.
Old 12-29-2015 | 09:29 PM
  #56  
Mahler9th's Avatar
Mahler9th
Thread Starter
Three Wheelin'
 
Joined: Nov 2004
Posts: 1,666
Likes: 174
From: Fremont, CA
Default

For the USB panel mounted data I/O I bought these items:


http://www.cablestogo.com/product/28...a-female-cable

and

http://www.monoprice.com/Product?p_i...FcZbfgodwe4Jlw

Regarding the latter, I mistakenly said gender bender in my earlier post. What I needed and bought was a female-to-female coupler.

These items were inexpensive and easy to install.
Old 12-29-2015 | 09:31 PM
  #57  
Mahler9th's Avatar
Mahler9th
Thread Starter
Three Wheelin'
 
Joined: Nov 2004
Posts: 1,666
Likes: 174
From: Fremont, CA
Default

Don't need weatherproof USB I/O here in Norcal.

If I later decide I want to protect the I/O, I can always use a piece of electrical tape. More budget for tires and race fuel.
Old 12-29-2015 | 10:12 PM
  #58  
linzman's Avatar
linzman
Rennlist Member
 
Joined: Jul 2009
Posts: 1,446
Likes: 96
From: NJ
Default

Originally Posted by Matt Romanowski
For the USB, AiM makes a great weatherproof connecter. It ships with all MXL2, MXS, and MXG. It's available separately for a reasonable price too.
That goes with the Evo4? I know there's a can extension cable,
Old 12-29-2015 | 10:25 PM
  #59  
ProCoach's Avatar
ProCoach
Rennlist
Basic Site Sponsor
 
Joined: Jun 2008
Posts: 19,273
Likes: 3,473
From: Durham, NC and Virginia International Raceway
Default

Originally Posted by linzman
That goes with the Evo4? I know there's a can extension cable,
Nope, not for the EVO4. The cable that comes with the MXL2, MXS and MXG has a 719 plastic connector on the end of it. The earlier (better) and larger USB bulkhead connector did, too.

Use Mike's setup.

Or this:
Amazon.com: kenable USB 3.0 Panel Mount Female A Socket to A Female Cable Adapter 15cm (~6 inch): Electronics Amazon.com: kenable USB 3.0 Panel Mount Female A Socket to A Female Cable Adapter 15cm (~6 inch): Electronics

Plus this:
Amazon.com: Superspeed USB 3.0 Type A Male to Type A Male 24/28AWG Cable 6 Feet, Blue: Electronics Amazon.com: Superspeed USB 3.0 Type A Male to Type A Male 24/28AWG Cable 6 Feet, Blue: Electronics
Old 12-29-2015 | 10:53 PM
  #60  
mglobe's Avatar
mglobe
The Penguin King
Rennlist Member
 
Joined: Apr 2006
Posts: 9,839
Likes: 120
From: Houston
Default

Originally Posted by ir_fuel
Interesting!



Did you install this on your Porsche? Is it an easy install (as in, plug and play) or does it require cutting cables and soldering?
Sorry, I should have provided more info to make my post actually useful. :-(. I installed it in my Miata. I've not researched how to do it in a Porsche. But having a calibrated fuel level and a warning light is great if you can make it work.


Quick Reply: Installing Data Acq. System



All times are GMT -3. The time now is 06:30 PM.