Lighted Knobs...How?

redrabbit · 16th March 2006, 12:11 PM

I've acquired a bunch of knobs that, when backlit, the "pointer/indicator line" will light up. The backsides are clear plastic (resin?). They are just over 1 inch wide, for a 1/4" shaft.

So how is this done? Are there ready-made LED fixtures ? ...or must I futz with it on my own?

=RR=

Apex Jr · 16th March 2006, 03:09 PM

As I recall the mil-spec lighted knobs were illuminated
from a blackend plastic panel with parts left white so a
light say a small 327 lamp 24V could be put into the plastic
in certian spots to illuminate both the panel and the knob.
Steve @ Apex Jr.

vixr · 16th March 2006, 03:20 PM

there is a device called a "light pipe" that is also used... optic fibers routed to a remote LED that carries the light thru the tiny fibers, to the knob

cpemma · 17th March 2006, 09:09 PM

One system using acrylic rod for the knobs - Final result and How-to

And another method with these aluminium knobs from the same guy.

16th March 2006, 12:11 PM	#1
redrabbit diyAudio Member Join Date: Oct 2004	Lighted Knobs...How? I've acquired a bunch of knobs that, when backlit, the "pointer/indicator line" will light up. The backsides are clear plastic (resin?). They are just over 1 inch wide, for a 1/4" shaft. So how is this done? Are there ready-made LED fixtures ? ...or must I futz with it on my own? =RR=

16th March 2006, 03:20 PM	#3
vixr diyAudio Member Join Date: Feb 2006 Location: florida	there is a device called a "light pipe" that is also used... optic fibers routed to a remote LED that carries the light thru the tiny fibers, to the knob __________________ sorry about my wallet...

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16th March 2006, 03:09 PM	#2
Apex Jr diyAudio Member Join Date: Jun 2002 Location: Torrance, Calif	As I recall the mil-spec lighted knobs were illuminated from a blackend plastic panel with parts left white so a light say a small 327 lamp 24V could be put into the plastic in certian spots to illuminate both the panel and the knob. Steve @ Apex Jr.

17th March 2006, 09:09 PM	#4
cpemma diyAudio Member Join Date: Jul 2003 Location: S Yorkshire OK	One system using acrylic rod for the knobs - Final result and How-to And another method with these aluminium knobs from the same guy.

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