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Screen hackability? Yup.. - Page 2 — Parallax Forums

Screen hackability? Yup..

24

Comments

  • Oldbitcollector (Jeff)Oldbitcollector (Jeff) Posts: 8,091
    edited 2008-02-05 23:29
    Ok,


    Getting close..

    If I (doing something I shouldn't) put the video signal on the top of the resistor
    given in Mike's diagram, and short the screen for a second causing a reboot
    of the LCD, I get a very nice NTSC image for about a second. (in full color)
    When the chip reboots, it sends an additional video signal to the screen
    causing it to look much like the screen before. In my case, the graphics demo
    goes from color to b/w with a hint of the blue post screen behind it.

    If we can find the signal pin from the chip and kill it we should have a working
    screen.

    I think I'm going to go backwards and see if I can find the signal with my
    monitor.

    OBC

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    New to the Propeller?

    Getting started with the Protoboard? - Propeller Cookbook
    Got an SD card? - PropDOS
    A Living Propeller FAQ - The Propeller Wiki
    (Got the Knowledge? Got a Moment? Add something today!)
  • Oldbitcollector (Jeff)Oldbitcollector (Jeff) Posts: 8,091
    edited 2008-02-05 23:43
    Got it! Will post details soon... You guys will really think my avatar fits when you see what I did. [noparse]:)[/noparse]

    OBC

    Edit:
    Gonna see if I can salvage the amp too..

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    New to the Propeller?

    Getting started with the Protoboard? - Propeller Cookbook
    Got an SD card? - PropDOS
    A Living Propeller FAQ - The Propeller Wiki
    (Got the Knowledge? Got a Moment? Add something today!)

    Post Edited (Oldbitcollector) : 2/5/2008 11:49:20 PM GMT
  • TheWizard65TheWizard65 Posts: 91
    edited 2008-02-05 23:48
    Cool OBC, just in time. I've just orderd mine today. Too bad my first choice was a dud, Thanks Mike Green for your input!!! jumpin.gifyeah.gifhop.gifroll.giffreaked.gifturn.gifsmilewinkgrin.gif


    Can't wait to see this work.

    Post Edited (TheWizard65) : 2/6/2008 12:14:29 AM GMT
  • Mike CookMike Cook Posts: 829
    edited 2008-02-05 23:57
    SWEET!

    I'll get my microscope back out and warm up my iron!

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    Mike
  • bambinobambino Posts: 789
    edited 2008-02-06 01:01
    C,mon OldBit, I'm drooling here!
    Just kidding! Can't wait though!
  • Mike CookMike Cook Posts: 829
    edited 2008-02-06 01:03
    Only 371 left on www.geeks.com @ 7:04 cst 02-05-08!

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    Mike
  • Oldbitcollector (Jeff)Oldbitcollector (Jeff) Posts: 8,091
    edited 2008-02-06 01:04
    Ok, Just finished the page..

    www.warrantyvoid.us/cyberhomedvdplayer.html

    This is a new website I'm still working on. It's all a bit raw, and I haven't reassembled mine yet to show the finished picture, but trust me, it's really pretty. [noparse]:)[/noparse] Yes, the link to the item at geeks (in my page) is an affiliate link, (Not hiding it) Figure the information might as well pay for itself with more hardware to hack.. (Had to really justify this to the wife... [noparse]:)[/noparse]

    I'll add pics of the working unit after I get the plugs soldered in and get it closed up.

    OBC

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    New to the Propeller?

    Getting started with the Protoboard? - Propeller Cookbook
    Got an SD card? - PropDOS
    A Living Propeller FAQ - The Propeller Wiki
    (Got the Knowledge? Got a Moment? Add something today!)
  • Mike CookMike Cook Posts: 829
    edited 2008-02-06 01:10
    Wow, any way of doing this this without removing the entire MI1389QE·chip?

    Did you just un-solder it or just cut it out?

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    Mike

    Post Edited (Mike Cook) : 2/6/2008 1:15:12 AM GMT
  • Oldbitcollector (Jeff)Oldbitcollector (Jeff) Posts: 8,091
    edited 2008-02-06 01:13
    It was the simplest method of removing the signal, and reduced power consumption.

    I told you you were going to be a little shocked by the method..

