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  1. #31
    I did not see any connection of 5V and ground connection into the pcb design..
    But in the schematic there is 5V and ground connection,
    Any one please help me...

  2. Quote Originally Posted by lkanta View Post
    I did not see any connection of 5V and ground connection into the pcb design..
    But in the schematic there is 5V and ground connection,
    Any one please help me...

    see here: CNC Design Limited - USB 18F2550 Interface PCB

    bottom two connections on right hand set of connectors.

  3. #33
    Quote Originally Posted by Lee Roberts View Post
    Components:
    1 * 25pin socket
    1 * 18F4550 Chip
    1 * 40 pin Dip Socket.
    1 * USB Socket
    1 * 20mhz Xtal (the Pic internally clocks this upto 48mhz)
    2 * 22pf ceramics
    1 * 4k7 resistor
    1 * 1k resistor
    1 * LED
    1 * 0.1uf ceramic decoupling cap.
    1 * 0.1uf electrolytic capacitor
    1 * 22uf electrolytic capacitor
    1 * little tactile push switch for resetting Pic, not really needed.

    And a PCB about 75mm * 75MM

    Firmware Version 1.2 released 12/03/2006:

    Click here to download the Firmware Version 1.2 Type1.
    This code is for use with the 18F4550 Pic Chip.
    You will need a suitable Pic Chip programmer that supports the 18F4550.
    The fuses have all been set in the hex file, so simply load up, Program and Verify.
    Type 1 is configured for the following Pin Configuration:

    Pin2: Step X-Axis
    Pin3: Direction X-Axis
    Pin4: Step Y-Axis
    Pin5: Direction Y-Axis
    Pin6: Step Z-Axis
    Pin7: Direction Z-Axis
    Pin10: Z-Limit Switch
    Pin11: Emergency-Stop Switch
    Pin12: Y-Limit Switch
    Pin13: X-Limit Switch

    As we have said before, if you need the firmware customised to suit your controller then please email us and we will re-compile and release here.
    Command Structure for Firmware:
    Command Structure Ver 1.2 upwards:
    Commands are sent 11 bytes at a time.

    This first byte gets broken down into 8 bits and they do the following:
    bit0= X Axis Direction
    bit1= Y Axis Direction
    bit2= Z Axis Direction
    bit3= Travel kind, this is for the firmware to tell it to use different routines for G00 travelling or G01 cutting, 1=Travelling 0=Cutting
    If you set this bit to 1 then the firmware will not care about how it gets to this position and it will just clock each Axis until it gets there.
    If you set it to 0 then it will move the X and Y axis at even pulses to get to it's destination giving the correct line needed. This option takes more processing time, so speed pauses may have to be adjusted.
    bit4= Tells Firmware to ignore limit switches 1=ignore 0=do not ignore
    bit5= always 0
    bit6= always 0
    bit7= always 0
    Hi
    I need to convert this parallel board to USB but the firmware codes aren't suitable for it. Each pin of the parallel port goes through a Fet directly to the a coil of a motor. It controls 2 unipolar stepper motors. As you say if one needs a diferent firmware you could change it and post it here, I kindly ask you to do so.I attach the board for your reference . Thanks
    Click image for larger version. 

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    Last edited by sacra; 14-03-2013 at 12:15 PM.

  4. The Following User Says Thank You to sacra For This Useful Post:


  5. #34
    hello good interface such a query to format or convert to gcode ga
    I use vcarve 6.0 and then convert it from the software but it is frozen or has a special software to convert your answer gcode grasias por peru greetings

  6. #35
    you can customize for Mach3?

  7. #36
    Hello to everybody, i am new on this and i have the following pins configuration on a 4 axis cnc (DB25) :

    2 X step
    3 X dir
    4 Y step
    5 Y dir
    6 Z step
    7 Z dir
    8 A step
    9 A dir
    10 limit X
    11 limit y
    12 limit Z
    13 home
    14 rele out
    15 E Stop
    16 rele out
    17 rele out

    How can i do change the firmware ?
    Thanks
    (Sorry , i have bad english)

  8. #37
    Hi Lee Roberts , i am interesting in this interface , I am from Peru , How can i talk whith you? ...or what is your email , how can i write you ? ...i am interested in the pic project , the firmware , i want see the firmware project , the ansi c code's firmware to understand it and can make changes , please i will wait your response.

  9. #38
    Quote Originally Posted by a19971828 View Post
    Hi Lee Roberts , i am interesting in this interface , I am from Peru , How can i talk whith you? ...or what is your email , how can i write you ? ...i am interested in the pic project , the firmware , i want see the firmware project , the ansi c code's firmware to understand it and can make changes , please i will wait your response.
    The links in this thread are what's available, the designer's site is now dead and the product appears to be an orphan,
    Regards,
    Nick
    If you will not be swayed by logic or experience simply pick the idea you
    like best, but ask yourself why you sought advice in the first place and,
    for a simple life, perhaps consider not doing so in future

  10. #39
    Quote Originally Posted by Lee Roberts View Post
    Find below the first picture of version 1.0

    As you can see, this is not going to cost you a lot of money to make!!!!!!!!!


    PCB and Components.
    Please find below the PCB layout.
    Size of PCB is 75MM * 75MM



    Click here to download the Hi Resolution images.
    These are 600DPI JPG and need to be viewed and printed in Adobe Photoshop for an exact scale.
    Also included are postscript files as well.

    We are also releasing the PCB Layout in Gcode for people wanting to mill their own.

    Milling PCB below with 0.2mm engraving bit.

    Drilling PCB below with 0.8MM drill bit.

    Click here to download the Gcodes.
    Inside this file are two Gcodes, one for the Milling and the other for the drilling.

    It's possible to use this adapter with software mach3 without using plugins?

    Regards

  11. #40
    Quote Originally Posted by Dragoblaztr View Post
    It's possible to use this adapter with software mach3 without using plugins?

    Regards
    In short, no.
    If the designers had developed a plugin for Mach3 this would have sold like hot cakes ;-)

    - Nick
    If you will not be swayed by logic or experience simply pick the idea you
    like best, but ask yourself why you sought advice in the first place and,
    for a simple life, perhaps consider not doing so in future

  12. The Following User Says Thank You to magicniner For This Useful Post:


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