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Eye Beam Mini LED / RF interference

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jonlaury

Joined: 06 Nov 2006
Posts: 336

Posted: Fri Feb 22, 2013 10:38 am Post subject: Eye Beam Mini LED / RF interference

Listers.

I posted this about a year ago, but now I'm down to the short list of squawks so this has moved to the front burner.



I have installed an EyeBeam mini LED cabin light in my composite airframe. Unfortunately I do not have a schematic of the unit, but it uses capacitance (touch) to control the on/off function and dimming.



The LED is powered by shielded, twisted pair power and ground wire cable. In the same small enclosure on the ceiling there is a 4 ohm 1.25" x 1.75" cabin speaker and it's power and ground comes from 180 deg away from the wires feeding the LED with no parallelism or overlap. The shield for the LED is grounded at the ship's single point ground bus.



The problem:

When I key the microphone, the EB turns on. If I key it again, the EB begins flashing uncontrollably. It is unresponsive to the dimming control and the on/off switch. The only way to stop the flashing is to disconnect the EB from power. The EB works as intended when connected to battery power independent of the ship's electrical system. The LED also turns on if I power up the audio panel with the speaker selected. Yesterday it turned on when my hand got near it.



Attempts at a solution:

Thinking that the the magnetic field of the speaker magnet may be causing the problem, the speaker was disconnected and the mic was keyed. The EB exhibited the same uncontrollable flashing upon keying the microphone. I installed elongated ferrite donuts on the LED cable at various locations and on the speaker wires to no effect.

I contacted the manufacturer and their solution was some huge boss hog thing that I'm sure would prevent ET from phoning home.

If co-located with the LED, it needs to be small enough to fit in about a 1/2" high x 1.25"OD cylinder



Any ideas on what's happening and/or how to fix it?



Thanks,

John

nuckolls.bob(at)aeroelect
Guest

Posted: Fri Feb 22, 2013 1:15 pm Post subject: Eye Beam Mini LED / RF interference

 	  Quote: 	
		  



Any ideas on what's happening and/or how to fix it?


	


   Without more details on how it's made, I wouldn't have

   a clue. Touch-sensitive switches are not well suited

   to a strong rf/noise environment. Unless the product

   was subjected to at least a rudimentary investigation

   of it's vulnerabilities, anything we might attempt

   is just throwing darts.

   Bob . . .

Eric M. Jones

Joined: 10 Jan 2006
Posts: 565
Location: Massachusetts

Posted: Sat Feb 23, 2013 6:02 am Post subject: Re: Eye Beam Mini LED / RF interference

Ditto what Bob N. says. I couldn't even make my capacitive-touch desk lamp work reliably.



Also no "Clapper" switches.



do not archive

_________________
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net

james(at)etravel.org
Guest

Posted: Sat Feb 23, 2013 6:18 am Post subject: Eye Beam Mini LED / RF interference

 	  Quote: 	
		   Also no "Clapper" switches.


	


That made me laugh so much!





Do not archive



On 23 February 2013 14:02, Eric M. Jones <emjones(at)charter.net> wrote:

 	  Quote: 	
		   



 Ditto what Bob N. says. I couldn't even make my capacitive-touch desk lamp work reliably.



 Also no "Clapper" switches.



 do not archive



 --------

 Eric M. Jones

 www.PerihelionDesign.com

 113 Brentwood Drive

 Southbridge, MA 01550

 (508) 764-2072

 emjones(at)charter.net





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=394856#394856

N38CW

Joined: 16 Apr 2008
Posts: 57
Location: Winston-Salem, NC

Posted: Sat Feb 23, 2013 8:29 am Post subject: Re: Eye Beam Mini LED / RF interference

 	  jonlaury wrote: 	
		   ...I have installed an EyeBeam mini LED cabin light in my composite airframe... Any ideas on what's happening and/or how to fix it?



