Subject: Re: rs232-controller switches
To: Manuel Bouyer <firstname.lastname@example.org>
From: Torsten Sadowski <email@example.com>
Date: 05/21/2003 20:41:56
You could try a shift register. That means some low level programming,
because you would have to use the handshake lines for control.
On Wed, 21 May 2003, Manuel Bouyer wrote:
> On Wed, May 21, 2003 at 09:11:13PM +0300, Jukka Marin wrote:
> > On Wed, May 21, 2003 at 08:05:13PM +0200, Manuel Bouyer wrote:
> > > I'm planning on building a 8-port power supply switch controlled by RS232.
> > > Has someone some schematics for this ? Or just some chips refenrences
> > > for UART would be a start.
> > > I guess I need a UART which presents the data on a 8 output pins.
> > > A bidirectionnal UART would be nice, so that the state of the switches can be
> > > reported back to the host (in case it reboots, etc ...)
> > You could do this with something like a PIC microcontroller (PIC16F628,
> > for example). It has one UART and up to 14 I/O pins.
> Yes, someone at work suggested this too.
> The problem is that this has to be programmed. We have the equipement at work,
> but I plan to make the shematics available on web, and would like to
> avoid PICs so that it could be build with minimal equipements.
> Manuel Bouyer <firstname.lastname@example.org>
> NetBSD: 24 ans d'experience feront toujours la difference