    Grab a razor knife and remove it... It works.. [noparse]:)[/noparse]

    OBC

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    New to the Propeller?

    Getting started with the Protoboard? - Propeller Cookbook
    Got an SD card? - PropDOS
    A Living Propeller FAQ - The Propeller Wiki
    (Got the Knowledge? Got a Moment? Add something today!)
  • Mike CookMike Cook Posts: 829
    edited 2008-02-06 01:20
    Ok, got the motor assy out, getting the solder braid and the flux!

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    Mike
  • Oldbitcollector (Jeff)Oldbitcollector (Jeff) Posts: 8,091
    edited 2008-02-06 01:24
    Now that you guys are working.. I'm going back to the shop and reassemble mine so I can get some running shots.

    OBC

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    New to the Propeller?

    Getting started with the Protoboard? - Propeller Cookbook
    Got an SD card? - PropDOS
    A Living Propeller FAQ - The Propeller Wiki
    (Got the Knowledge? Got a Moment? Add something today!)
  • bambinobambino Posts: 789
    edited 2008-02-06 01:33
    Dang, I go and finally run down the signal(on pin 14 by the way) come back and you got a whole web page up displaying the hack.
    Please don't enter the propeller contest,( "I need a fighting chance").

    Great work OldBit, Great work!
  • Mike CookMike Cook Posts: 829
    edited 2008-02-06 01:38
    Yup it works!, Thanks OBC



    <EDIT>

    TIP: If you cut out the DVD chip (MI1389QE)·with a razor knife, go back with some solder braid and·flux to clean up!

    </EDIT>

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    Mike

    Post Edited (Mike Cook) : 2/6/2008 2:26:52 AM GMT
    100_1126.jpg
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  • bambinobambino Posts: 789
    edited 2008-02-06 01:40
    Just in case anyone wants to know, The shot below displays where the signal is coming from on the cable. Could save you haveing to run an extra wire up to the screen.
    HiroseCable.jpg
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  • Oldbitcollector (Jeff)Oldbitcollector (Jeff) Posts: 8,091
    edited 2008-02-06 01:41
    Found another good signal location without removing the LCD backpanel.

    The bottom of resistor R61 (near the power plug) also is a good signal point.
    I'll post an update later. Right now I'm going to get mine up and running.


    Edit:

    Page updated with the new information and pictures.

    OBC

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    New to the Propeller?

    Getting started with the Protoboard? - Propeller Cookbook
    Got an SD card? - PropDOS
    A Living Propeller FAQ - The Propeller Wiki
    (Got the Knowledge? Got a Moment? Add something today!)

    Post Edited (Oldbitcollector) : 2/6/2008 2:53:36 AM GMT
  • Oldbitcollector (Jeff)Oldbitcollector (Jeff) Posts: 8,091
    edited 2008-02-06 04:15
    The more I look at this, the more it looks like an "nano" (cut-down) protoboard would
    fit just fine inside the dvd door. Time to start looking over those button controls in the monitor side. The battery is 3.6v, which should be fine for running the propeller chip, drop in the nano, connect the video/audio lines, create a plug for the pda keyboard and you'll be all set.

    (gears rolling for the 2nd one sitting on my workbench. [noparse]:)[/noparse]

    OBC

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    New to the Propeller?

    Getting started with the Protoboard? - Propeller Cookbook
    Got an SD card? - PropDOS
    A Living Propeller FAQ - The Propeller Wiki
    (Got the Knowledge? Got a Moment? Add something today!)

    Post Edited (Oldbitcollector) : 2/6/2008 4:25:31 AM GMT
    dreaming_maybenot.JPG
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  • TheWizard65TheWizard65 Posts: 91
    edited 2008-02-06 10:47
    Sweet Hack OBC, I have 2 coming my way, Just bought them lastnight. I had an Idea to create something like this using plexi glass. Good thing someone made one before I could.
    It's better. freaked.gif
  • RaymanRayman Posts: 14,162
    edited 2008-02-06 13:26
    Be nice to get the keypad inside the bottom part...
  • schillschill Posts: 741
    edited 2008-02-06 14:05
    The link to the device has been removed from the first post?
  • Oldbitcollector (Jeff)Oldbitcollector (Jeff) Posts: 8,091
    edited 2008-02-06 14:07
    Changed to the link to the hack... Everything is there.

