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Thread: DennisK power question

  1. #1
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    DennisK power question

    Hey guys. I just got my DennisK kit (complete with touchscreen controller, etc). I also purchased the serial cable from Meatballman. I was just curious on what you guys did to power it. There is a barrel style plug on the digital view adapter (?). There is also a barrel plug on the serial cable going to the microtouch controller.

    So back to my original question, how did you guys power yours? Did you just buy some barrel plugs from Radioshack and splice in 12V (or 5V in the serial cable's case) from your computer's PS? What would be the best way to approach it? Reading the documentation, it looks like the digital view takes 12V and the microtouch controller takes 5V, is this correct?

    One more thing -- does anyone have a picture of everything assembled (yet still in pieces -- not enclosed). I'd just like to double check my wires before I power it up.

    Thanks,
    Cy

  2. #2
    FLAC mp3z24's Avatar
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    i used a radio shack plug for each board... you can get the generic tips and just solder leads onto them.

    the vga controller takes 12v on the pin and gnd on the barrel.
    if you have the correct touchscreen cable, then you can use a barrel plug for that too. but that one is 5v on the barrel and gnd on the pin. this info is buried in the forum somewhere.

    i used an industrial ac-dc power supply that i have for bench testing, but you can use power from your computer power supply if you want. the screen doesnt pull that much power.

    also, im not sure if you have done this yet... but you might have to fix the hirose cable that DennisK sent you. the factory cable is wired slightly wrong. essentially, the controln board is sending out data on 8-bits per color. the sharp screen in the kit is only 4-bits per color. you need to move some wires on the connectors so that the screen is getting the "higher numbers bits" for each color. DO A SEARCH ON THIS. there is a very good explaination of what you need to do... there is also a link to the datasheets and the connection pinouts on the board here. i know because i posted them several times. if you dont do the color fix, the screen will look like crap and your gonna get really ****ed that you spent money on something that looks bad.

    ~mike
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  3. #3
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    I've been reading the boards since you guys figured out the color fix, so I know all about that. Trust me, I searched for everything dealing with DennisK before I posted. I was just curious on your guys' methods for powering the screen.

    I appreciate your info Mike, thanks a lot.

  4. #4
    FLAC mp3z24's Avatar
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    im glad to help...

    as for powering it in the car... i have 2 sproggy supplies built so i might put on in the dash and one in the trunk/boot. that way i can run power to each area seperately and give myself some flexibility on switching things on and off... or i might just run power wires up from the supply that is in the computer. i have yet to decide on what im doing in the end... im taking an ultra slow route to getting this done!!!

    ~Mike
    Single Member of the "1000 Post and No MP3 Car" Club
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  5. #5
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    wanna build me a sproggy?

  6. #6
    FLAC mp3z24's Avatar
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    Originally posted by inline4
    wanna build me a sproggy?
    if you send me all the parts i can put it together for ya.... for a small fee of course.

    if you need parts, i *might* be able to get some for ya, but i cant guarantee anything...it would be a lot easier for you to pick up parts for yourself

    ~mike
    Single Member of the "1000 Post and No MP3 Car" Club
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  7. #7
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    Argh. I just picked up the DC power plugs, and they're not what I thought they'd be.

    After unscrewing the plastic cover, they have a clamp sticking up (which I assume holds the wire) and a terminal at the bottom (which I assume I'll solder stuff to).

    Now when you said that the VGA controller takes 12V on the pin and ground on the barrel... how exactly would I solder that? I'm assuming I'll connect the 12V wire to the terminal on the DC plug.. but where does the ground go? And for the 5V on the barrel and ground on the pin for the touchscreen controller... how would that work?

    I really appreciate the help Mike.

    Thanks

  8. #8
    FLAC mp3z24's Avatar
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    i think you have gotten a little confused

    what i bought is something similar to this...radioshack adaptaplug
    if you cant see the URL the part number is 273-1723 at radioshack. this one that i have shown is probably not the right plug/barrel size. i have just shown it for an example. you will need to bring in the controller card and the serial cable in order to size the plugs you need for each component. they have "tester" plugs that you can put in the power hole... to see what size you need.

    there are 2 pins that you have to solder leads onto...one leads to the hole in the middle, that will be the "pin" connection on the controller card. the other pin on the small plug will be for the barrel connection. you can easily test to see which one goes where by using a multimeter, test the resistance between one pin and the barrel... if there is high resistance then you have the wrong pin. if there is low resistance then you have the pin that corresponds to the barrel.

    i hope you dont get too confuesed by my using the term pin to describe the connections on the adaptaplug and the pin on the controller card.

    ~mike

    edit... you can also use the radioshack 273-1743 if you dont want to solder to the pins... but i would recommens that you super glue the outsides together (not the pins) so that it cannot come apart and be put together incorrectly....
    Single Member of the "1000 Post and No MP3 Car" Club
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  9. #9
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    Nope, it was the right thing and I figured it out shortly after posting.

    LCD works great when I shine a flashlight through it. I don't have the OSD controls, so I'm trying to figure out how to get it to run without them. I've read that you just have to short CNC1's 1-2. CNC1 is where I'm assuming the OSD plugs into. I tried fitting a jumper, but the pins were too widely spaced. So I ran a wire from one to the other and the backlight still didn't pop on.

    Suggestions? Going to re-read some of the posts about it again.

  10. #10
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    Originally posted by Cyanide
    Nope, it was the right thing and I figured it out shortly after posting.

    LCD works great when I shine a flashlight through it. I don't have the OSD controls, so I'm trying to figure out how to get it to run without them. I've read that you just have to short CNC1's 1-2. CNC1 is where I'm assuming the OSD plugs into. I tried fitting a jumper, but the pins were too widely spaced. So I ran a wire from one to the other and the backlight still didn't pop on.

    Suggestions? Going to re-read some of the posts about it again.

    its pin 3 and 6 on CNC1 and i shorted JA6 so its always on!!!

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