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                           AeroElectric-List Digest Archive
                                      ---
                     Total Messages Posted Sat 04/22/23: 2
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Today's Message Index:
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     1. 04:23 AM - Re: Which Oil Pressure Switch?  (Mudfly)
     2. 08:24 PM - Re: Re: Which Oil Pressure Switch?  (Robert L. Nuckolls, III)
 
 
 
________________________________  Message 1  _____________________________________


Time: 04:23:09 AM PST US
Subject: AeroElectric-List: Re: Which Oil Pressure Switch?
From: "Mudfly" <shawntedwards@hotmail.com>


[quote="Eric Page"][quote="Mudfly"]I'm having trouble finding a wire diagram for
my unit, but guess the enable pin goes to ground.[/quote]
Here are the installation instructions for the unit you mentioned.  Wiring data
is on the first page.  The enable pin is active high.

https://tinyurl.com/386autu8+[/quote]


Thanks Eric


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=510669#510669


________________________________  Message 2  _____________________________________


Time: 08:24:37 PM PST US
From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Subject: Re: AeroElectric-List: Re: Which Oil Pressure Switch?


>    Curious: What kind of ignition
>    system do you have?
>    Bob . . .
>
>                     ////
>
>Bob,
>It's a Honeywell LM-HH3AS-H21.  The only document I have been able
>to find is the data sheet on this page.
>https://www.digikey.com/en/products/detail/honeywell-sensing-and-productivity-solutions/LM-HH3AS-H21/5069695
>My current electrical diagram has the unit powered off the Main Power
>Bus so it should illuminate the LCD numbers when the battery is
>switched on.   I need to find a home for wire from the enable pin.

    looked all over the data sheet and couldn't
    find a callout for enable pin functionality . . .
    for a Honeywell product, I find that surprising.

    Anywho, I suppose your assertion of active
    pull-down is correct.


>My planned ignition system is a SureFly on the left and a Slick mag
>on the right.   I'm working on a post for the list for a small can of worms
>I've opened with that system.

   Actually, no big deal. Given that you have
   a magneto, let's consider an ignition activity
   detector tie to the Slick p-lead.

   I did a sketch for a reader about a quarter
   century back. I'll see if I can dig it up
   or duplicate it. Probably have all the needed
   parts to dedicate to the cause. Watch
   this space.


   Bob . . .

                    ////
                   (o o)
    ===========o00o=(_)=o00o========
    < Go ahead, make my day . . .   >
    < show me where I'm wrong.      >
    ================================

    In the interest of creative evolution
    of the-best-we-know-how-to-do based
    on physics and good practice.

 

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