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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Homemade LED ceiling light.
I was thinking about bulding at least one.I think I would drill a lot of
holes in a cheap wide shallow plastic bowl and put LED bulbs in the holes and connect to wires to a battery holder which would lay inside of the bowl and have three strings so as to hang the light evenly (sort of like those hanging potted plants) from my living room ceiling light, the little brass threaded ferule which holds the glass clobe on to the original ceiling light, I can make a little wire hook to hang the light from.This would be for if the electric power gets knocked out (stormy weather, whatever) for an extended lenght of time.I was wondering how well something like that might work out? If it works ok, I can build more LED battery powered ''ceiling lights'' for other rooms in my house. cuhulin |
#2
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Homemade LED ceiling light.
wrote in message ... I was thinking about bulding at least one.I think I would drill a lot of holes in a cheap wide shallow plastic bowl and put LED bulbs in the holes and connect to wires to a battery holder which would lay inside of the bowl and have three strings so as to hang the light evenly (sort of like those hanging potted plants) from my living room ceiling light, the little brass threaded ferule which holds the glass clobe on to the original ceiling light, I can make a little wire hook to hang the light from.This would be for if the electric power gets knocked out (stormy weather, whatever) for an extended lenght of time.I was wondering how well something like that might work out? If it works ok, I can build more LED battery powered ''ceiling lights'' for other rooms in my house. cuhulin Why not make use of the stick-on battery powered LED lights that are made specifically for such things as power outages ? They are dirt cheap here in the UK, and seem to work quite well. I'm sure you could find something like a plastic plate to stick it to, in order to make your 'hanging basket' arrangement ?? Arfa |
#3
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Homemade LED ceiling light.
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#4
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Homemade LED ceiling light.
"Arfa Daily" wrote in message
... Why not use the stick-on battery-powered LED lights made specifically for such things as power outages? They're dirt- cheap in the UK, and seem to work quite well. I'm sure you could find something like a plastic plate to stick it to, in order to make your "hanging basket" arrangement. Seconded. I bought a pack of three stick-on lights, each with five white LEDs, for less than $13 total (batteries included) at Costco. |
#6
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Homemade LED ceiling light.
I have three little LED flashlights, one of them also has a little
skinny flourascent light (not much thicker than a coathanger wire) running along the side of the flashlight.I also own six battery powered flourascent camp type lanterns, one of them is a Sears rechargable that I bought at the Goodwill store, but I don't have the adapter for the light. I have several small inverters and a lot of Everyready AAA and AA and C cell and D cell rechargable batteries with two Eveready rechargers.If I plugged one of the battery rechargers into one of my inverters, (12 volt D C to 120 volt AC) and connect the inverter to the battery in my van, wouldn't that charge the batteries up ok? cuhulin |
#7
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Homemade LED ceiling light.
William Sommerwerck wrote:
"Arfa Daily" wrote in message ... Why not use the stick-on battery-powered LED lights made specifically for such things as power outages? They're dirt- cheap in the UK, and seem to work quite well. I'm sure you could find something like a plastic plate to stick it to, in order to make your "hanging basket" arrangement. Seconded. I bought a pack of three stick-on lights, each with five white LEDs, for less than $13 total (batteries included) at Costco. I found 'em at an 'everything's a dollar' store for...well, you know. Found some at wally-world being closed out; four for $3.something...including batteries. The other day, I found an LED spotlight being closed out at Walgreen's for $3. It had a solar cell, three white LEDs, a charging circuit and two AA NiMHs. Alas, there was only one.... jak |
#8
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Homemade LED ceiling light.
On Mon, 28 Jan 2008 01:07:47 GMT, mike wrote:
If you have lots of extra cash to burn, buy a led flashlight. They make 'em with as many zillion lights as you want. And they're cheaper than buying leds in low quantity. The "Dollar General" had some led flashlights for $4 sans batteries. 14 LEDs and 3 AAA batteries. It's the first light I reach for. I agree, ledshoppe and dealextreme, both good sources for LEDs and flash lights. You may get a dud when buying hundreds of leds but that is rare. In 300 leds I had 4 bad ones from ledshoppe. http://www.dealextreme.com/details.dx/sku.3874 Ready made light for what the poster contemplates with 100+ degree beam spread. -- |
#9
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Homemade LED ceiling light.
