Home » Public Forums » GMCnet » [GMCnet] Little bit of light - $1 led puck light - GMC NOR CAL RALLY
| [GMCnet] Little bit of light - $1 led puck light - GMC NOR CAL RALLY [message #113244] |
Wed, 26 January 2011 23:46  |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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There are about 15 places on a GMC that need a little bit of light.
these are not the high power reading lights that are being sold at
Quartzsite,
but little bits of light needed all over the GMC.
Read here, this is a modification of a Dollar Tree 1 $ Puck Light
http://goo.gl/IV2Qu
3 led, puck lights, that are modified to:
run on 12 volts, at 20 ma, (0.020 amps)
plastic case and lens
built-in switch
removable mount
no batteries
last forever (LED)
can be water-proofed
Have to warn you, this is how to modify a $1 puck light to work on 12 volts
and requires dis-assembly, and soldering , ( but it is cheap;>)
I will be showing the lights and how to do the modifications at the GMC NOR
CAL work rally.
Gene
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] Little bit of light - $1 led puck light - GMC NOR CAL RALLY [message #113251 is a reply to message #113244] |
Thu, 27 January 2011 05:41  |
gmcrv1
Messages: 839
Registered: August 2007
Location: Memphis
Karma: -1
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Senior Member |
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Gene,
Great inexpensive mod. I have one of those Sylvania pucks that was given
out as a freebie somewhere about 6-7 years ago. Works great when getting up
in the middle of the night and you don't want to disturb someone. I think
I'll give the your mod a shot.
Sent from the Dollar Tree...
Tom Eckert N2VWN
73 Glacier
Oakland, TN
On Wed, Jan 26, 2011 at 11:46 PM, Mr.erf ERFisher <mr.erfisher@gmail.com>wrote:
> There are about 15 places on a GMC that need a little bit of light.
> these are not the high power reading lights that are being sold at
> Quartzsite,
> but little bits of light needed all over the GMC.
>
> Read here, this is a modification of a Dollar Tree 1 $ Puck Light
>
> http://goo.gl/IV2Qu
>
> 3 led, puck lights, that are modified to:
>
> run on 12 volts, at 20 ma, (0.020 amps)
> plastic case and lens
> built-in switch
> removable mount
> no batteries
> last forever (LED)
> can be water-proofed
>
> Have to warn you, this is how to modify a $1 puck light to work on 12 volts
> and requires dis-assembly, and soldering , ( but it is cheap;>)
>
> I will be showing the lights and how to do the modifications at the GMC
> NOR
> CAL work rally.
>
> Gene
>
>
> --
> Gene Fisher -- 74-23,77PB/ore/ca
> “Give a man a fish; you have fed him for today --- give him a URL and
> -------
> http://gmcmotorhome.info/
> Alternator Protection Cable
> http://gmcmotorhome.info/APC.html
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: [GMCnet] Little bit of light - $1 led puck light - GMC NOR CAL RALLY [message #113253 is a reply to message #113251] |
Thu, 27 January 2011 05:46 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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yah, the batteries was what always stopped me from using the Pucks.
If the Sylvania is a dimmer one, it will be hard to convert since the pc
board has an integrated circuit on it. For $1 I have just gone to Dollar
Tree lights, not worth the time ;>)
gopherit
gene
On Thu, Jan 27, 2011 at 3:41 AM, Tom Eckert <gmcrv1@gmail.com> wrote:
> Gene,
>
> Great inexpensive mod. I have one of those Sylvania pucks that was given
> out as a freebie somewhere about 6-7 years ago. Works great when getting
> up
> in the middle of the night and you don't want to disturb someone. I think
> I'll give the your mod a shot.
>
> Sent from the Dollar Tree...
>
> Tom Eckert N2VWN
> 73 Glacier
> Oakland, TN
>
>
>
> On Wed, Jan 26, 2011 at 11:46 PM, Mr.erf ERFisher <mr.erfisher@gmail.com
> >wrote:
>
> > There are about 15 places on a GMC that need a little bit of light.
> > these are not the high power reading lights that are being sold at
> > Quartzsite,
> > but little bits of light needed all over the GMC.
