Re: [CAD_CAM_EDM_DRO] Re: Arcsin 3 axis

turbulatordude wrote:

>I don't know the HobbyCNC or ArcSin components well enough to know
>they are rated for the max of the parts or de-rated for the
>application.
>
>

The HobbyCNC board is derated, the SLA7062M driver chip used on the
board is rated for 46 volts (Dave R. reports having run it at 48v
without blowing anything up). The 44v rating of the board gives a
little wiggle room for the board to deal with the unregulated power
supplies typically used with the board.

The ArcSin board looks more complicated than and not significantly
better than the HobbyCNC board to me.
I'd feel a little limited with the 30KHz step rate limit specified.
With 8x microstepping, 20 tpi lead screws and 200 steps/rev the max
speed looks a little slow.

I think the HobbyCNC 3 axis board at $80 is a better deal, even if you
have to pay someone 30 bucks to assemble it for you.

cs