Pretty soon ill be starting on my first mod. I know ill need LEDs and resistors at some point, but no idea what ill need, untill i need it. And you know how it is when you find out you need somthing and have to wait days for it! So i was wondering if anybody has seen a pack (pack, selection, box, whatever you want to call it) with a selection of the most common LED's, Resistors and other misc bits we need from time to time so i can have them at hand when they are needed?
Beginners Supplies
- Thread starter Dale.s
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Actually, I'd like to know what kind of resistors to get also....
If I take two 3.7 batteries (any size) and stick them end to end with a switch and atomizer - what else do I need to keep it around 5v? Resistor? Regulator? - this is where I get fuzzy - my electronic skills are non-existant....
If I take two 3.7 batteries (any size) and stick them end to end with a switch and atomizer - what else do I need to keep it around 5v? Resistor? Regulator? - this is where I get fuzzy - my electronic skills are non-existant....
I'm working out the details as I go along. As far as parts go, my first flashlight mod needed only a momentary switch that I picked up at Radio Shack for $3.
My first mod was a simple 6V flashlight. I didn't bother with LEDs. My current plan will have an LED. Yes... the modders project evolution spirials out of control very quickly. Adding in voltage regulartos, dc-dc boosters, etc requires some experience. Get you feet yet on a simple 3.7 mod first.
Suggested tools:
will to learn
Voltmeter
Dremel
drill
various drill bits
17/32 drill bit (for the atomizer connection)
patience
soldering iron kit
miscellaneous debris
Why flashlight mods are so easy...
1. The body is already assembled.
2. The flashlight will already have some kind of pcb that will be grounded to the flashlight body (which acts as the ground) Therefor, you only need to wire in the atomizer connection.
3. The wiring goes something like:
There are plenty of people on the forums that will help you out if you have any question.
Basically... start small, then start adding features, then go big, then troubleshoot why it isn't working, then go big.
db
My first mod was a simple 6V flashlight. I didn't bother with LEDs. My current plan will have an LED. Yes... the modders project evolution spirials out of control very quickly. Adding in voltage regulartos, dc-dc boosters, etc requires some experience. Get you feet yet on a simple 3.7 mod first.
Suggested tools:
will to learn
Voltmeter
Dremel
drill
various drill bits
17/32 drill bit (for the atomizer connection)
patience
soldering iron kit
miscellaneous debris
Why flashlight mods are so easy...
1. The body is already assembled.
2. The flashlight will already have some kind of pcb that will be grounded to the flashlight body (which acts as the ground) Therefor, you only need to wire in the atomizer connection.
3. The wiring goes something like:
Battery Pos -> switch lead 1 - switch lead 2 -> atomizer outer ring. Then ju2t wire the atomizer connection inner ring to battery neg
It's really quite simple without LEDs. If you start adding in LEDs, then you may or maynot need to include resistors. The LED data sheet will tell you that.
There are plenty of people on the forums that will help you out if you have any question.
Basically... start small, then start adding features, then go big, then troubleshoot why it isn't working, then go big.
db
Regulators regulate voltage.
Resistors resist current.
Common 5V regulator
(Just search on RadioShack.com for "5v regulator"... I can't post urls yet)
This will take voltage up to 35V and output a consistent 5V. Since you wont stack batteries at greater than 7.2V this is fine. (also, you'll never get 7.2V to the atty anyways)
Resistors are dependent on the component you are adding. Sometimes needed, sometimes not. (yeah... still kinda fuzzy on how much current is drawn from the different types of batteries.)
db
Hmm - okay I found the 5v Regulator, of course RS doesn't give me any dimensions - but I'll get one anyway to play with.... - Question to you DB, what happens if I only run 3.7 through the regulator? It just passes it through? Kinda like a hole in a wall? (Anything LESS than 5v gets though - nothing more?)
Off to figure out resistors now! Thanks!
Off to figure out resistors now! Thanks!
I have tried that regulator and I have to tell you, I could not get it to run my atty. Dont know if it lowerd the amperage too much or what.. Get the ones from Texas Instruments....
I think the 5v VR needs more then 5volts to run, but won't let any more then 5 volts through.
For LED resistors, I've been using 100 OHM for my 3.7V mods, and 330 OHM for my 5v mods. The longer leg of the LED is the positive end, and it does matter. However, the resistor can (in theory, I haven't tried it) go on either the plus or neg. leg of the LED.
For LED resistors, I've been using 100 OHM for my 3.7V mods, and 330 OHM for my 5v mods. The longer leg of the LED is the positive end, and it does matter. However, the resistor can (in theory, I haven't tried it) go on either the plus or neg. leg of the LED.
Check out this page I just stumbled across:
www dot rc-cam dot com/dc-dc.htm
"With 78xx parts, the input voltage must be at least 2V higher that the output voltage. For 5V use, a 7805 's battery needs at least 7VDC. Allowing input voltage to go below this spec can result in odd behavior."
I'm not really sure what they mean by odd behavior.
If you want to run a mod at 3.7V / 5V (sounds like you are going for 18650 / two CR123A regulated) why not just build two of the same mod at different voltages. Why have one when you can have two for twice the price?
Regarding the resistors, link a few examples of LED you where thinking about. The datasheets will state their info. Based off of that, we can find the resistance needed.
Same page as above but on LEDs.
www dot rc-cam dot com/lef_info.htm
db
p.s. Buyer beware... I'm learning this stuff as I go, so if I give some bad info, I wont know it until I try it... or you try it.
This is why I hadn't posted any questions about his earlier... Y'all making my head hurt with all of this electronic talk!
The mod I am thinking about making, just for giggles, is a simple basic 'Fog Log' - but with the option of using one 14500 or two 15270s - and then bling-ing it out from there... Something that is voltage dependent on the number of batteries used... Make sense?
And my apologies to Dale.s for hijacking his thread!
Yeah absolutely! I'm running a flashlight mod that can use two rcr123A or a 18650. I did bother with a regulator though. However, since this thread has started, I'm building another one that will be regulated to 5V. I'm curious to see if the information I'm feeding everyone is correct.
db
Don't use the radioshack 7805 voltage regulator. It has a high stepdown (it means that it will work just when you give it more than 7.3-4 volts). The 3.7 v batteries are 4.2v when fully charged and the cut off is at 2.5v.
So, with the radioshack voltage regulator you will be able to vape only when the batteries are fully charged (or 70%).
You should read the thread where we discuss it. There is the link and the right name of the chip to get from TexasInstruments (they send you 5 samples for free) and that one works perfectly, using the batteries till 5.5 volts
So, with the radioshack voltage regulator you will be able to vape only when the batteries are fully charged (or 70%).
You should read the thread where we discuss it. There is the link and the right name of the chip to get from TexasInstruments (they send you 5 samples for free) and that one works perfectly, using the batteries till 5.5 volts
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