Re: [misterhouse-users] Spurious Weeder events?

[Evan G. <gr...@mn...>]

Craig,

I used 4N25 optically-coupled isolators to isolate both the inputs and 
outputs.  For the inputs, I also added a 0.1mfd capacitor across the 
input to the opto-isolators and ground.

I can send a schematic to you directly when I get a little time 
(hopefully tonight).


Evan


On 7 Apr 2004 at 14:33, Craig Schaeffer wrote:

> Can you elaborate? Part #'s, simple schematics? Thanks.
> 
> -Craig
> 
> --- Evan Graham <gr...@mn...> wrote:
> > I was having similar problems with my weeder dio card.
> > 
> > I finally added optoisolators and small capacitors across the inputs 
> > on the weeder.  This has dramatically improved the reliability of my 
> > setup.
> > 
> > Evan
> > 
> > On 6 Apr 2004 at 18:38, bazyle2002 wrote:
> > 
> > > 
> > > Kirk,
> > > Have you tried disconnecting the mailbox wires, at the weeder end, 
> > > for a spell. It sounds like it is picking up RF
> > > maybe also as a result of another operation triggered by mh, eg 
> > > switching a load. An opto isolator might cure it.
> > > Didn't someone recently have problems with spurious signals from a 
> > > garage sensor on long wires.
> > > baz
> > > --- In mis...@ya..., Kirk Bauer <kirk@k...> wrote:
> > > > I have a magnetic reed switch on my mailbox and it is connected to a
> > > > weeder digital input port.
> > > > 
> > > > Every once in a while, Misterhouse tells me the mailbox has been 
> > > opened
> > > > (like just now, on a Sunday).  Because I have a camera that can see 
> > > the
> > > > mailbox, I know that it wasn't actually opened.
> > > > 
> > > > The only thing I see in the log just before this event is:
> > > > 
> > > >    Unmatched incoming serial data=BBO.....
> > > 
> > > > > Kirk Bauer <kirk@k...>
> > > 
> > > 
> > > 
> > > 
> > > 
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