RE: [CAD_CAM_EDM_DRO] help for a newbie

Please don't try to run ANY of the CNC drive from the
computer's power supply. A good place to start would
be to get a used AT type power supply to power the
equipment. They usually run $5 to $15 and have plenty
of power.

Red=+5
Yellow=+12
Black=Ground (common to +5 and +12)
Cut off and individually tape or heat shrink all unused wires.

These supplies require a load so connect two 1 Ohm/5 Watt
resistors in series from one of the +5 lines to ground.

Good luck,
Emory

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-----Original Message-----
From: ksprayberry428 [mailto:kellys@...]
Sent: Monday, August 26, 2002 8:47 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] help for a newbie


Help!
I am trying to set up my Gecko g201's on my parallel port , and I'm
not having much luck, what am I missing? I am only playing with one
drive for now as I would hate to fry all 3 by doing something stupid,
which I am fully capable of doing!
I asked the question about a wall wart last week, and since then I
have come across an old computer to run turbocnc and to pull my +
5vdc singal from.

I have the all the windings in the correct terminals on the g201, I
don't have anything in the disable terminal 7 at the moment, I am
just trying to get the motor to move for now. Terminal 8 I have
connected to pin 2 on the parallel port cable, terminal 9 to pin 3 on
the parallel port cable, I used a floppy disk drive power connector
to pull my 5 volts from to terminal 10. I took and tied pins 18-25 to
the ground of this same power connector (that may be the problem) I
have a 36k ohm 1/4 watt resistor across terminals 11 and 12. I was
told to set the amperage for about 2.86 amps. When I turn on the
power supply I can feel the motor lock up, but thats it. I did feel t
flinch as the computer booted up. It does have a good bit of holding
torque. I tried to use the fkeybit, but that does not produce
anything. I checked the voltage from the case to terminal 10 and have
about 5.27 volts, I have about .5 volts on terminals 8 and 9.
I have 8 wire bipolar motors with the windings connected in a series.
I'm sure this is either something really easy that I have missed or I
need to be saving my money for another drive!
Thanks for the help!

Kelly Sprayberry


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