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Stall warning through Radio

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John M Tipton

Joined: 07 Aug 2018
Posts: 45
Location: Devon - England

Posted: Thu Nov 29, 2018 6:39 am Post subject: Stall warning through Radio

Hi



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



John

user9253

Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan

Posted: Thu Nov 29, 2018 7:22 am Post subject: Re: Stall warning through Radio

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

John M Tipton

Joined: 07 Aug 2018
Posts: 45
Location: Devon - England

Posted: Fri Nov 30, 2018 7:02 am Post subject: Stall warning through Radio

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

 

Sent from Mail for Windows 10

 

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

user9253

Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan

Posted: Fri Nov 30, 2018 6:11 pm Post subject: Re: Stall warning through Radio

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

_________________
Joe Gores

Eric Page

Joined: 15 Feb 2017
Posts: 247

Posted: Fri Nov 30, 2018 6:57 pm Post subject: Stall warning through Radio

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

user9253

Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan

Posted: Sat Dec 01, 2018 6:36 am Post subject: Re: Stall warning through Radio

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.

_________________
Joe Gores

user9253

Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan

Posted: Sat Dec 01, 2018 6:50 am Post subject: Re: Stall warning through Radio

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

_________________
Joe Gores

nuckolls.bob(at)aeroelect
Guest

Posted: Sat Dec 01, 2018 12:48 pm Post subject: Stall warning through Radio

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 . . .

ccf827.jpg

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user9253

Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan

Posted: Mon Dec 03, 2018 2:35 pm Post subject: Re: Stall warning through Radio

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.

_________________
Joe Gores

nuckolls.bob(at)aeroelect
Guest

Posted: Mon Dec 03, 2018 2:52 pm Post subject: Stall warning through Radio

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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