Re: [CAD_CAM_EDM_DRO] Boss 5 retrofitting

Geckos seem to act that way until they get their first pulse. Then they hold
quite well. You have the hardware pulse generator for DeskCNC, right? I'm
not very familiar with it, so can't offer too much help there. Do you have
+5V hooked to the "common" terminal on the geckos? What happens if (with the
pulse controller disconnected, nothing connected to the step and direction inputs
of the gecko) you take a jumper and hook from ground (the same ground you got
your +5V that goes to the "common" screw terminal) and touch it to the "step"
screw terminal on the gecko?

- Steven Ciciora

>I've almost got my Boss 5 retrofit finished. I reused old parts for
>the power supply, gecko 201's and DeskCNC from Deskam. I wired the
>motors according to the Home Shop Machinist articles earlier this
>year. The problem is it won't go. There is a noticible difference
>in turning a motor by hand when the unit is powered up or not. When
>it is on the motor tries to hold its position, although it is very
>weak and I can move it easily by hand. There is 80V DC to the
>Gecko, and I know the Deskam controller board is working because it
>can operate the spindle. Also the Gecko is staying very cool and I
>thought it should get pretty hot. Don't worry, its mounted on a
>bigol' heatsink with a high volume fan pointed at it. The only
>possibility I can think of is that the software is set up for three
>axes (setup has a minimum of two) and I wanted to hook them up one
>at a time and drive it around a little to get comfortable before I
>add another. Maybe it "sees" a missing motor and won't output to
>the others because of this.
>Thanks in advance
>Nathan
>
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