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motorcycle CDI

Discussion in 'General Electronics Chat' started by an2, Jan 16, 2007.

  1. an2

    an2 New Member

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    i've found this schematic circuit... but the problem is..idunno how to read it...:confused: can some one help me... what the partlist, and how to construct this device...


    [​IMG]

    :confused: :confused: :confused: :confused: :confused:
     
    Last edited: Jan 17, 2007
  2. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    The 16F84 is a standard old PIC, you need a PIC programmer to program it - try reading the 'sticky' in the micro-controller forum.

    Presumably you have the code to program in the chip?.

    What does the RS232 interface allow you to do?, the 16F84 has 64 bytes of non-volatile memory, perhaps it's for storing parameters there to alter preformance?.
     
  3. an2

    an2 New Member

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    yes, i have the .hex file.. also the .asm of the CDI.. but need to build th PIC programmer hardware first... i've found the simplest Pic programmer in the net.. (if you have some other way please let me know)

    is it hard to do this device?? i really2 zero about electronic...
     
  4. dave

    Dave New Member

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  5. kchriste

    kchriste New Member Forum Supporter

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    You should start with a simpler circuit first if you cannot read a schematic. For starters, checkout these links to help you learn how to read schematics:
    http://www.mitedu.freeserve.co.uk/Prac/symbol.htm
    http://www.mitedu.freeserve.co.uk/Prac/readdiag.htm
     
  6. an2

    an2 New Member

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    thanks bro!...
     
  7. Sig239

    Sig239 Member

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    What Schematics??

    uuuuhhh Is it just me or are there no schematics in this thread:confused::confused::confused:
     
  8. an2

    an2 New Member

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    missing links... sorry.. :eek:
     
  9. jpanhalt

    jpanhalt Well-Known Member Most Helpful Member

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    Nigel's supposition is correct. The microcontroller is there to adjust the spark advance according to engine speed. It allows for easy starting and then changes according to speed for more power. The hobbyists use a table look-up for the advance settings. See: http://www.rcuniverse.com/forum/m_4344316/tm.htm

    In answer to "how does it work," the 400V capacitor connected to the spark coil is charged with rectified current from the alternator, then rapidly discharged through the BT151 SCR , which causes the ignition coil to generate the high voltage (inductive
    kick) needed to fire the spark plug. The microcontoller provides the pulse needed to fire the SCR. The pick-up is frequently a Hall sensor, which provides timing information to the microcontroller.
     
  10. DEEE

    DEEE New Member

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    Hi dear,

    I can build the circuit, and I have a pic programmer but don't have the hex code file, if u have it please send me
     
    Last edited: Dec 16, 2007
  11. jpanhalt

    jpanhalt Well-Known Member Most Helpful Member

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    It's here: http://www.modelbouw.gompy.net/newcdi/newcdi.htm

    You may want to delete your e-mail address from your original post. John
     
  12. DEEE

    DEEE New Member

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    Re motobike CDI

    Thank u for ur reply,
    after build the circuit I'll can send u the result assoonas possible
     
  13. asiftv

    asiftv New Member

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    any body help me to make cdi .anybody send me diagram on my e.mail adders.this is my adders asif_shah25@hotmail.com
     
  14. asiftv

    asiftv New Member

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    how i can make cdi anybody tell me .
     
  15. mneary

    mneary New Member

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    This thread provides a lot of information. What do you not understand? Please ask specific questions.
     
  16. asiftv

    asiftv New Member

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    tell me about input and output con action .
     
  17. asiftv

    asiftv New Member

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    anybody tell me about cdi performers and reliability.
     
  18. asiftv

    asiftv New Member

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  19. asiftv

    asiftv New Member

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