    OBC

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    New to the Propeller?

    Getting started with the Protoboard? - Propeller Cookbook
    Got an SD card? - PropDOS
    A Living Propeller FAQ - The Propeller Wiki
    (Got the Knowledge? Got a Moment? Add something today!)
  • BaggersBaggers Posts: 3,019
    edited 2008-02-06 14:24
    Great hack OBC, I liked the demo you were using on the website lol [noparse]:D[/noparse] nice 1.
  • HarleyHarley Posts: 997
    edited 2008-02-06 16:07
    OBC,

    Have you checked for how many char/line and lines you can fit on that screen? Looks to be around 40 char/line by 12 lines or so.

    Don't know how readable it is; when I enlarged view it wasn't very clear. What is the char size in pixels (height by width)?

    Since I have one of those keypads, I can sense that player LCD is quite small. Good job at hacking the unit. Thanks for the view.

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    Harley Shanko
  • RaymanRayman Posts: 14,162
    edited 2008-02-06 17:10
    Are you guys using interlaced or non-interlaced drivers? See any screen flicker?
  • Mike CookMike Cook Posts: 829
    edited 2008-02-06 17:18

    I'm using the 'standard' TV_TEXT object as delivered with the Propeller Tool. I've got a little 'video noise' on my display, but I believe this is due to the non-shielded hook-up wire that I'm currently using. Otherwise the display is crystal clear. @40 x 13 the text is tiny but readable.

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    Mike
  • Oldbitcollector (Jeff)Oldbitcollector (Jeff) Posts: 8,091
    edited 2008-02-06 18:28
    I'm using the AiGeneric 40x24 video driver. (in PropDOS) Everything is a little tiny (expected) but extremely readable.

    OBC

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    New to the Propeller?

    Getting started with the Protoboard? - Propeller Cookbook
    Got an SD card? - PropDOS
    A Living Propeller FAQ - The Propeller Wiki
    (Got the Knowledge? Got a Moment? Add something today!)
  • Oldbitcollector (Jeff)Oldbitcollector (Jeff) Posts: 8,091
    edited 2008-02-07 02:31
    I can't get a tighter shot than this, but this is a shot with a DVD running.
    My camera can't focus as tight as a shot at PropDOS, but I can read it clearly and there is no flicker.

    OBC

    Edit
    Added a shot of propDOS.. My camera just can't focus this close (old), but
    I'd say it's about twice as clear as the picture.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    New to the Propeller?

    Getting started with the Protoboard? - Propeller Cookbook
    Got an SD card? - PropDOS
    A Living Propeller FAQ - The Propeller Wiki
    (Got the Knowledge? Got a Moment? Add something today!)

    Post Edited (Oldbitcollector) : 2/7/2008 2:42:09 AM GMT
    ateam.JPG
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    propdosshot.JPG
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  • RaymanRayman Posts: 14,162
    edited 2008-02-07 02:42
    I wonder how long the battery would last playing an actual mini-dvd movie... All the new portable dvd players seem to advertize their play time. But, not a word in the write up for this thing...
    I think I could DVDShrink a video down to the resolution of this monitor with no noticable quality loss and fit onto a mini-dvd. But, I bet the battery wouldn't last for 2 hours...
  • bambinobambino Posts: 789
    edited 2008-02-07 02:53
    It would be close. I wore out my scooby-Doo flick. Plus showing it off to others, Plus scopeing out the pins. I'm still on my first Charge.
  • bambinobambino Posts: 789
    edited 2008-02-07 02:56
    I'm torn now. I don't know if I should order me a TQFP to put in mine (OOh the waiting on UPS!) or just use my spin stamp(No waiting)
    I already have a board cut and mounted to the sockets where the motor assembly was.
  • Oldbitcollector (Jeff)Oldbitcollector (Jeff) Posts: 8,091
    edited 2008-02-07 03:25
    PICS!! [noparse]:)[/noparse]

    I'm working up to a timed test of both the prop and monitor working off the battery.

    OBC

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    New to the Propeller?

    Getting started with the Protoboard? - Propeller Cookbook
    Got an SD card? - PropDOS
    A Living Propeller FAQ - The Propeller Wiki
    (Got the Knowledge? Got a Moment? Add something today!)
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