Here's what I want to make a VV mod with LOL.
Amazon.com: Doctor Who Sonic Screwdriver Flashlight: Toys & Games
Amazon.com: Doctor Who Sonic Screwdriver Flashlight: Toys & Games
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Here's my take on building a tube mod version of the MV VV kit... I made the housing on my mini lathe... holds two 1630s or two 18350s. Voltage contron is currently recessed, but I'm machining up a knob for it this weekend to make it tool-less adjustment. It's a pretty darn great VV mod... Thanks Hoogie!
Zen~, that is gorgeous! I am envious of your metalworking ability. I have a wood lathe, but when it comes to metal, I'm stuck with whatever I can cobble together. Very nice work.
Thanks for the compliment! I'm still in the process of learning my way around a metal shop, I'm self-edge-a-ma-cated in machining. The more PVs I make, the better I get. I'm getting close to buying a better lathe and also a milling machine.
How forgiving is the regulator when it comes to heat? I bought a couple of the VV kits, and it looks like you solder the pins to pads, no holes. I don't have any heat sinks small enough for those pins, so is there a risk of burning it up when soldering it?
I'm not great at soldering, but haven't had any problems with them. I just put a small drop of solder on the tip and touch it to the pin and pad and it works fine. The chip gets hot, but works perfectly.
I haven't found a heat problem with the chips yet but I do find that the easiest and fastest way to solder then on the board is to the tin the runs on the board then put the chip in place and just touch each leg wih the soldering iron so it sinks into the solder on the runs. I also solder the heat sink part of the ncp630 to the larger pad on the end of the board..
hoog
hoog
Assuming Madvapes sells all the parts, it would be great to put instructions with a parts list up in your How-To section. I'm a little unclear what's needed and I'd like to build one of these.
If you look at the second picture down for the kit on the Madvapes site, it's pretty simple. He has drawn in all the connections except the two resistors, and a look at the board will show you where to solder those.
Only thing that might have been a little less confusing is if "battery connector" had been labeled as atomizer connector, that threw me for a minute.
Madvapes kit here: Variable Voltage Regulator Board Kit Rev 2
Only thing that might have been a little less confusing is if "battery connector" had been labeled as atomizer connector, that threw me for a minute.
Madvapes kit here: Variable Voltage Regulator Board Kit Rev 2
Hate to bring up an old thread, but I didn't want to start a new one. I just finished building my first vv board with the madvapes kit. I don't have it in an enclosure yet, but tested it out with an atomizer and 2 14500's. It works great. I was able to get 7.2 volts (without a load). Build was really easy.
As I said in the previous post, the pic Hoogie has showing the wiring for it is perfect. Soldering the regulator was also really simple. Just use a toothpick to apply flux to the pads and the solder flows right where it should. I probably added more time than needed, but I fluxed and tinned each pad one at a time, wiping the board clean after tinning each pad to make sure there was no flux where I didn't want it.
Now I just need to figure out an enclosure. I'll probably use a project box, if I can't find a good tube of some kind.
As I said in the previous post, the pic Hoogie has showing the wiring for it is perfect. Soldering the regulator was also really simple. Just use a toothpick to apply flux to the pads and the solder flows right where it should. I probably added more time than needed, but I fluxed and tinned each pad one at a time, wiping the board clean after tinning each pad to make sure there was no flux where I didn't want it.
Now I just need to figure out an enclosure. I'll probably use a project box, if I can't find a good tube of some kind.
Ok, something is not right, hubby put this together but it will not go any higher than 5.2, it appears to be wired just like the diagram, any Ideas?
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fully charged they are testing at 4 volts +or - (he has an old meter 
)
He actually did get it up to 6 volts without an atomizer, he cleaned up the solder points a bit, so that did help.
)He actually did get it up to 6 volts without an atomizer, he cleaned up the solder points a bit, so that did help.
oops, did not get back in time to answerer that, he got to use it for about 6 hours, and It died today. so he is taking it all back apart, but it does get 6.8 volts before it goes through the board, and now nothing after the board.. oh well he loved it while it lasted.
Edit: ok got it working again after taking it all apart and redoing it, now getting 6volts at the atty connection, he is happy with that if that is what it is going to get , just kinda weird
Edit 2: worked for about 3 puffs and Died again GAH!
Edit: ok got it working again after taking it all apart and redoing it, now getting 6volts at the atty connection, he is happy with that if that is what it is going to get , just kinda weird
Edit 2: worked for about 3 puffs and Died again GAH!
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Sounds like the current is so high the regulator is overheating... Disconnecting then reconnecting the battery probably resets it... Reason is atty resistance is too low for the voltage level... Is the top "tab" of the regulator soldered to the board?
Also, one of the cells may need a charge and the protection circuit on th battery may be shutting you down.
Also, one of the cells may need a charge and the protection circuit on th battery may be shutting you down.
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