Re: gecko wiring help

Well I gotta be close to getting this thing to work. Like I said I
get a voltage change when I hook my DVM to the step and dir terminals
and I use "jog". I can get this voltage change with both Turbocnc and
Master5. I also get the holding torque you talk about when the power
supply is turned on. I just cant get the motor to move. What else
should I be checking. I have checked and re-checked my pins on my
parrallel port. I am encouraged by what I have done so far and feel
I am close to getting this thing to work. As always thanks!

Matt

-- In CAD_CAM_EDM_DRO@y..., Alan Marconett KM6VV <KM6VV@a...> wrote:

> Hi Matt,
>
> Yes, you have direction! Step is probably there also, if you set

it up

> similarly. the 18K sounds familiar.
>
> Alan KM6VV
>
> pkranger63 wrote:
> >
> > Bear with me as I am very much electronicaly challenged. I set
> > everything up in turbocnc as you said I then put the negative and
> > postive leads of my DVM across the step and dir terminals on the
> > gecko and show arounf 3.25 volts, when i jog the opposite way it

goes

> > to 0.00 and when i again go the opposite way it goes back to

3.25, is

> > that what I am looking for? As far as the resistors I am not sure
> > what to go with. My motor is rated at 2 amps which would be a 18k
> > reisitor, do I want to go higher/lower than this. Thanks so much
> > Alan for taking to time to help me along.
> >
> > Thanks again,
> > Matt
> >
> > --- In CAD_CAM_EDM_DRO@y..., Alan Marconett KM6VV <KM6VV@a...>

wrote:

> > > Hi Matt,
> > >
> > > Mariss has a data sheet (which you probably have) at:
> > >
> > > http://www.geckodrive.com/support/pdf/g210_manual.pdf
> > >
> > >
> > > Connections:
> > >
> > > Black and Brown for A & B, Red and White for C & D, should be

fine.

> > >
> > > Run "common +5" jumpers, get +5 from game port.
> > >
> > > Configure jumpers for 1/2 step.
> > >
> > > Connect step and direction to parallel port plug.
> > >
> > > Insure Disable line is open. (useful to have a SPST switch
> > connected to
> > > this pin and ground).
> > >
> > > INSURE PROPER RESISTOR is installed for your MOTOR!!!
> > >
> > >
> > > Configure TurboCNC axis X pins for LINEAR, step/dir, and set

scale

> > > (0.000125 for a Sherline). LPT port is probably 378h, see what
> > yours
> > > is. Active LOW, Low is +. Pins you select will match your
> > connector
> > > wiring. Step = 2, Dir = 3 is typical.
> > >
> > > A DVM or suitable test probe should show the direction line

going

> > from
> > > hi to low as the X axis is jogged back and forth.
> > >
> > > A 'scope can be used to see the step line pulses.
> > >
> > > Complete the TurboCNC steps first, and check to see if your DVM
> > and/or
> > > 'scope shows activity. This divides the problem into two parts!
> > Get
> > > this working BEFORE you continue!
> > >
> > > A DVM should show the direction line going first hi, then low,

as

> > jog
> > > direction is changed.
> > >
> > > Not seen? Run the FKEYBIT.EXE program, and use F8 and Alt-F8 to
> > toggle
> > > step line, and F7 and Alt-F7 to toggle direction line.
> > >
> > > No DVM or meter? Use an LED in series with a 220 ohm resistor

to

> > sense
> > > (probe) between your +5 line and the step or direction pins.
> > >
> > > The port may be 378h, 278h or 3BCh. Try another port!
> > >
> > > A DVM or ohm meter set to 0-5V can sometimes also show activity

on

> > the
> > > step line; usually as a drop from the ~4V to a lower value, 2V

if a

> > > square wave is seen. Duty cycle of square wave determines
> > percentage of
> > > hi vs low.
> > >
> > > The following steps from DOS will run debug, and show you the
> > address of
> > > the LPT port (LPT1 shown) of your system, if you don't seem to

get

> > > anything from above steps. You might have more then one port.
> > > Determine which one to use!
> > >
> > > DEBUG
> > > D40:8
> > > 0040:0000 78 03 00 00 00 00 00 00 (this

line

> > debug
> > > types)
> > > Q
> > >
> > >
> > > The motor shaft should have holding torque once motor power is
> > turned
> > > on. If a disable switch has been connected, turning it on and

off

> > > should demonstrate the holding torque of the stepper.
> > >
> > > HTH
> > >
> > > Alan KM6VV