Re: [CAD_CAM_EDM_DRO] Stepper speed

Hi Bill,

If you're just driving a prop in a boat, why not use a DC motor? Cheap,
no stepper driver required. Get an old 5.25" floppy drive, the bigger
the better. I once bought 25 of 'em. they contain a DC motor (with
tach) to drive the spindle, and a small stepper to drive the head. I
just saw similar motors advertised in "alltronics" (I think) this
morning. Can I send you a couple of motors? Speed control? a PIC can
do PWM, and "read" the tach!

I thought your launches were STEAM launches? ;>)

Alan KM6VV


wanliker@... wrote:

>
> Under the circumstances that we are driving them, i.e., Gecko or Camtronics,
> how many RPM will a stepper turn? In this instance I am interested in
> driving a prop in a model boat.
>
> Also where did the information on the BDI problem get posted, I have received
> nothing.
>
> Thanks,
> bill