A 12C507




----- Original Message -----
From: "Byron A Jeff" <byron@cc.gatech.edu>
To: "Microcontroller discussion list - Public." <piclist@mit.edu>
Sent: Saturday, August 27, 2005 1:48 PM
Subject: Re: [EE] Toggle Switch


> On Sat, Aug 27, 2005 at 08:23:58PM +0200, Francois Robbertze wrote:
> > I need to very simple and cheap circuit that will toggle a relay on and
of
> > on a pulse input.
> >
> > i.e.: first pulse(e.g. a key pressed) will switch relay on
> >     second pulse will switch the relay off again etc.
> >
> > I can easily do this with a pic , but I need this to be simple..
>
> What's simpler than a 12F629 programmed to do this activity? You're
> going to need debouncing anyway. Otherwise, the bouncing of the
> switch is going to cause the relay to pulse.
>
> So you need to add debounced in front of pulse. So you'll need to
> define the delay between pulses.
>
> At the end of the day you're looking for a 555 in monostable mode for a
> debounce circuit driving a flip-flop that's configured in toggle
> configuration.  So each press of the button will activate the 555 and
> clock the flip flop.
>
> Or as I started out with: what's simpler than a 12F629 programmed to
> do this activity?
>
> BAJ
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