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2016 CrewMax Video Mods - MultiCams and iPhone Video without WiFi

Discussion in 'Audio & Video' started by TundraTex, Sep 25, 2016.

  1. Sep 25, 2016 at 5:18 PM
    #1
    TundraTex

    TundraTex [OP] New Member

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    I'm still in the midst of my Audio system mods, but I'm already thinking about the next mod...Video. I want to be able to display video from my iPad or iPhone on my Navi Display - and I want to be able to do it without wiFi tethering. I also want "anytime" rear camera video. I think I'll also wire up the option for front camera video since seeing over that huge hood and properly judging bumber-to-obstacle distance can be difficult. So a front camera has been added to the mod list.

    I haven't worked out the entire solution yet, but step one is complete; acquire the Apple Digital AV (HDMI) Adapter. 49 bucks at your local Apple store. Tested it out this evening, I can watch YouTube or any other video signal being displayed on my phone on my TV.

    IMG_2121.jpg

    I still need to track down the schematic for the rear panel of the Head Unit. Anybody have this??? I don't believe a vehicle motion defeat will be needed since the backup video already works while the vehicle is in motion. I just need to know the right pins to tap into for component audio and video and then run the various video feeds through a selector switch in the cab.

    More to come...
     
    Last edited: Sep 25, 2016
  2. Sep 25, 2016 at 5:55 PM
    #2
    Sean266

    Sean266 #ThinBlueLine Staff Member

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    :popcorn:
     
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  3. Sep 25, 2016 at 8:34 PM
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    BB Stacker

    BB Stacker New Member

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  4. Sep 26, 2016 at 5:28 AM
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    Sgt.Argueta

    Sgt.Argueta New Member

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    I'm interested. Following
     
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  5. Sep 29, 2016 at 10:11 PM
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    TundraTex

    TundraTex [OP] New Member

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    OK... I've finished the first draft design/schematic and sourced all the parts. I need to see if I can find some alternate suppliers on a few items, but at least I have a source for everything I'll need.

    Here's the current functionality:
    1. Baseline design assumption: don't cut into factory harnesses. I'll use two adapter harnesses (J135 and J136) to keep all the original wiring pristine.
    2. Three video inputs; Rear cam, Front Cam, and iPad/iPhone.
    3. One switch to select Front or Rear Cam on demand, a second switch to turn on/off iPad Video/Audio (Alternate thought is a single three-position rotary switch)
    4. iPad Video has priority over Front/Rear select, but shifting into reverse will always override any video switch selection and show the backup cam video.
    5. Selecting iPad also routes iPad audio into the aux input path, dis-connecting the factory aux input jack while selected. I believe this will activate the aux audio option on the HU audio source screen. However, this may have to be changed a bit because I just realized that unless the HU logic automatically selects the aux audio when it detects a signal, the cam video screen will prevent access to any of the other HU Menus. Hmm, well that's why they call it R&D.
    6. I'm also thinking about adding a Digital Video Recorder for the front cam... That would be an easy add after the fact.
    I'm going to think on this a bit. I'm not sure if I like the current design hierarchy.

    What do y'all think? I'm interested in how others would want these functions to operate.
     
  6. Sep 30, 2016 at 3:00 AM
    #6
    Blankcheese

    Blankcheese New Member

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  7. Oct 6, 2016 at 8:13 PM
    #7
    TundraTex

    TundraTex [OP] New Member

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    Progress!

    Working on Rev. 2 of the design. Pardon the technical details, they might be a little hard to follow without the schematic, but I'm kinda using this thread as my research notebook and the schematic is still in work.

    I'm learning more about the HU function and still have some theories that I need to test. If it turns out like I think it will, the mod will be easier/cheaper than my Rev. 1 design. I made a measurement tonight that confirmed one of my suspicions; the rear camera is always powered on. I'm guessing this was designed to keep the camera "warmed up" at all times; preventing any power-up delays to the video feed when Reverse is selected. What this also tells me is that once the mod is done, there should be no problems monitoring the rear feed anytime for as long as desired... no need to worry about over-heating the cam.

