LED in RDA?

[vapoholic_91]

hello im a fairly experienced vaper. i started with an ego and an protank 2. ive moved onto mechanicals and rda's. ive been building and vaping on a nemesis with a patriot and a clear cap for a couple months now and have had great success. ive been seeing videos of people putting led's in their rda's and its pretty cool. i wanted to try it but im not 100% sure on how to do it safely. i have some 5mm led's, im wondering if you have to use a resistor with it or if you cant just wire in the pos and neg posts. im using sony 30A 18650's and aw imr 18650's. someone please give me and input you have. thank you!

 

[Johnny Cumulus]

Now this is something I have to see!

Im also into RDA's and love my nemesis clone... I use IGO W(2) and a IGO-W3...

Saw reviews on the patriot, good reviews but the price tag set me away from it, but LEDS inside a clear cap sounds pretty neat! lol

 

[vapoholic_91]

Now this is something I have to see!

Im also into RDA's and love my nemesis clone... I use IGO W(2) and a IGO-W3...

Saw reviews on the patriot, good reviews but the price tag set me away from it, but LEDS inside a clear cap sounds pretty neat! lol

i have the patriot clone and i love it. like you, i did not want to pay the 75 for the real nemesis because i was not sure i would like it. boy was i wrong, however my clone did require a little modding. just simply driling out the air holes for better air flow. the only problem i have with the clone is the o-ring's they are a little softer than i would like, but it hasnt caused any problems. look into the clone, you will not be disapointed!

 

[vapoholic_91]

Can I please have a ADMIN move this to the correct thread... Thank you!

 

[StarsAndBars]

I've found that a coil seems to have much better vapor production and flavor.

 

[MorpheusPA]

It depends on the LED--almost all will require a resistor, except for ones already built to tolerate 4.2 volts. Most 5 mm LEDs aren't, but I'm sure there are exceptions.

You'd want at least a very good idea of the forward voltage of your LED. It varies by color--red at 2.0 or so, green around 2.6, blue and white about 3.3 V. Then you'd use the appropriate resistor to step the battery voltage down to that forward voltage and limit the amperage to within the LED spec, usually no more than 20 ma for a 5 mm LED, but that will tend to be very bright. 10 ma might be a better choice.

Sound complicated? Not really, there are wizards to do it for you: LED series parallel array wizard

When I plug in the data for a standard red LED (4.2 volt source, 2 volt forward voltage, 10 ma output), I get 220 ohms for the resistor to use.

Since the battery voltage will drop as you use it, the LED will be dimmer at the end of the battery life than the beginning. However, to avoid over-drawing power and destroying the LED, it's wise to design for the maximum voltage instead of the average of 3.7.

 

[NatureBoy]

When you connect the LED with a dual coil set up (3 posts), is it recommended to ground the LED on both negative posts?

I hooked an LED just to see what it did, and the one coil it was sharing the connection with started to crackle and pop. I figured if there are two coil loads on the circuit, I should even it out with the LED as well. Correct?

 

[epicdoom]

if you run the led in line with the coil the coils resistance may be enough to get the job done will depend on led and resistance in the coil you build for the atty

 

[NatureBoy]

The blue 3mm LED I have came with a 480ohm resistor. That's probably a bit too much, but can't hurt to try it first. According to the link above, I'd need a 68ohm resistor, if the LED is 3v, 20mah. But that doesn't account for the coils, which totals 0.7ohms, not very much resistance there.