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#10
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Homemade LED ceiling light.
In article ,
says... In article , wrote: I was thinking about bulding at least one.I think I would drill a lot of holes in a cheap wide shallow plastic bowl and put LED bulbs in the holes and connect to wires to a battery holder which would lay inside of the bowl and have three strings so as to hang the light evenly (sort of like those hanging potted plants) from my living room ceiling light, the little brass threaded ferule which holds the glass clobe on to the original ceiling light, I can make a little wire hook to hang the light from.This would be for if the electric power gets knocked out (stormy weather, whatever) for an extended lenght of time.I was wondering how well something like that might work out? If it works ok, I can build more LED battery powered ''ceiling lights'' for other rooms in my house. cuhulin It seems like a lot of work. I was going to install a bunch of LED ceiling pot lights, mostly in the kitchen. I was going to use X10 to control them. I found out X10 is not supposed to work with wall supplies and the light from normal LED's is too blue. Warm LED's are available now, so any light I install will have to be the warm type. They are also essential for art display lighting. The LED's I bought are 3 watt Luxeon for about $6 ea. The LED lanterns and flashlight are so cheap, that you should reconsider. I d think its very nice to have a house emergency supply of ceiling and floor runners, as a backup, and you can even use them all the time as added convenience and styling using different colors. greg Check out this site I saw in another NG. http://www.emanator.demon.co.uk/bigclive/joule.htm It has a simple design to get the most out of the batteries. Lot's of other cool stuff on his site too. Just move up to the bigclive folder. - Tim - |
#11
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Homemade LED ceiling light.
On Mon, 28 Jan 2008 12:12:55 -0400, Tim wrote:
In article , says... In article , wrote: I was thinking about bulding at least one.I think I would drill a lot of holes in a cheap wide shallow plastic bowl and put LED bulbs in the holes and connect to wires to a battery holder which would lay inside of the bowl and have three strings so as to hang the light evenly (sort of like those hanging potted plants) from my living room ceiling light, the little brass threaded ferule which holds the glass clobe on to the original ceiling light, I can make a little wire hook to hang the light from.This would be for if the electric power gets knocked out (stormy weather, whatever) for an extended lenght of time.I was wondering how well something like that might work out? If it works ok, I can build more LED battery powered ''ceiling lights'' for other rooms in my house. cuhulin It seems like a lot of work. I was going to install a bunch of LED ceiling pot lights, mostly in the kitchen. I was going to use X10 to control them. I found out X10 is not supposed to work with wall supplies and the light from normal LED's is too blue. Warm LED's are available now, so any light I install will have to be the warm type. They are also essential for art display lighting. The LED's I bought are 3 watt Luxeon for about $6 ea. The LED lanterns and flashlight are so cheap, that you should reconsider. I d think its very nice to have a house emergency supply of ceiling and floor runners, as a backup, and you can even use them all the time as added convenience and styling using different colors. greg Check out this site I saw in another NG. http://www.emanator.demon.co.uk/bigclive/joule.htm It has a simple design to get the most out of the batteries. Lot's of other cool stuff on his site too. Just move up to the bigclive folder. - Tim - That's a good schematic for a tiny voltage booster. I dates back to vacuum toobs and is called a "blocking oscillator." One application was the vertical oscillator in TV sets, another was audio code practice oscillator using a tapped audio output transformer. This guy is talking about a large number of LEDs so it is interesting that you present that method. I use it as a boost converter for 3V circuits as a bias supply for turning on mosfets - open circuit they can put out upwards of 80 Volts with no load - so with some attention to raising the power a little it might work a large string of LEDs from a single 1.5 V cell. No load, and it may destroy the transistor with the HV spike. -- |
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