sounds like you want to debounce a switch for 10 seconds! why so long? How
accurate does it need to be?

> -----Original Message-----
> From: Tal [SMTP:kooter@012.NET.IL]
> Sent: Wednesday, October 22, 2003 9:10 AM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      Re: [PIC]: Monitoring switch(s) state
>
> Robert and others
>
> First, I admit that I have no idea how to write a code for pic's. this is
> the reason I ask for help.
> What I am looking for is very simple, a circuit that start when a switch
> is
> pressed for a brief time I call it "start".
> this switch is ignored if pressed again until "reset" switch is activate.
> another switch is activating a led while is pressed alternately this I
> call
> it  "running".
> the "reset" switch function in this way: if the switch is pressed for lets
> say 10 seconds (no less) then a buzzer is activate. any time less then 10
> sec will keep the circuit running (led is blinking while "running" is
> alternately pressed) and "start" switch is ignored.
> if "reset" is activated more than 10 sec then "start" switch can start the
> circuit all over again, and so on. like a loop.
>
> hope I explain my self coherently.
>
> I'll appreciate any help!
>
> Tal
>
>
>
> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On
> Behalf Of Robert Rolf
> Sent: Tuesday, October 21, 2003 3:45 AM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [PIC]: Monitoring switch(s) state
>
>
> Sounds more like a homework assignment.
>
> Not enough detail. Monitor for days, hours, minutes, miliseconds?
>
>
> R
>
> "Jan-Erik Soderholm XA (TN/PAC)" wrote:
> >
> > Tal wrote :
> > > Did anyone come across a circuit that can monitor the state of some
> > > switches?
> > > The general idea is to monitor the state of any switch (high/low) and
> > > measure the elapsed time that the switch is on or off.
> > > any circuit or idea will be most appreciate.
> > >
> > > Thanks
> >
> > I must be missing something here...
> >
> > A circuit to measure elapsed time ?
> > Using a PIC seams in line with the general topic of this maillist :-)
> > A pin with the internal pullup enabled maybe ?
> >
> > Is this an old thread ?
> >
> > Jan-Erik.
> >
> >
>
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