Thanks,

John 	




Jon, Is this the product you have installed?  I'm curious because I was planning on using these also.  Thanks.



http://www.aveoengineering.com/index.php/product-info-eyebeam-mini

_________________
Bill Settle
RV-8 Fuselage

jonlaury

Joined: 06 Nov 2006
Posts: 336

Posted: Sun Feb 24, 2013 8:07 am Post subject: Re: Eye Beam Mini LED / RF interference

[/quote]



Jon, Is this the product you have installed?  I'm curious because I was planning on using these also.  Thanks.



http://www.aveoengineering.com/index.php/product-info-eyebeam-mini[/quote]



Bill,

Yes, the same. But I don't know what they mean when they say "no external power source required". That would be some trick!



Aside from the issue I'm having, it works really well when I don't have other devices on. Undimmed, the light is very bright and white. Mine is mounted on the ceiling (attached) of my Glasair in the center and the eyeball range of motion is excellent for reading (pilot or pass) and panel illumination.

Allow about 3/4" for clearance above the spec drawing for range of motion of the ribbon cable, hence the housing I made.

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deej(at)deej.net
Guest

Posted: Sun Feb 24, 2013 8:57 am Post subject: Eye Beam Mini LED / RF interference

On Feb 24, 2013, at 11:07 AM, "jonlaury" <jonlaury(at)impulse.net> wrote:



 	  Quote: 	
		   But I don't know what they mean when they say "no external power source required". That would be some trick!


	


I think it means it doesn't have an external "box" to attach for power. You just attach the light fixture directly to the airplane power. 



-Dj

nuckolls.bob(at)aeroelect
Guest

Posted: Sun Feb 24, 2013 12:14 pm Post subject: Eye Beam Mini LED / RF interference

At 10:07 AM 2/24/2013, you wrote:

 	  Quote: 	
		  



	




Jon, Is this the product you have installed?  I'm curious because I 

was planning on using these also.  Thanks.



http://www.aveoengineering.com/index.php/product-info-eyebeam-mini[/quote]



Bill,

Yes, the same. But I don't know what they mean when they say "no 

external power source required". That would be some trick!


[/quote]

  Do the offer a 'dumb' version? It's not hard

  to build an airplane-friendly knob-operated

  on/off/dimmer.

   Bob . . .

sam.marlow

Joined: 25 Feb 2006
Posts: 99

Posted: Sun Feb 24, 2013 12:54 pm Post subject: Eye Beam Mini LED / RF interference

Ok Bob, I have an LED cabin litght that needs a on/off/white/red/dimmer 

switch, any ideas?



Robert L. Nuckolls, III wrote:

 	  Quote: 	
		   

 <nuckolls.bob(at)aeroelectric.com>



 At 10:07 AM 2/24/2013, you wrote:

> 

> <jonlaury(at)impulse.net>

>

> 	


>

> Jon, Is this the product you have installed?  I'm curious because I 

> was planning on using these also.  Thanks.

>

> http://www.aveoengineering.com/index.php/product-info-eyebeam-mini[/quote] 

> Bill,

> Yes, the same. But I don't know what they mean when they say "no 

> external power source required". That would be some trick!



  Do the offer a 'dumb' version? It's not hard

  to build an airplane-friendly knob-operated

  on/off/dimmer.

   Bob . . .




[/quote]

N38CW

Joined: 16 Apr 2008
Posts: 57
Location: Winston-Salem, NC

Posted: Sun Feb 24, 2013 3:55 pm Post subject: Re: Eye Beam Mini LED / RF interference

I don't believe so Bob. They offer that one and one that is a bit larger.

_________________
Bill Settle
RV-8 Fuselage

nuckolls.bob(at)aeroelect
Guest

Posted: Sun Feb 24, 2013 4:22 pm Post subject: Eye Beam Mini LED / RF interference

At 02:53 PM 2/24/2013, you wrote:

 	  Quote: 	
		  

<sam.marlow(at)roadrunner.com>



Ok Bob, I have an LED cabin litght that needs a 

on/off/white/red/dimmer switch, any ideas?


	


  Separate red and white lamps?



   Bob . . .

Uncle

Joined: 04 Oct 2011
Posts: 10

Posted: Mon Feb 25, 2013 5:34 am Post subject: Eye Beam Mini LED / RF interference

Sam,

Here's what I came up with for kneeboard lights to do what you're talking about.



