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Re: gEDA-user: OT - Joystick control of stepper or servo motors
Thanks for the suggestions, DJ. Unfortunately, there's really no room for a pc where I have the microscope set up, and most laptops don't even have parallel ports any more. Plus running a full-blown pc just to drive a microscope seems like rather a waste of electricity.
> -----Original Message-----
> From: geda-user-bounces@xxxxxxxxxxxxxx
> [mailto:geda-user-bounces@xxxxxxxxxxxxxx] On Behalf Of DJ Delorie
> Sent: Monday, January 24, 2011 10:44 AM
> To: gEDA user mailing list
> Subject: Re: gEDA-user: OT - Joystick control of stepper or
> servo motors
>
>
> <plug mode>
>
> Renesas is currently having a design contest using their
> latest RX chips - the RX/62N. The 62N series has USB *host*
> and a bazillion timers, and can probably do everything you
> want in one chip.
>
> Search for "rx600" on digikey, but they're in the $17 range.
>
> I'm also asking for feedback on my latest RX/62N breakout board, here:
> http://www.renesasrulz.com/thread/3369 - if there's enough
> interest, I'll redesign it for hand soldering and make a
> batch of blanks.
>
> </plug mode>
>
> Coincidentally, I'm also doing some motor control stuff with
> the RX, although my motors are BLDC servos:
>
> http://www.delorie.com/electronics/rx/
>
> I'm waiting for the 48v power supply and a paste stencil (and
> time) before moving to the next step.
>
> I think steppers are the right way to go. Easy to operate,
> easy to position, go round and round more than once.
> Controlling the steppers is easy, you just need a few
> N-mosfet transistors (or a dual H-bridge chip, I suppose).
> The tricky part is getting an MCU with USB host
> functionality. Most have USB device functionality.
>
> An alternate solution is to google for one of the bazillion
> parallel port to stepper interfaces, or a PCB USB to stepper
> controller. Why re-invent the wheel when you can just use a PC?
>
> The first hit on "usb stepper control" is
> http://www.stepperboard.com/, for example.
>
>
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