    There is a 4-pin connector feeding the tailgate camera at a harness junction (XR1) under the bed just forward of the rear bumper. From my measurements, I found the camera is powered by 6 volts coming from HU J136, Pin 11. XR1, Pin 2 indicates 6 volts in both Park and Reverse. So the camera is always on and the 12V reverse discrete (HU, J135, Pin 2) is used to activate the video display when Reverse is selected. This is an important detail because it means I don't have to control the reverse cam power in my "anytime" video mod. I simply need to provide the 12v reverse discrete to the HU! I think this means I'll ultimately be able to get the 3 video feeds I want using a simple $2 relay rather than the $30 three-way video switch that was in my Rev.1 design. Time will tell.
     
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  8. Oct 28, 2016 at 6:05 PM
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    TundraTex

    TundraTex [OP] New Member

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    OK, I've finalized part of my Video Mod design. I've been researching the Entune HU and I believe I've finally got it all figured out. My video mod will now be accomplished in two parts. I call my first mod FRAC, or Front/Rear Anytime Camera. It utilizes a SPDT (on-off-on) rocker switch to select the Front or Rear Camera. Maybe something like this...
    Cam Switch.jpg

    The camera display, when selected, will override all other Entune HU display functions but the HU will continue with it's normal audio function (just like having the gear selector in Reverse). If the Forward camera happens to be on and the shifter is placed in reverse, the reverse camera video will override the forward until the shifter is moved out of reverse.

    Here's my FRAC design schematic:

    FRAC.jpg

    I was able to purchase Jumper harnesses for both J135 and J136, so there will be no cutting into the factory harnesses. I won't be installing the mod for a week or two because there other projects lined up in the way, but it's good to have the design complete and all the parts in hand. I can now start wiring up the jumper harness mods.
     
    Last edited: Oct 31, 2016
  9. Oct 28, 2016 at 6:15 PM
    #9
    TundraTex

    TundraTex [OP] New Member

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    My second Mod will send any Audio/Video feed from my iPhone or iPad to the Entune HU. Selection of this function will be through the Entune on-screen Source select menu. I haven't drawn up this mod yet, but it's pretty straighforward so I'll be working on it soon.
     
  10. Oct 28, 2016 at 7:32 PM
    #10
    TNTundra08

    TNTundra08 New Member

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    3/1 lift. 20x9 Method standards, machine face. 305/55/20 nitto trail grapplers
    i would be super interested in the "FRAC" setup. I would assume you'd put an override so no matter what position the button is in, putting it into reverse shows back up camera?
    That would be awesome.
    I wonder where i can mount a front camera to be super inconspicuous...
     
  11. Oct 28, 2016 at 7:42 PM
    #11
    BRNG ITT

    BRNG ITT New Member

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    Is this what you need? Not sure if you found it yet or not.
     

    Attached Files:

  12. Oct 28, 2016 at 8:48 PM
    #12
    TundraTex

    TundraTex [OP] New Member

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    Yes as I stated above; "If the Forward camera happens to be on and the shifter is placed in reverse, the reverse camera video will override the forward until the shifter is moved out of reverse."

    As the schematic shows, the 12 Volt Reverse discrete is connected through D2 in parallell to the video selector switch. So when you shift into reverse the switching relay coils will energize no matter what position the video selector switch is in; routing the rear camera video to the HU via J136.

    Here's the camera I bought... 30 bucks on Amazon...Frontcam.jpg
     
    Last edited: Oct 28, 2016
    PMG likes this.
  13. Oct 28, 2016 at 10:18 PM
    #13
    BB Stacker

    BB Stacker New Member

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    I am impressed!
     
  14. Nov 13, 2016 at 8:50 PM
    #14
    TundraTex

    TundraTex [OP] New Member

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    Finished my Audio mods today, so I can start focusing on the FRAC mod. I have gethered most of the components I'll need. I just need to choose/buy the camera select rocker switch and the Video in-Motion (VIM) bypass switch.

    Here's my pile o' stuff so far... fun times ahead!
    IMG_2233.jpg
     
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