Re: Gecko Bridgeport saga - Gib adjustment?

Ok great, I will try it in the morning. I just picked up a switch
today that I can use nicely. But I am using a 12V unregulated DC
supply from the computer. Do I just connect a wire from Dir input
through a switch to the ground where the black wire from the
computer (I assume ground ) connects?

Thanks
Keith

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Stephen Wille Padnos
<spadnos@s...> wrote:

> Keith Clark wrote:
>
> >Do I put 5 volts to the dir input and then use a switch to turn

it

> >off to get direction? I will use the simple tape measure idea,
> >thanks to both of you. I a similar type to what is recommended
> >according to the oil company.
> >
> >Thanks
> >Keith
> >
> >
> Nope.
>
> You should be supplying 5V to the Gecko at the common pin (pin

12). The

> step and direction lines are active when you contact them to the

ground

> reference of the 5V supply. So, you should connect a switch

between the

> direction input and ground. When the switch is open, it'll be one
> direction (no current flowing through the opto-isolator LED), and

when

> you flip the switch, it'll change direction.
>
> Note that just hooking up a standard signal generator may not

work,

> since you do need to sink current from the step/dir inputs.
>
> - Steve