RE: [CAD_CAM_EDM_DRO] help with wiring

Set the jumper to + 5 for the 5V from the game port. If you want to use the
ground from the parallel port then set it to common ground. Yes the common
connector is where you put the 5 v from the game port or the parallel port
ground depending upon how you set it.

Here is the chart to save you from the math
PHASE CURRENT RESISTOR

1A 8.2K
2A 18K
3A 36K
4A 62K
5A 120K
6A 270K
7A OPEN

The amps that are referred to is the motor amps. Read the white paper on
steppers on the Gecko site to decide what you need based upon how you hook
it up. Set it to 1 amp to be safe if you just want to see it work.

The resistor can be a 1/4 watt Radio Shack unit.

Tim
[Denver CO]

> -----Original Message-----
> From: pkranger63 [mailto:pkranger63@...]
> Sent: Saturday, December 08, 2001 12:11 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] help with wiring
>
>
> Hope someone can take the time to help this cnc/electronics
> challenged guy out. I have got together all my stuff to convert my
> sherline mill to cnc. I went with gecko 210's for the drivers and am
> in the process of wiring one of them up to one of my stepper motors
> just to see if i can get one to work (would sure make me feel a lot
> better!) I am going right down the box hooking up wires and it sort
> of makes sense to me. Where I am a little confused is on the common
> and current set. I belive the commong is the terminal I want to run
> from pin one of my game port to get my 5v. Then there is a formula
> to figure out the resistor I guess I need for the current set that
> looks like this....R (in kilo-ohms)=47*Amps/(7-amps). I should have
> paid more attention in math class. What amps are we talking here..my
> motors are rated at 2.0 amps if that helps. Can I get a reistor like
> this at radio shack? Oh am I supposed to set my jumper in my gecko
> to common ground or common +5 volts when I use the game port. Thanks
> for any help :)
>
> Matt
>
>
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