Re: [CAD_CAM_EDM_DRO] Re: counting encoder holes ?

turbulatordude wrote:

>
>The main IC is one I cnnot identify. it is a National Semi, 8 pin
>DIP with M8528. I can't seem to cross reference that number.
>
>

8528 sounds like the date code.

>My main interest, of course, is to connect 5v and ground properly.
>
>Gnd is (I assume on the ground plane) on pin 4 so I assume pwr is on
>pin 8.
>
>

You'd be going out on a limb to make such an assumption. I'd try to trace
wiring back to obvious power supply connections, perhaps decoupling
capacitors.

Jon