Mesa 5i25 config for chinese BOB

andypugh
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11 years 2 months ago #62001 by andypugh

Replied by andypugh on topic Mesa 5i25 config for chinese BOB

eFalegname wrote: . Shame to have to buy a new motherboard , it's difficult to find an intel atom mobo in Europe.

I recently bought one of these: www.mini-itx.com/store/?c=34#JNF9C-2800 Not the cheapest and not the best latency (though OK). But the fact it runs from 12V DC power and is very thin are nice for my application.

That same site has other (cheaper) boards. Despite appearances, the board comes with a set of serial header breakouts and a breakout for the VGA port.

Having said that, if you have a 5i25 and a motherboard then use that. If the Probotix firmware isn't quite right, then you may be able to just ignore those pins where the match is wrong.

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G0G53Z148
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10 years 11 months ago - 10 years 11 months ago #65927 by G0G53Z148

Replied by G0G53Z148 on topic Mesa 5i25 config for chinese BOB

Push up the POST again.

My machine is running with 2 of this BOB on P4

i want to change to mesa but want to use the bob so long they work, this is now 5 years.
I think i shoult contact mesa about a firmware to made custom then i think mesa will be mor comfortable. Some BOB to use mesa are not to become easy in europe.

or must open the cable and change the intern pinout 1 to 4 and so than a standard firmware is connectable for mesa to standard bob

may i am right?
hand

Last edit: 10 years 11 months ago by G0G53Z148.

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cncbasher
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10 years 11 months ago - 10 years 11 months ago #65929 by cncbasher

Replied by cncbasher on topic Mesa 5i25 config for chinese BOB

you should find one of the standard mesa bit files will fit , it's a standard layout , probotix is probably close
should if you need a bit file making to suit , shout

give me the pinouts required , as there are a few different versions of that particular bob .

Last edit: 10 years 11 months ago by cncbasher.

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eFalegname
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10 years 11 months ago #65934 by eFalegname

Replied by eFalegname on topic Mesa 5i25 config for chinese BOB

Bob Wiring diagram:
image missing http://i.imgur.com/WbAhjgr.jpg
I think the Mesa 6i25 is the best bet for this card and the modern PCs.

The following user(s) said Thank You: Desertboy

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andypugh
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10 years 11 months ago - 10 years 11 months ago #65936 by andypugh

Replied by andypugh on topic Mesa 5i25 config for chinese BOB

Looking at the options in the standard bitfiles (using grep on the .pin files actually)

5i25_dmmbob1x2.bit is close:

Code:

Pin#  I/O   Pri. func    Sec. func       Chan      Pin func        Pin Dir

    0   IOPort       PWMGen           0        PWM             (Out)
    1   IOPort       None
    2   IOPort       StepGen          0        Dir             (Out)
    3   IOPort       None
    4   IOPort       StepGen          0        Step            (Out)
    5   IOPort       None
    6   IOPort       StepGen          1        Dir             (Out)
    7   IOPort       None
    8   IOPort       StepGen          1        Step            (Out)
    9   IOPort       StepGen          2        Dir             (Out)
   10   IOPort       StepGen          2        Step            (Out)
   11   IOPort       StepGen          3        Dir             (Out)
   12   IOPort       StepGen          3        Step            (Out)
   13   IOPort       None
   14   IOPort       QCount           0        Quad-A          (In)
   15   IOPort       QCount           0        Quad-B          (In)
   16   IOPort       QCount           0        Quad-IDX        (In)

It has a quadrature encoder counter on pins 11.12.13 but you can set num_encoders to zero and then those are normal IO.
Also, the step and dir channels are reversed, but that may not be a problem if you are using the screw terminals, just swap the wires.

dmmbob1x2.bit does seem to be the only standard bitfile with a PWM on pin 1. Are you using the pwm to control spindle speed?

Last edit: 10 years 11 months ago by andypugh.

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cncbasher
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10 years 11 months ago #65953 by cncbasher

Replied by cncbasher on topic Mesa 5i25 config for chinese BOB

please check these pinouts
and do you need both 5i25 sockets setting the same or only the external db25
-- I/O 00 PIN 1 Spindle DAC PWM
-- I/O 01 PIN 14 Output 2 just GPIO
-- I/O 02 PIN 2 X Step
-- I/O 03 PIN 15 just GPIO
-- I/O 04 PIN 3 X Dir
-- I/O 05 PIN 16 B Step
-- I/O 06 PIN 4 Y Step
-- I/O 07 PIN 17 B Dir
-- I/O 08 PIN 5 Y Dir
-- I/O 09 PIN 6 Z Step
-- I/O 10 PIN 7 Z Dir
-- I/O 11 PIN 8 A Step
-- I/O 12 PIN 9 A Dir
-- I/O 13 PIN 10 Input 4 just GPIO
-- I/O 14 PIN 11 Input 2 (Quad A)
-- I/O 15 PIN 12 Input 3 (Quad

-- I/O 16 PIN 13 Input 4 (Quad Idx)

the quadrature pins are available for gpio if not used , so left that as an option

can anyone see a problem , before i make the file ?

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Mesa 5i25 config for chinese BOB