> >
> > Read here, this is a modification of a Dollar Tree 1 $ Puck Light
> >
> > http://goo.gl/IV2Qu
> >
> > 3 led, puck lights, that are modified to:
> >
> > run on 12 volts, at 20 ma, (0.020 amps)
> > plastic case and lens
> > built-in switch
> > removable mount
> > no batteries
> > last forever (LED)
> > can be water-proofed
> >
> > Have to warn you, this is how to modify a $1 puck light to work on 12
> volts
> > and requires dis-assembly, and soldering , ( but it is cheap;>)
> >
> > I will be showing the lights and how to do the modifications at the GMC
> > NOR
> > CAL work rally.
> >
> > Gene
> >
> >
> > --
> > Gene Fisher -- 74-23,77PB/ore/ca
> > “Give a man a fish; you have fed him for today --- give him a URL and
> > -------
> > http://gmcmotorhome.info/
> > Alternator Protection Cable
> > http://gmcmotorhome.info/APC.html
> > _______________________________________________
> > GMCnet mailing list
> > List Information and Subscription Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> >
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Little bit of light - $1 led puck light - GMC NOR CAL RALLY [message #113254 is a reply to message #113253] |
Thu, 27 January 2011 05:53 |
gmcrv1
Messages: 839
Registered: August 2007
Location: Memphis
Karma: -1
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Senior Member |
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Gene,
Not going to mod the Sylvania one - I use that in the bedroom at home. I'll
pick up the $1 ones today. Have you seen the LED lights with the magnetic
switch at the Dollar stores? One small light with a magnetic switch. Mount
the two pieces anywhere. When they separate the light goes on. Again, not
very bright - but who would have thought 20 years ago the technology would
exist - for $1. Batteries included!
Now I have to dig for the 100 ohmers.
Thanks,
Tom
On Thu, Jan 27, 2011 at 5:46 AM, Mr.erf ERFisher <mr.erfisher@gmail.com>wrote:
> yah, the batteries was what always stopped me from using the Pucks.
>
> If the Sylvania is a dimmer one, it will be hard to convert since the pc
> board has an integrated circuit on it. For $1 I have just gone to Dollar
> Tree lights, not worth the time ;>)
>
> gopherit
> gene
>
>
>
> On Thu, Jan 27, 2011 at 3:41 AM, Tom Eckert <gmcrv1@gmail.com> wrote:
>
> > Gene,
> >
> > Great inexpensive mod. I have one of those Sylvania pucks that was given
> > out as a freebie somewhere about 6-7 years ago. Works great when getting
> > up
> > in the middle of the night and you don't want to disturb someone. I
> think
> > I'll give the your mod a shot.
> >
> > Sent from the Dollar Tree...
> >
> > Tom Eckert N2VWN
> > 73 Glacier
> > Oakland, TN
> >
> >
> >
> > On Wed, Jan 26, 2011 at 11:46 PM, Mr.erf ERFisher <mr.erfisher@gmail.com
> > >wrote:
> >
> > > There are about 15 places on a GMC that need a little bit of light.
> > > these are not the high power reading lights that are being sold at
> > > Quartzsite,
> > > but little bits of light needed all over the GMC.
> > >
> > > Read here, this is a modification of a Dollar Tree 1 $ Puck Light
> > >
> > > http://goo.gl/IV2Qu
> > >
> > > 3 led, puck lights, that are modified to:
> > >
> > > run on 12 volts, at 20 ma, (0.020 amps)
> > > plastic case and lens
> > > built-in switch
> > > removable mount
> > > no batteries
> > > last forever (LED)
> > > can be water-proofed
> > >
> > > Have to warn you, this is how to modify a $1 puck light to work on 12
> > volts
> > > and requires dis-assembly, and soldering , ( but it is cheap;>)
> > >
> > > I will be showing the lights and how to do the modifications at the GMC
> > > NOR
> > > CAL work rally.
