Page 1 of 4 1234 LastLast
Results 1 to 10 of 40

Thread: USB Car Controller

  1. #1
    Newbie
    Join Date
    Jan 2005
    Posts
    48

    USB Car Controller

    Just wanted to get some feedback for the project im thinking of making

    Basically its a complete Car-Computer interface.
    My Car doesnt have OBD II so i though i would make something for my self (I should be able to im doing a degree in EE!)

    Basically the idea is based around this
    http://www.dlpdesign.com/dlp-2232pbv10.pdf

    This is a USB to microchip interface and comes with source code to reprogram it.

    As standard it allows control of the outputs, reading of voltages from 5 A/D and interfaces with some cheap temperature sensors - DS18S20

    Basically i was planning to add to this a microchip I/O expander to give 16 relay outputs (uses only two i/o pins of above device)

    A RPM monitering function

    A nitrous controller (uses PWM to control flow of nitrous into engine and cuts nitrous if any engine sensors go out of range)

    Another feature that i want to include is servo control to allow the thing to control the sliders of old school style temperature things (mainly coz where i want to put my screen means i have to remove em) and of course it will control the other A/C controls

    Thats it for now im sure i will think of more as i build the thing, maybe a toaster function or something

    The only problem im having at the moment is getting one of these things, there $50 over in the states but 59 here!!. Unfortunatly the company (in the states) i want to buy it from wont take my crappy maestro card!

    SO, watcha think?

  2. #2
    Neither darque nor pervert DarquePervert's Avatar
    Join Date
    Apr 2004
    Location
    Elsewhere
    Posts
    13,950
    You do realize that if you were to have your nitrous boost on when your computer crashes, you're going to burn up your engine....
    Explain that one to the insurance company....

    I'm not saying that the idea isn't cool. It's probably even very doable. Just be aware of the risks involved.
    Have you looked in the FAQ yet?
    How about the Wiki?



    Under normal circumstances, a signature would go here.

  3. #3
    Newbie
    Join Date
    Aug 2004
    Location
    Clarksville, TN US
    Posts
    34
    You could install a relay for safety and cut the nitrous if the PC crashes.
    I didn't turn my back on my country, my country turned it's back on me.

  4. #4
    Newbie
    Join Date
    Jan 2005
    Posts
    48
    Quote Originally Posted by bpierce815
    You could install a relay for safety and cut the nitrous if the PC crashes.
    Oh the computer doesnt control the nitrous, you upload settings to the device and then it does the work, it would be too slow if you were going via the PC, then the circuit or 12v rail would have to fail, in which case everything would stop working

    It also would use only one FET for both nitrous and fuel so if that blows BOTH solenoids would close

  5. #5
    MySQL Error Scouse Monkey's Avatar
    Join Date
    Mar 2004
    Location
    Bristol
    Posts
    9,727
    yeah sounds cool. go for it.

  6. #6
    Registered User
    Join Date
    May 2003
    Posts
    1,736
    I think you are trying to let it do too many things.

    Why not use a seperate dedicated PIC for the nitro? The controls can be time criticals.

  7. #7
    Raw Wave rando's Avatar
    Join Date
    Mar 2004
    Location
    Redondo Beach, CA
    Posts
    1,973
    Moreover, why start with that module? You can just get one of the new PICs with a built-in USB peripheral (18F2455,2550,4455,4550). These even come in 28 and 40 pin DIP packages so they're easy to put on project boards. With the 40 pin variety you'll get oodles of I/O, A/D and timers. You'll also have access to a hardware UART and of course USB. You can download the C18 C compiler from Microchip and you're on your way. They even have free code you can use to implement a bootloader.

    It should easily be able to do everything you want. Of course, it's a not a huge deal to add secondary (cheaper) PICs for important tasks. They can communication with the main controller over any I/O pin.

  8. #8
    Constant Bitrate
    Join Date
    Nov 2004
    Location
    Philippines
    Posts
    119
    forgive my ignorance, i want to confirm if my idea is correct:
    Wouldn't a phidget do this trick? My idea is, i wanted to get a phidget that will control my power windows, door locks and also get input such as temperatures.

  9. #9
    Registered User
    Join Date
    May 2003
    Posts
    1,736
    Oo pwede yun.

  10. #10
    My Village Called 0l33l's Avatar
    Join Date
    Jul 2004
    Location
    Berkeley, CA
    Posts
    10,516
    Quote Originally Posted by execute
    forgive my ignorance, i want to confirm if my idea is correct:
    Wouldn't a phidget do this trick? My idea is, i wanted to get a phidget that will control my power windows, door locks and also get input such as temperatures.
    Cheaper, more inputs and outputs.

    How easy would this be to program in delphi?

Page 1 of 4 1234 LastLast

Similar Threads

  1. Just for laught: Computer and Car
    By MatrixPC in forum Off Topic
    Replies: 20
    Last Post: 01-05-2005, 10:25 PM
  2. Real Time Car tracking now working!
    By Magpie in forum GPS
    Replies: 25
    Last Post: 10-27-2004, 05:08 AM
  3. FS: microtouch USB controller: 4 wire resistive
    By robiewp in forum Classified Archive
    Replies: 0
    Last Post: 05-24-2004, 11:25 PM
  4. Keyless Entry Shutdown Controller
    By Sinorm in forum Power Supplies
    Replies: 2
    Last Post: 04-07-2004, 09:30 PM
  5. Car Stereo Installation Video's for Sale
    By johnram in forum Classified Archive
    Replies: 2
    Last Post: 09-05-2002, 11:27 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •