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sam.marlow

Joined: 25 Feb 2006
Posts: 99

Posted: Sun Mar 04, 2012 8:53 pm Post subject: Coolie Hat Switch

Does anyone have a source for a roll your own coolie hat switch?

etienne.phillips(at)gmail
Guest

Posted: Mon Mar 05, 2012 4:42 am Post subject: Coolie Hat Switch

On 5 March 2012 06:50,  <sam.marlow(at)roadrunner.com (sam.marlow(at)roadrunner.com)> wrote:

 	  Quote: 	
		   --> AeroElectric-List message posted by: <sam.marlow(at)roadrunner.com (sam.marlow(at)roadrunner.com)>

 

 Does anyone have a source for a roll your own coolie hat switch?

	




Hi Sam 



Not cheap, but available from RS Components..

 http://tinyurl.com/6u8ephu

 

 Hope that helps!

 Etienne

 

  [quote][b]

nuckolls.bob(at)aeroelect
Guest

Posted: Mon Mar 05, 2012 6:00 am Post subject: Coolie Hat Switch

At 10:50 PM 3/4/2012, you wrote:

 	  Quote: 	
		  



Does anyone have a source for a roll your own coolie hat switch?


	


   I would think you'd need access to some

   pretty good machine tools and a good bit

   of patience. Not sure DIY is very cost

   effetive.



   Ray-Allen has one



http://www.rayallencompany.com/products/switches.html

        Bob . . .

                    ////

                   (o o)

    ===========o00o=(_)=o00o=========

    < Go ahead, make my day . . .   >

    < show me where I'm wrong.      >

    =================================

pmather

Joined: 17 Sep 2009
Posts: 33

Posted: Mon Mar 05, 2012 9:43 am Post subject: Coolie Hat Switch

Cheapest way of getting one is using an electric wing mirror switch from a car breakers or ebay

Uncle

Joined: 04 Oct 2011
Posts: 10

Posted: Mon Mar 05, 2012 1:44 pm Post subject: Coolie Hat Switch

Take a look at these from Digikey ($22.50 each)



http://search.digikey.com/us/en/products/500-526/679-2289-ND/2063280



William B.



--- On Sun, 3/4/12, sam.marlow(at)roadrunner.com <sam.marlow(at)roadrunner.com> wrote:



 	  Quote: 	
		   From: sam.marlow(at)roadrunner.com <sam.marlow(at)roadrunner.com>

 Subject: Coolie Hat Switch

 To: "aeroelectric-list(at)matronics.com" <aeroelectric-list(at)matronics.com>

 Date: Sunday, March 4, 2012, 11:50 PM

 --> AeroElectric-List message

 posted by: <sam.marlow(at)roadrunner.com>

 

 Does anyone have a source for a roll your own coolie hat

 switch?

 

 AeroElectric-List Email Forum -

    - MATRONICS WEB FORUMS -

 List Contribution Web Site -

               -Matt

 Dralle, List Admin.

_________________
William E. Buckley

nuckolls.bob(at)aeroelect
Guest

Posted: Mon Mar 05, 2012 5:07 pm Post subject: Coolie Hat Switch

At 03:42 PM 3/5/2012, you wrote:

 	  Quote: 	
		  

<hoverandwire(at)yahoo.com>



Take a look at these from Digikey ($22.50 each)



http://search.digikey.com/us/en/products/500-526/679-2289-ND/2063280


	


    Cool find Bill . . . these are electrically 'delicate'

    switches. Rated 1 to 50 mA. They should be used to control

    a solid-state buffered relay deck but they look pretty

    slick.

   Bob . . .

Uncle

Joined: 04 Oct 2011
Posts: 10

Posted: Wed Mar 07, 2012 8:45 am Post subject: Coolie Hat Switch

Bob (et al), 

Do you have a product recommendation for the solid state relays (14V system)? 



Thanks,

William B. 



--- On Mon, 3/5/12, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com> wrote:



 	  Quote: 	
		   From: Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com>

 Subject: Re: Fw: Coolie Hat Switch

 To: aeroelectric-list(at)matronics.com

 Date: Monday, March 5, 2012, 8:05 PM

 --> AeroElectric-List message

 posted by: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com>

 

 At 03:42 PM 3/5/2012, you wrote:

 > 

 William <hoverandwire(at)yahoo.com>

 > 

 > Take a look at these from Digikey ($22.50 each)

 > 

 > http://search.digikey.com/us/en/products/500-526/679-2289-ND/2063280

 

    Cool find Bill . . . these are

 electrically 'delicate'

    switches. Rated 1 to 50 mA. They should be

 used to control

    a solid-state buffered relay deck but they

 look pretty

    slick.

 

 

   Bob . . . 

 

 AeroElectric-List Email Forum -

    - MATRONICS WEB FORUMS -

 List Contribution Web Site -

               -Matt

 Dralle, List Admin.

_________________
William E. Buckley

nuckolls.bob(at)aeroelect
Guest

Posted: Wed Mar 07, 2012 9:56 am Post subject: Coolie Hat Switch

At 10:44 AM 3/7/2012, you wrote:

 	  Quote: 	
		  

<hoverandwire(at)yahoo.com>



Bob (et al),

Do you have a product recommendation for the solid state relays (14V system)?


	


         To buffer the contacts on the subject coolie hat switch?

         Not sure this takes a component relay . . . a few Radio

         Shack transistors and some resistors will do the job.

         I could publish a drawing to that design goal.





   Bob . . .

sam.marlow

Joined: 25 Feb 2006
Posts: 99

Posted: Wed Mar 07, 2012 1:15 pm Post subject: Coolie Hat Switch

That would be appreciated Bob!



---- "Robert L. Nuckolls wrote: 



=============




At 10:44 AM 3/7/2012, you wrote:

 	  Quote: 	
		  

<hoverandwire(at)yahoo.com>



Bob (et al),

Do you have a product recommendation for the solid state relays (14V system)?


	


         To buffer the contacts on the subject coolie hat switch?

         Not sure this takes a component relay . . . a few Radio

         Shack transistors and some resistors will do the job.

         I could publish a drawing to that design goal.





   Bob . . .

raymondj(at)frontiernet.n
Guest

Posted: Wed Mar 07, 2012 1:41 pm Post subject: Coolie Hat Switch

I'll second that. I have some "delicate" switches that would benefit.



Thanks,

Raymond Julian

Kettle River, MN



"And you know that I could have me a million more friends,

and all I'd have to lose is my point of view." - John Prine



On 03/07/2012 03:13 PM, sam.marlow(at)roadrunner.com wrote:

 	  Quote: 	
		   



 That would be appreciated Bob!



 ---- "Robert L. Nuckolls wrote:



 =============

 



 At 10:44 AM 3/7/2012, you wrote:

> 

> <hoverandwire(at)yahoo.com>

>

> Bob (et al),

> Do you have a product recommendation for the solid state relays (14V system)?



           To buffer the contacts on the subject coolie hat switch?

           Not sure this takes a component relay . . . a few Radio

           Shack transistors and some resistors will do the job.

           I could publish a drawing to that design goal.





     Bob . . .

ainut(at)knology.net
Guest

Posted: Thu Mar 08, 2012 8:27 am Post subject: Coolie Hat Switch

Can't you just remove one from a $40 joystick?



David M



Etienne Phillips wrote:

 	  Quote: 	
		   On 5 March 2012 06:50, <sam.marlow(at)roadrunner.com 

 <mailto:sam.marlow(at)roadrunner.com>> wrote:



     

     <sam.marlow(at)roadrunner.com <mailto:sam.marlow(at)roadrunner.com>>



     Does anyone have a source for a roll your own coolie hat switch?

 Hi Sam



 Not cheap, but available from RS Components...

 *http://tinyurl.com/6u8ephu

 *

 Hope that helps!

 Etienne*

 *

 *

 *


	


-- 

Tell the truth.  Be honest.  Be responsible to and for yourself.



We want our freedoms back.  Strike the illegal legislations called: 1) obamacare, 2) "Patriot (HA!) Act", and 3) 'presidential orders' that affect anyone besides gubmnt worker bees.

Hate crime laws?  Really?  Thought police?  Orwell would be proud.



Every gram of cocaine you buy from elsewhere contributes to an innocent being murdered in Central and South America.  Grow your own or Stop taking it.

nuckolls.bob(at)aeroelect
Guest

Posted: Thu Mar 08, 2012 12:35 pm Post subject: Coolie Hat Switch

At 03:39 PM 3/7/2012, you wrote:

 	  Quote: 	
		  



I'll second that. I have some "delicate" switches that would benefit.


	


    Now you dun it . . . got started on a good idea

    last night and couldn't put it down until after 2

    a.m.



    Here's a first pass at an all solid state, two channel

    relay deck and trim speed controller for a pair of

    Ray-Allen trim actuators. It features adjustable

    rates for both pitch and roll trim, dual inputs from

    pilot and copilot stick grips, conflicting command

    lockout, 10 to 30 volt input so it can be used on both

    14 and 28v systems, AND . . . it will only load the

    trim-switch contacts very lightly . . . about 20 mA.



http://www.aeroelectric.com/Misc/7299_Ray-Allen_Relay-Deck_Schematic.pdf



    The parts values are not assigned yet so don't run

    of an start buying parts. This is a preliminary look

    at one concept for integrating those $22 switches

    from Digikey into a Ray-Allen trim system.