> > >
> > > Gene
> > >
> > >
> > > --
> > > Gene Fisher -- 74-23,77PB/ore/ca
> > > “Give a man a fish; you have fed him for today --- give him a URL and
> > > -------
> > > http://gmcmotorhome.info/
> > > Alternator Protection Cable
> > > http://gmcmotorhome.info/APC.html
> > > _______________________________________________
> > > GMCnet mailing list
> > > List Information and Subscription Options:
> > > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> > >
> > _______________________________________________
> > GMCnet mailing list
> > List Information and Subscription Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> >
> >
>
>
> --
> Gene Fisher -- 74-23,77PB/ore/ca
> “Give a man a fish; you have fed him for today --- give him a URL and
> -------
> http://gmcmotorhome.info/
> Alternator Protection Cable
> http://gmcmotorhome.info/APC.html
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
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| GMC NOR CAL RALLY [message #113276 is a reply to message #113244] |
Thu, 27 January 2011 09:18 |
bukzin
Messages: 840
Registered: April 2004
Location: North California
Karma: 0
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Senior Member |
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Gene,
Would you buy a few extra for the 'work rally'?
Thanks!
Bukzin
1977 Palm Beach
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| Re: [GMCnet] Little bit of light - $1 led puck light - GMC NOR CAL RALLY [message #114699 is a reply to message #114686] |
Wed, 09 February 2011 17:22 |
jayrabe
Messages: 509
Registered: June 2009
Location: Portland, OR
Karma: 0
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Senior Member |
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Assuming 0.7v dropped by the LED, and assuming the pucks are simple LED's rather than SMD's, and assuming they're set up for nominal 20ma at 12v, they'd have a 565 ohm resistor. If the voltage goes up to 16v, then you'd have 27ma through them, and all that I've seen have a max of 30ma, so back-of-the-envelope I'd feel safe with them.
If there are 3 LED's in the puck each with 0.7v drop, then the resistor is a little smaller, but you still only get 28ma at 16v.
But hey, at a buck apiece, you're not out much even if they fry...
J
76 PB
Portland, OR
> Question: What happens if the voltage goes to 16 or more volts as sometimes happens with a bad alternator or a bad ground on the motor charging side of the alternator?
>
> Can the LEDs handle the extra .6 to 1.3 volts each? I am the sort that sometimes leaves stuff on when I drive off and the puck lights would often get about 14.2 volts from solar charging or 15 volts if I equalize.
>
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| Re: [GMCnet] Little bit of light - $1 led puck light - GMC NOR CAL RALLY [message #114702 is a reply to message #114699] |
Wed, 09 February 2011 17:56 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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is not a problem with the puck lights,because, white LEDs drop about 3 to 4
volts each, as shown here
http://goo.gl/FglSU
and the 100 ohm resistor drops about 2 volts at 12 volt input (20 ma)
and
drops about 4 volts at 15 volts (40 ma)
so the 100 ohm resistor I put in protects the LEDs.
gene
On Wed, Feb 9, 2011 at 3:22 PM, Jay Rabe <jayrabe@hotmail.com> wrote:
>
> Assuming 0.7v dropped by the LED, and assuming the pucks are simple LED's
> rather than SMD's, and assuming they're set up for nominal 20ma at 12v,
> they'd have a 565 ohm resistor. If the voltage goes up to 16v, then you'd
> have 27ma through them, and all that I've seen have a max of 30ma, so
> back-of-the-envelope I'd feel safe with them.
> If there are 3 LED's in the puck each with 0.7v drop, then the resistor is
> a little smaller, but you still only get 28ma at 16v.
>
> But hey, at a buck apiece, you're not out much even if they fry...
>
>
> J
> 76 PB
> Portland, OR
>
> > Question: What happens if the voltage goes to 16 or more volts as
> sometimes happens with a bad alternator or a bad ground on the motor
> charging side of the alternator?
> >
> > Can the LEDs handle the extra .6 to 1.3 volts each? I am the sort that
> sometimes leaves stuff on when I drive off and the puck lights would often
> get about 14.2 volts from solar charging or 15 volts if I equalize.
> >
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] Little bit of light - $1 led puck light - GMC NOR CAL RALLY [message #114707 is a reply to message #114693] |
Wed, 09 February 2011 19:23 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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neat,
looks like no switch and $4.00 ea, but easy to use
most of these like the puck lights are not for reading, but great for the 15
spots I am filling
gene
On Wed, Feb 9, 2011 at 2:29 PM, corey jones <cjonesgo@yahoo.com> wrote:
>
>
> Great write-up and mod.
