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Stall warning through Radio

 
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John M Tipton



Joined: 07 Aug 2018
Posts: 13
Location: Devon - England

PostPosted: Thu Nov 29, 2018 6:39 am    Post subject: Stall warning through Radio Reply with quote

Hi

What kind of input do I use to in-put a 'Stall Warning' sound through the radio

John


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user9253



Joined: 28 Mar 2008
Posts: 1350
Location: Riley TWP Michigan

PostPosted: Thu Nov 29, 2018 7:22 am    Post subject: Re: Stall warning through Radio Reply with quote

If all you have now is a stall warning vane and switch, then that switch needs to turn on an audio oscillator which is then connected to an aux audio input on the radio. Search eBay for Assembled Audio Oscillator

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John M Tipton



Joined: 07 Aug 2018
Posts: 13
Location: Devon - England

PostPosted: Fri Nov 30, 2018 7:02 am    Post subject: Stall warning through Radio Reply with quote

I presume you mean one of these:

https://www.ebay.co.uk/itm/Assembled-Low-Distortion-Audio-Range-Oscillator-1KHz-Sine-Wave-Signal-Generator/153165312394

Regards

John

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From: user9253 (fransew(at)gmail.com)
Sent: 29 November 2018 15:22
To: aeroelectric-list(at)matronics.com (aeroelectric-list(at)matronics.com)
Subject: Re: Stall warning through Radio


--> AeroElectric-List message posted by: "user9253" <fransew(at)gmail.com>

If all you have now is a stall warning vane and switch, then that switch needs to turn on an audio oscillator which is then connected to an aux audio input on the radio.  Search eBay for Assembled Audio Oscillator

--------
Joe Gores




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=485868#485868


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user9253



Joined: 28 Mar 2008
Posts: 1350
Location: Riley TWP Michigan

PostPosted: Fri Nov 30, 2018 6:11 pm    Post subject: Re: Stall warning through Radio Reply with quote

Yes, something like that is what I had in mind. If someone else has a suggestion, please post.

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Eric Page



Joined: 15 Feb 2017
Posts: 110

PostPosted: Fri Nov 30, 2018 6:57 pm    Post subject: Stall warning through Radio Reply with quote

Joe, you might try searching eBay for “voice recorder module.” There are several variants that can record whatever you wish, and play it back when triggered. Prices start at $0.99.

Eric


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user9253



Joined: 28 Mar 2008
Posts: 1350
Location: Riley TWP Michigan

PostPosted: Sat Dec 01, 2018 6:36 am    Post subject: Re: Stall warning through Radio Reply with quote

Good suggestion Eric. I have one of those voice recorders along with an airspeed switch
on my RV-12 to warn of unlatched canopy during takeoff roll. -
-
John, search eBay for item number 332182973272, (Diy Kit 16-Tone)
I used one of those to make a toy for grand kids.
The description mentions voice, but there is no voice, just sounds.


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user9253



Joined: 28 Mar 2008
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Location: Riley TWP Michigan

PostPosted: Sat Dec 01, 2018 6:50 am    Post subject: Re: Stall warning through Radio Reply with quote

Those do-it-yourself kits require that aircraft voltage be reduced, perhaps to 5 volts.

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nuckolls.bob(at)aeroelect
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PostPosted: Sat Dec 01, 2018 12:48 pm    Post subject: Stall warning through Radio Reply with quote

At 08:50 AM 12/1/2018, you wrote:
Quote:
--> AeroElectric-List message posted by: "user9253" <fransew(at)gmail.com>

Those do-it-yourself kits require that aircraft voltage be reduced, perhaps to 5 volts.

[img]cid:7.1.0.9.0.20181201144640.0208eff8(at)aeroelectric.com.0[/img]

How about this?


Bob . . .


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user9253



Joined: 28 Mar 2008
Posts: 1350
Location: Riley TWP Michigan

PostPosted: Mon Dec 03, 2018 2:35 pm    Post subject: Re: Stall warning through Radio Reply with quote

There are lots of ways to make an alarm tone.
The Forrest Mims Engineer's Notebook (my favorite book) has some circuits.
https://www.zpag.net/Electroniques/Kit/The%20Forrest%20Mims%20Engineers%20Notebook.pdf
On page 55 is a gated tone source. Grounding a pin on a 74LS368 turns on the tone.


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Joe Gores
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PostPosted: Mon Dec 03, 2018 2:52 pm    Post subject: Stall warning through Radio Reply with quote

At 04:35 PM 12/3/2018, you wrote:
Quote:
--> AeroElectric-List message posted by: "user9253" <fransew(at)gmail.com>

There are lots of ways to make an alarm tone.
The Forrest Mims Engineer's Notebook (my favorite book) has some circuits.
https://www.zpag.net/Electroniques/Kit/The%20Forrest%20Mims%20Engineers%20Notebook.pdf
On page 55 is a gated tone source. Grounding a pin on a 74LS368 turns on the tone.

Boy . . . there's a classic. I've recommended
that publication dozens of times over the years.
An excellent learning tool.




Bob . . .


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