Re: Re: Cnc PCB drilling machines z axis linear pot

PeterS

There are engineers and designers who would take exception to a couple of
your pronouncements.

>    From: "Peter Seddon" <peter@...>

<s>

> 4. Are analogue devices and thus less accurate
> 5. The signal requires conversion to a digital signal before it can be
> used (unless the system is fully analogue).

I'm not wanting to start a digital v analog(ue) war here -- there are
other lists for that. IMHO analogue systems are not inherently less
accurate but they may well be when constructed from hobby grade
components. To the contrary, computation delays, stepped or descrete
resolutions, and rounding errors may well make digital signals less
suitable to a critical task than an analogue system.

As we have come to realize from some digital software designers and
publishers, these systems may need as much care and feeding as an
ocasional fuzzy potentiometer.

RayH