>
> came across another option:
>
> http://www.superbrightleds.com/cgi-bin/store/index.cgi?action=DispPage&category=ACCENTS&Page2Disp=%2Fspecs%2Fulite.htm
>
> the "ULITE-x3" is $4 and already set up for 12v wired in application. Not
> as creative, but the work is done. Have to consider shipping costs as well
> though, so not the deal that the $1 dollar tree special is. Still, for all
> the other projects to do, the simplicity of this makes it worthwhile. Lists
> as being waterproof, so good for engine bay etc.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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| Re: [GMCnet] Little bit of light - $1 led puck light - GMC NOR CAL RALLY [message #114712 is a reply to message #114707] |
Wed, 09 February 2011 22:24 |
Douglas Norton
Messages: 191
Registered: April 2008
Karma: 0
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Senior Member |
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Too late for me to spend the big bucks on the $4 pucks. I bought four for a buck and dug my soldering iron out of the GMC. Also, near the pucks in the pucks for a buck store was a packet of speaker wire - 40 feet for a buck. Now I have a place to apply my solder.
I think I have some 100 ohm resistors. If not, I can use a couple of 50 ohm or a couple of 200 ohm resistors right? Also, I assume we can use a small 100 ohm resistor and will not need to use a big one. If my 50 ohm resistors are bigger than my 100 ohm resistors, that would rule them out. Say What? No watt! OhmY what fun we can have with Ohm's law!
--- On Wed, 2/9/11, Mr.erf ERFisher <mr.erfisher@gmail.com> wrote:
From: Mr.erf ERFisher <mr.erfisher@gmail.com>
Subject: Re: [GMCnet] Little bit of light - $1 led puck light - GMC NOR CAL RALLY
To: gmclist@temp.gmcnet.org
Date: Wednesday, February 9, 2011, 5:23 PM
neat,
looks like no switch and $4.00 ea, but easy to use
most of these like the puck lights are not for reading, but great for the 15
spots I am filling
gene
On Wed, Feb 9, 2011 at 2:29 PM, corey jones <cjonesgo@yahoo.com> wrote:
>
>
> Great write-up and mod.
>
> came across another option:
>
> http://www.superbrightleds.com/cgi-bin/store/index.cgi?action=DispPage&category=ACCENTS&Page2Disp=%2Fspecs%2Fulite.htm
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| Re: [GMCnet] Little bit of light - $1 led puck light - GMC NOR CAL RALLY [message #114716 is a reply to message #113244] |
Wed, 09 February 2011 23:43 |
rallymaster
Messages: 662
Registered: February 2004
Location: North Plains, ORYGUN
Karma: -4
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Senior Member |
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I have two of them, Jay. They work well as floor lights in our GMC.
Ours are amber, the white ones put out more light, but not enough to
comfortably read by. Great night lights, though.
RonC
Ron & Linda Clark
1978 Eleganza II
North Plains, ORYGUN
On Wed, 9 Feb 2011 22:53:44 +0000 Jay Rabe <jayrabe@hotmail.com> writes:
>
> Anybody got one of these and can tell us how much light they put
> out?
>
> J
> 76 PB
> Portland, OR
>
> > To: gmclist@temp.gmcnet.org
> > From: cjonesgo@yahoo.com
> > Date: Wed, 9 Feb 2011 16:29:32 -0600
> > Subject: Re: [GMCnet] Little bit of light - $1 led puck light -
> GMC NOR CAL RALLY
> >
> >
> >
> > Great write-up and mod.
> >
> > came across another option:
> >
>
http://www.superbrightleds.com/cgi-bin/store/index.cgi?action=DispPage&ca
tegory=ACCENTS&Page2Disp=%2Fspecs%2Fulite.htm
> >
> > the "ULITE-x3" is $4 and already set up for 12v wired in
> application. Not as creative, but the work is done. Have to
> consider shipping costs as well though, so not the deal that the $1
> dollar tree special is. Still, for all the other projects to do,
> the simplicity of this makes it worthwhile. Lists as being
> waterproof, so good for engine bay etc.
Ron & Linda Clark
1978 Eleganza II
North Plains, ORYGUN
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Ron & Linda Clark
North Plains, ORYGUN
78 Eleganza II
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