Some wiring help for a VV mod

[flyseven]

Hi all - i'm looking for some expert help here If that's OK?

I've been toying with making my own VV mod, but electronics are not one of my strong points (not a good start I know!). After some heavy reading, I stumbled across a thread where someone had suggested using a 25W Step down adjustable switching regulator due to its simplicity... (3A Adjustable step down switching voltage regulator) -- I know its more expensive than other parts available but simplicity is the key.

I've drawn up a simple diagram below to try and size it all up as i'm looking to make my own box, but I'm not sure i've got the wiring correct.

I'm a complete novice at this but pretty handy, so please go easy

 

[mv2envy]

I wouldnt use that chip if I were you. Some reports of it not really being a true 3A reg. Use a Murata OKR-T/6 6A regulator instead. Follow these instructions http://www.e-cigarette-forum.com/forum/modding-forum/191607-easy-okr-t-vv-mod.html

Parts links are also there, just dont use the switch he has linked in there, its big.

 

[WillyB]

You basically want the the fire switch to turn on, provide power from the batteries to the regulator. The regulator's output is directly connected to the atty connector (Vo and GND). I think that's how you have it, the diagram is rather small and hard to see well, which BTW is far from "simple".

Para (Parallex) one of the master modders on this forum has used that regulator a few times, including his newest mod. So has SurvivorMcGyver (an old time vet) and many others. It also appears to be a mainstay in many of the commercial VV wooden juice feeders.

The link provided to the OKR build will result in a mod that is running out of spec voltage wise. The builder obviously failed to read or didn't understand the datasheet. Best to note what CapeCad (who first used the OKR almost a year ago) has to say about proper resistor values.

http://www.e-cigarette-forum.com/fo...oolgate-variable-voltage-mod.html#post2478637

 

[mv2envy]

Big woop Willy, so use a 220ohm resistor instead of 200! Not a big freaking deal!

 

[jmanning]

I have mods built with both the SWADJ3 and the OKR/T. They both work great and equally well. I robbed a plug from an old computer and plug the SWADJ into it, so it is easy to replace if I had to.

 

[flyseven]

Cool. I think the SWADJ is the simplest option for me for now. Does the wiring diagram above look right to you?

Cheers bud

 

[TomCatt]

You can pick up some "all in one" type step-down DC regulator boards on ebay. Here's the first that I saw on a quick search. They are usually cheaper than the SWADJ3 and have simple +/- IN and +/- OUT connections.

DC-DC StepDown Adjustable Power Supply Module LM2596 | eBay

 

[BJ43]

LM2596-m DC-DC Step Down Adjustable Power Supply Module | eBay

I used one of these to build my VV Mod

http://www.e-cigarette-forum.com/forum/battery-mods/220307-vvbox-vvpassthru.html:vapor:

 

[VpnDrgn]

I see a lot of threads lately, where beginners are asking for parts lists and schematics on chips not commonly used,
( granted, they don't appear to be doing any searches of their own ) and all the "experts" chime in with all the chips
they "should" be using. What's up with that?! The chips commonly used now, were not common 1 or 2
years ago ( or more recently ) when somebody first figured out how to make them work for our uses.

Other than the limited amps, I don't believe I have seen anyone post problems with the SWADJ3 or the LM2596.
As long as the modder keeps in mind that upper voltage will be limited by LR atties and cartos ( including the
widely popular DC cartos ), performance should be fine.

A lot of the "old hands" like to look down on the pre-made modules, but I think they give a lot more people the
opportunity to try making their own mods ( focusing mainly on the enclosure ), without being intimidated
by trying to solder their own circuits.

Fly7 - I don't see your diagram that you refer to, but like Willy says, it is fairly simple.
- connector pos goes to V out
- batt pos goes to V in with switch in line
- connector ground and batt ground go to ground on VV module
- voltage meter goes from switch pos to connector ground with on/off switch in line on the pos side

I don't currently have the software I like to use for drawing on my current comp, maybe one of the guys
will post a quick diagram.

Something everyone might want to keep an eye out for, a couple of members have stated that they have talked
to Dimension and they may be working on something targeted more to our uses.

Vape On People

 

[flyseven]

Thanks to everyone who have replied and helped on this one... i really appreciate it!!