Hi All,
I'm new to the forum and I've been trying to get my head around some basic electronics stuff but I'm having a hard time figuring out what I need for my specific projects.
What I'm trying to do is use atmospheric, low light LED's in some art/craft projects I'm doing. Basically, I'm trying to integrate LED's in wood and other projects. The light does not have to bright, and in most cases rather dim and soft. I'm thinking a single LED bulb (or short strip) would suffice.
The other requirement is that I would be able to use as a power supply the typical USB style charger as may come with your smartphone or tablet or what have you.
It looks like most of these chargers are 5v output, and range between 750a and 1.5a, although I have a Samsung charger that lists 5.0v -- 2a.
My plan was to integrate microUSB ports into the wooden craft pieces, so that you could just plug in a microUSB cable into the piece and plug the other end into one of those phone chargers (some charges have permanently attached wires with microUSB ends). I would also have to integrate an on/off switch into the piece so that the usb wire could remain hooked up.
In trying to figure out what I would need specifically for this. Here are some questions I have:
a) Since the various phone chargers have different amp specifications for the output (750ma, 1a, even 2a) does this mean I cannot regulate the light output of the LED(s)?
b) I have read about resistors and the calculations regarding Ohm's law and the LED(s) used, but would this be thrown off if different phone chargers would be used like 750ma or 1.5a?
c) I have read about one way to dim LED's by means of a variable resistor or potentiometer. Is this a safe and reliable method? I read some people consider it wasteful as it results in waster energy as heat (and heat is always considered bad for longevity).
d) Since I'm looking to dim the LED's brightness to atmospheric levels (like a candle light, basically) is this bad for the LED as far as longevity?
e) Would it be best to use a single LED with prongs or would it be better to use a partial strip of 3 LED's?
I won't make this too long to start but hopefully you guys got an idea of what I'm trying to do and if this is possible or not. Basically those USB chargers would be my power supply of choice because it would allow you to plug in the art pieces easily, anywhere, since those USB chargers are everywhere. One other consideration I had was ability to change out LED's in case they burn out or go kaput. So I was thinking this would be easiest with those single LED's with prongs. I guess that would be another question, which would be the most reliable LED's.
Thanks for any input!
I'm new to the forum and I've been trying to get my head around some basic electronics stuff but I'm having a hard time figuring out what I need for my specific projects.
What I'm trying to do is use atmospheric, low light LED's in some art/craft projects I'm doing. Basically, I'm trying to integrate LED's in wood and other projects. The light does not have to bright, and in most cases rather dim and soft. I'm thinking a single LED bulb (or short strip) would suffice.
The other requirement is that I would be able to use as a power supply the typical USB style charger as may come with your smartphone or tablet or what have you.
It looks like most of these chargers are 5v output, and range between 750a and 1.5a, although I have a Samsung charger that lists 5.0v -- 2a.
My plan was to integrate microUSB ports into the wooden craft pieces, so that you could just plug in a microUSB cable into the piece and plug the other end into one of those phone chargers (some charges have permanently attached wires with microUSB ends). I would also have to integrate an on/off switch into the piece so that the usb wire could remain hooked up.
In trying to figure out what I would need specifically for this. Here are some questions I have:
a) Since the various phone chargers have different amp specifications for the output (750ma, 1a, even 2a) does this mean I cannot regulate the light output of the LED(s)?
b) I have read about resistors and the calculations regarding Ohm's law and the LED(s) used, but would this be thrown off if different phone chargers would be used like 750ma or 1.5a?
c) I have read about one way to dim LED's by means of a variable resistor or potentiometer. Is this a safe and reliable method? I read some people consider it wasteful as it results in waster energy as heat (and heat is always considered bad for longevity).
d) Since I'm looking to dim the LED's brightness to atmospheric levels (like a candle light, basically) is this bad for the LED as far as longevity?
e) Would it be best to use a single LED with prongs or would it be better to use a partial strip of 3 LED's?
I won't make this too long to start but hopefully you guys got an idea of what I'm trying to do and if this is possible or not. Basically those USB chargers would be my power supply of choice because it would allow you to plug in the art pieces easily, anywhere, since those USB chargers are everywhere. One other consideration I had was ability to change out LED's in case they burn out or go kaput. So I was thinking this would be easiest with those single LED's with prongs. I guess that would be another question, which would be the most reliable LED's.
Thanks for any input!