    I know it looks 'busy' . . . and not everyone will

    want a full-up system. But the added expense of

    including provisions for unneeded features is trivial.

    The builder can take an assembly like this and craft

    any one of many combinations of features.



    At first blush, it looks like it would assemble onto

    a 2.5 x 2.0 inch ECB with a 25 pin d-sub connector down

    one side.



    I need to quit 'playing' and get back on some committed

    activities. I've got a young fellow who is interested

    in learning how to lay out etched circuit boards. I'll

    email him a copy of the drawing and see if he can get

    all the parts on that size board. I know I can but

    we'll give him a something to do over the up coming

    spring break.



   Bob . . .

sam.marlow

Joined: 25 Feb 2006
Posts: 99

Posted: Thu Mar 08, 2012 12:58 pm Post subject: Coolie Hat Switch

wow looks great Bob!

---- "Robert L. Nuckolls wrote: 



=============




At 03:39 PM 3/7/2012, you wrote:

 	  Quote: 	
		  



I'll second that. I have some "delicate" switches that would benefit.


	


    Now you dun it . . . got started on a good idea

    last night and couldn't put it down until after 2

    a.m.



    Here's a first pass at an all solid state, two channel

    relay deck and trim speed controller for a pair of

    Ray-Allen trim actuators. It features adjustable

    rates for both pitch and roll trim, dual inputs from

    pilot and copilot stick grips, conflicting command

    lockout, 10 to 30 volt input so it can be used on both

    14 and 28v systems, AND . . . it will only load the

    trim-switch contacts very lightly . . . about 20 mA.



http://www.aeroelectric.com/Misc/7299_Ray-Allen_Relay-Deck_Schematic.pdf



    The parts values are not assigned yet so don't run

    of an start buying parts. This is a preliminary look

    at one concept for integrating those $22 switches

    from Digikey into a Ray-Allen trim system.



    I know it looks 'busy' . . . and not everyone will

    want a full-up system. But the added expense of

    including provisions for unneeded features is trivial.

    The builder can take an assembly like this and craft

    any one of many combinations of features.



    At first blush, it looks like it would assemble onto

    a 2.5 x 2.0 inch ECB with a 25 pin d-sub connector down

    one side.



    I need to quit 'playing' and get back on some committed

    activities. I've got a young fellow who is interested

    in learning how to lay out etched circuit boards. I'll

    email him a copy of the drawing and see if he can get

    all the parts on that size board. I know I can but

    we'll give him a something to do over the up coming

    spring break.



   Bob . . .

Bob McC

Joined: 09 Jan 2006
Posts: 258
Location: Toronto, ON

Posted: Fri Mar 09, 2012 7:18 am Post subject: Coolie Hat Switch

At a quick glance there appears to be a slight error in the circuit as

posted. (possibly a result of that 2:00AM thing?) It appears that the "up"

and "down" functions on the input switches control both the pitch and roll

circuits and the "left" and "right" functions serve no purpose?? Or am I

misreading something??



Bob McC



[quote] --

_________________
Bob McC
Falco #908
(just starting)

nuckolls.bob(at)aeroelect
Guest

Posted: Fri Mar 09, 2012 7:38 am Post subject: Coolie Hat Switch

At 09:18 AM 3/9/2012, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: Bob McCallum <robert.mccallum2(at)sympatico.ca>



 At a quick glance there appears to be a slight error in the circuit as

 posted. (possibly a result of that 2:00AM thing?) It appears that the "up"

 and "down" functions on the input switches control both the pitch and roll

 circuits and the "left" and "right" functions serve no purpose?? Or am I

 misreading something?? 	
  Good eye sir! It's pretty easy to let 'big picture' items get by you while squinting at it on the screen. I printed the drawing on a nice big 11 x 17 piece of paper last night to start combing the nits and assigning part values. I found exactly what you've described and corrected it.

  You're right on track my friend. If anyone else feels motivated to sift the sands of this effort and post  their questions/findings, it would be much appreciated . . . it's always good to have several pairs of eyes looking for disconnects between design goals and the practical physics. Thanks!

