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Guide Make your own USB LCD controller!

Discussion in 'Modding' started by ch424, 23 Jun 2006.

  1. vaderag

    vaderag I know what a Dremel is...

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    Nice mate - I agree, the buzzer is a bit of a wast of time. Does the knob still go on that?
     
  2. Wayneeboy

    Wayneeboy What's a Dremel?

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  3. Hazar

    Hazar What's a Dremel?

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    Its a very good project, good work :)

    Can i have the source code of the project, please?
    My mail address is: dogukanhaz#at#gmail.com
    (sorry for my poor English)

    Thanks
    Hazar
     
  4. Brianmy

    Brianmy What's a Dremel?

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    I am having problems getting my pic programmed. I am using winpic 800 and this programmer http://www.instructables.com/id/EWF5MO717GEWT14B3B/ .
    I am using the firmware at the beginng of this thread along with the settings posted there too. The chip get up to 98% programmed and then gives me a verifying address 0x00000 error. I have never done any pic programming before so any help would be greatly appreciated.

    Thanks
     
  5. peowyong

    peowyong PeowYong

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    may i know wut is BL+ (pad) , BL- (pad), and RV2 4k7 Preset??

    edit:found out already... but can i just leave BL+ and B- like that?
    means not connecting to anything but directly to the LCD itself??
    Where can i get the PIC 18f2550 and shipped it to Malaysia?
    i cant find it here...
    and about the rotary encoder, is it ok if i dont use it?

    can i have the circuit diagram of the controller with just the simplest function (just to enable the LCD to be able to communicate with LCD Smartie and without additional things like rotary encoder, buzzer and other irrelevant things?)

    i m not that pro in these, so i dunno which component can be removed..

    thanks .. :)
     
    Last edited: 22 Aug 2007
  6. HYTEC

    HYTEC What's a Dremel?

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    I have designed a board with ExpressPCB it is two boards on one. For $51 www.expresspcb.com will make three boards and you will end up with six. I'm just not sure how to post a file.

    I added a 5v pin for the encoder so you can use an optical encoder if you want to. I also added an extra header for the usb to connect it directly to your motherboard.

    If anyone could tell me how to post the file I will. I would also like someone to double check my work (4 eyes are better than 2) before I order a few boards.
     
  7. ghrenig

    ghrenig What's a Dremel?

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    If you cannot find long pin headers. I have use tinned copper wire. Just make sure you stretch it first by useing a set of pliers or vice and pulling the reel so that it is straigtht. Then cut suitable lengths as required. I tend to solder the outer two items first and then thread the other items as required.
     
  8. gsila

    gsila What's a Dremel?

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    i have one question: can you shift betwen screens without encoder
    Sorry about my English
     
  9. Latvian3Dman

    Latvian3Dman What's a Dremel?

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    Buttons?

    Hello again guys!
    Right now i am implementing this USB device with 4x20 OLED screen into my HTPC (Home Theater PC) project, and i have question (maybe stupid one):
    Is there a way to somehow attach couple of buttons instead of rotary encoder. Like 4 buttons for play, stop, forward back? Excuse me if i am way off with this idea, i am not experienced with how rotary encoders technicaly work.
    Thanks in advance for any suggestions and ideas! :)
     
  10. dan-ere-07

    dan-ere-07 What's a Dremel?

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    is it possible to make a usb controller for a graphic display?
     
  11. ch424

    ch424 Design Warrior

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    Hazar: will send it in a minute

    Brianmy: Read the thread, someone else had the same problem and got it fixed.

    peowyong - BL+ and BL- are for the BackLight in the LCD. You can buy the PIC18F2550 direct from Microchip at http://buy.microchip.com Yes, you can ignore the rotary encoder.


    HYTEC - thanks! I'll host it for you - reply to the email I sent.

    gsila - yes, you can, but it has to be on a timer in the software, or using buttons:

    Latvian3Dman: yes, you can use buttons instead. Use this firmware instead, and just use the common ground plus three signals, one for each of the buttons. Sorry, it only gives 3 buttons not 4 though.

    dan-ere-07: No, sorry.
     
  12. HYTEC

    HYTEC What's a Dremel?

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    CH424-- THANKS Email sent

    Jasen
     
  13. ch424

    ch424 Design Warrior

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  14. dan-ere-07

    dan-ere-07 What's a Dremel?

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    oh, thats my idea gone hehe
     
  15. dan-ere-07

    dan-ere-07 What's a Dremel?

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    ok then is it possible to have inputs from temp probes
    or do you have to have them plugges into the mobo and have the temps displayed through the program
     
  16. Latvian3Dman

    Latvian3Dman What's a Dremel?

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    ch242 - thank You about buttons option. I wonder, cant some of those general purpose outputs be converted to inputs? Or LCDSmartie will not be able to use those anyway? More buttons could be sweet :)
    Thanks anyway!
     
  17. gsila

    gsila What's a Dremel?

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    ch242 can you control a backlight with this controller or i need a trimmer
    (my English sux)
     
    Last edited: 1 Sep 2007
  18. wewe

    wewe What's a Dremel?

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    this looks interesting, did you do the schmatics yourself?
     
  19. Latvian3Dman

    Latvian3Dman What's a Dremel?

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    spectrum slow?

    Another thing: winamp plugin spectrum analyzer runs very slow. I have 4x20 OLED screen, so there is virtualy no screen inertia, problem is something else. I wonder, is spectrum slow because USB addon, or directly parallel connection to LPT gives the same slow spectrum (can not test direct to LPT myself right now)?
    Would appreciate other people experiences about this issue and maybe some suggestions?
    Thank You!
     
  20. simon_stz

    simon_stz What's a Dremel?

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    For Backlight control, try this:

    [​IMG]

    Use RB7 instead "PIN LPT"
     
    Last edited: 5 Sep 2007
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