Re: CMD-260 test mode?

I assuemed that with steppers installed, power supply up and drivers
wired, that the person posting does not yet have a parallel breakout
card or a computer.

Since, by far the easiest way is to use the computer with free ware,
TurboCNC or the precurser to Master5 the quest is just to test things
now.

If one was to build any kind of electronic gozmo, all that would be
time wasted if the only stopping point was the breakouit card.

And if the breakout card were the barrier, I would look at a radio
shaQ pre-drilled and pre etched circuit board. one could easily
solder the leads from a hacked printer cable, and then solder wires
to the drives for testing.

JMTCW

Dave
(just my two cents worth)



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

> Dave, Jeff,
>
> This mechanical method might give considerable "contact bounce",

giving

> you false indications in stepper motion. What is wanted is a

digital

> signal. a push button, and one-shot (TTL logic) of some sort would

be

> much better. Get a cheap light flasher kit with a 555 from RS or a
> local electronics (kit) store, and you'll be good to go. Ramsey and
> others even have low cost stepper kits which can give you some

digital

> signals to work with (they can even DRIVE the steppers they're

intended

> to be used with).
>
> Yes, use TurboCNC to supply you test signals!!
>
> HTH
>
> Alan KM6VV
>
>
> "turbulatordude " wrote:
> >
> > The cheesy, low cost way to test steppers is to get yoru step

signal,

> > on line to the driver, the other to a board. then from the board

to

> > the driver.
> >
> > <SNIP>
> > this is a really poor type of enocoder, but if you don't have a

puter

> > connected, it will work.
> >
> > You would probably be better off chopping an old printer cable and
> > using TurboCNC to test things. IMHO as then all you need is to

feed

> > a 5 volt power signal from the game port to complete the signal

loop.

> >
> > Dave