  I've posted the latest iteration to the server.   http://aeroelectric.com/Pictures/Schematics/7299p1_Ray-Allen_Relay-Deck_Schematic.pdf

 

 

   Bob . . .    [quote][b]

Tundra10

Joined: 14 Jun 2010
Posts: 102
Location: Scarborough, Ontario

Posted: Fri Mar 09, 2012 1:51 pm Post subject: Coolie Hat Switch

 	  Quote: 	
		      Here's a first pass at an all solid state, two channel

    relay deck and trim speed controller for a pair of

    Ray-Allen trim actuators.

    http://www.aeroelectric.com/Misc/7299_Ray-Allen_Relay-Deck_Schematic.pdf


	


Bob,



Just wondering if it is practical to fail-safe a failure of the H-bridge ?

Is there a tiny fuse that could be soldered to the circuit board in  

case the H-bridge shorts out ?



What about integrating a "master disconnect" pulse from an external  

push button ?



Jeff Page

Dream Aircraft Tundra #10

user9253

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

Posted: Sat Mar 10, 2012 5:20 am Post subject: Re: Coolie Hat Switch

The TC648VPA-ND (Digi-Key) or 579-TC648VPA (Mouser) can be used to control the speed of a trim motor.  Rather than controlling the speed with reduced voltage, the TC648 applies full voltage, but with a reduced duty cycle (PWM) that is set via the voltage on pin 1.

Joe

Trim Speed CTRL.pdf

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_________________
Joe Gores

nuckolls.bob(at)aeroelect
Guest

Posted: Sun Mar 11, 2012 12:14 pm Post subject: Coolie Hat Switch

At 04:49 PM 3/9/2012, you wrote:

 	  Quote: 	
		  



>    Here's a first pass at an all solid state, two channel

>    relay deck and trim speed controller for a pair of

>    Ray-Allen trim actuators.

>    http://www.aeroelectric.com/Misc/7299_Ray-Allen_Relay-Deck_Schematic.pdf



Bob,



Just wondering if it is practical to fail-safe a failure of the H-bridge ?

Is there a tiny fuse that could be soldered to the circuit board in

case the H-bridge shorts out ?


	


   Good question.



   The 3-terminal regulators are self-current limiting so

   a shorted h-bridge wouldn't open a fuse. Further, the

   h-bridge is so lightly loaded and protected from external

   antagonisms less than lightning strike so I think that

   worry is insignificantly small.



 	  Quote: 	
		  What about integrating a "master disconnect" pulse from an external

push button ?


	


   If the trim system associated with this controller

   were capable of putting the crew in a high pucker-factor

   situation, it would probably be something to consider.

   But if anyone's trim system is aerodynamically risky

   if run to a stop, it's probably wise to fix the set up

   as opposed to adding a crew operated disconnect.

   Bob . . .

nuckolls.bob(at)aeroelect
Guest

Posted: Mon Mar 12, 2012 1:23 pm Post subject: Coolie Hat Switch

Subject: devices on the relay deck

 From: Janet Amtmann <jgamtmann2(at)gmail.com>

 To: nuckolls.bob(at)aeroelectric.com



 Bob,  

 What are the 5 devices in each channel of your prelim design of the relay deck?  They look like a mixing bowl balanced on a marble laid on the side.  You can reply on the List. Thanks



 Jurgen Amtmann



    Those are 2-input NAND gates, 



    (Two HIs gets you a LO, any LO gets you a HI)

   

    I use the CD4093 quad 2-input a lot in these applications.

    The part numbers for all the devices will be included on

    the final iteration.



   Bob . . .

     [quote][b]

nuckolls.bob(at)aeroelect
Guest

Posted: Tue Mar 13, 2012 11:23 am Post subject: Coolie Hat Switch

Re: on limit timer



 I've been trying to figure out a way to add on-limit timer to the

 previous iteration of the circuit but with a minimum of added parts.

 Here's one pass at it:



 There were three, 'left over' gates in the CD4093 devices which

 I've combined with a capacitor, transistor, resistor and diode

 to sense the presence of any input command. This starts a timer

 set with the RC time constant of the resistor and capacitor

 which will drive the gate of the transistor HI after n-seconds.



 The transistor pulls down on the power supply's adjust node and

 reduces voltage to the trim system to 1.25 volts. If the

 motor will definitely not run at any speed under any load at

 this voltage, then this shutdown philosophy would work.



 Anybody got a Ray-Allen actuator laying around? Hook an

 AA cell to the white leads and tell us what you see. The

 next best alternative takes 1 more gate and a few more

 jelly-bean parts . . . but it goes in series with the command

 leads to the h-bridge.



 

 [img]cid:7.1.0.9.0.20120313140559.01dfe710(at)aeroelectric.com.0[/img] 



 

   Bob . . .

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