William



--- On Sun, 2/24/13, Sam Marlow <sam.marlow(at)roadrunner.com> wrote:



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

 Subject: Re: Re: Eye Beam Mini LED / RF interference

 To: aeroelectric-list(at)matronics.com

 Date: Sunday, February 24, 2013, 3:53 PM

 --> AeroElectric-List message

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

 

 Ok Bob, I have an LED cabin litght that needs a

 on/off/white/red/dimmer switch, any ideas?

 

 Robert L. Nuckolls, III wrote:

 > 

 Nuckolls, III" <nuckolls.bob(at)aeroelectric.com>

 > 

 > At 10:07 AM 2/24/2013, you wrote:

 >> 

 "jonlaury" <jonlaury(at)impulse.net>

 >> 

 >> 	


 >> 

 >> Jon, Is this the product you have installed? 

 I'm curious because I was planning on using these

 also.  Thanks.

 >> 

 >> http://www.aveoengineering.com/index.php/product-info-eyebeam-mini[/quote]

 

 >> 

 >> Bill,

 >> Yes, the same. But I don't know what they mean when

 they say "no external power source required". That would be

 some trick!

 > 

 >  Do the offer a 'dumb' version? It's not hard

 >  to build an airplane-friendly knob-operated

 >  on/off/dimmer.

 > 

 > 

 >   Bob . . .

 > 

 > 

 > 

 > 

 > 

 

 

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Pilot_&_Co-Pilot_KB_Light_(02-25-13).pdf

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_________________
William E. Buckley

user9253

Joined: 28 Mar 2008
Posts: 1921
Location: Riley TWP Michigan

Posted: Mon Feb 25, 2013 7:10 am Post subject: Re: Eye Beam Mini LED / RF interference

Van's Aircraft sells an eyeball light and Light Bracket part number F-12124 .

http://www.vansaircraft.com/cgi-bin/store.cgi?ident=1361800579-166-15&browse=lighting&product=eyeball

Even though the product description says "incandescent", I am pretty sure that it is LED as used in the RV-12.  See this posting:

http://www.vansairforce.com/community/showpost.php?p=397494&postcount=26

Call Van's builder's support to verify before ordering.

The eyeball light in the RV-12 is powered by +12V and negative PWM from the Dynon dimmer output.

Joe

_________________
Joe Gores

jonlaury

Joined: 06 Nov 2006
Posts: 336

Posted: Wed Feb 27, 2013 8:36 am Post subject: Re: Eye Beam Mini LED / RF interference

Joe,

Not sure if the the little eyeball sold by VAn's (and Spruce) is incandescent, but the light output compared to the EB Mini is like comparing a match to the sun. The EB also is dimmable. The little eyeball needs to be fairly close to the target to provide meaningful light, but they are inexpensive and smaller.



John

nuckolls.bob(at)aeroelect
Guest

Posted: Wed Feb 27, 2013 9:38 am Post subject: Eye Beam Mini LED / RF interference

At 10:36 AM 2/27/2013, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: "jonlaury" <jonlaury(at)impulse.net>



 Joe,

 Not sure if the the little eyeball sold by VAn's (and Spruce) is incandescent, but the light output compared to the EB Mini is like comparing a match to the sun. The EB also is dimmable. The little eyeball needs to be fairly close to the target to provide meaningful light, but they are inexpensive and smaller. 	


  Those were originally incandescent. They would no doubt

  benefit from an LED upgrade. some builders have ordered

  red or white LED fixtures from our website



    



  One of these mounted on both sides of the canopy frame

  were used to flood the panel on RV3/4/8 projects.



  They proved to be bright enough . . . in fact needed

  to be dimmed for navigation in full darkness.



 

   Bob . . .    [quote][b]

Eric M. Jones

Joined: 10 Jan 2006
Posts: 565
Location: Massachusetts

Posted: Thu Feb 28, 2013 11:47 am Post subject: Re: Eye Beam Mini LED / RF interference

Perihelion Design sells an extremely versatile LED light too. 



See: www.PerihelionDesign.com



These are made from the Loc-Line snap together coolant line parts.  Dimmers are available too.

LED_Goosenecks.pdf

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_________________
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net

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