Nicely done Parallex2,
Tell me about the meter that you're going to use. Seems like a necessity if your using a variable resistor.
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Nicely done Parallex2,
Tell me about the meter that you're going to use. Seems like a necessity if your using a variable resistor.
5card what is the parts # on it looks like a good one to play with. 
That is a sweet mod.
I picked this one up a couple mo. ago on ebay and I'm going to use it one of these days. It has the on off switch right on the board.
Here is the details. He backed it up too because I couldn't get it to work so he sent me a replacement plus the parts to rebuild the original one.5card what is the parts # on it looks like a good one to play with.
http://cgi.ebay.com/ws/eBayISAPI.dl...5vRrpgeF4Pm9Vc5Pw%3D&viewitem=#ht_3058wt_1139
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im making mine. maybe it'll be ready by next year. today i glued together my battery contact and my battery/atty connector with lowels liquid catcher/finishin washer. need to do all the soldering and it kinda scares me. im traumatized since the day i vaped on the hot solderin iron by mistake
i didnt actually vape on it. just got it in between my fingers like it was a cig than i had to let go. maybe if i wasn't drinking i wouldn't have done it or maybe if i was drinking even more i would have brought it to my mouth. i did quit drinking now. its been almost 8 months booze free! yay!!!
Going back to original post and the converter, I noticed it states on mdfly's website that ( The input voltage must be 3V higher than the desired output voltage.) Is that what you guys are doing here or did I miss something ?
That doesn't make sense, as that would mean that set at 5.5V output it would not even fire.
From the chip's (LM2596S-ADJ) datasheet the DOV input-output differential (V) chart seems to indicate about 1.3V, which makes more sense.
From another forum, a member who built it exactly like Mamu, except with slightly larger cells.
I also know that Mamu is a 5+V vaper.
Thanks WillyB, I actually double posted this question because my internet was screwy that night. Thanks for the info. I didn't think that was right
Sorry to bring back a fairly old thread, but I'm intrigued by this and now want to try one of my own!
Just ordered 2 of these
LM2596 Step Down Adjustable DC-DC Power Supply Module - eBay (item 120631004621 end time Mar-06-11 00:05:23 PST)
The specs seem to be the same as the other ones mentioned, but I like the size dimensions better. Will this work? The one thing that threw me off when I went back to look at it was this quote:
"3. Output 1.5-33.5V adjustable (building load debug) We default shipping 5V voltage regulator for other voltages can be their own or purchase."
But I'm thinking I'll be alright because the key word in there is adjustable, and the fact that they give a voltage range rather than a single output rating eases my mind a bit.
Just ordered 2 of these
LM2596 Step Down Adjustable DC-DC Power Supply Module - eBay (item 120631004621 end time Mar-06-11 00:05:23 PST)
The specs seem to be the same as the other ones mentioned, but I like the size dimensions better. Will this work? The one thing that threw me off when I went back to look at it was this quote:
"3. Output 1.5-33.5V adjustable (building load debug) We default shipping 5V voltage regulator for other voltages can be their own or purchase."
But I'm thinking I'll be alright because the key word in there is adjustable, and the fact that they give a voltage range rather than a single output rating eases my mind a bit.
I think they are trying to say that it ships preset to a output of 5 volts. My best guess anyways. It should work fine for a mod. Not the greatest efficiency rating for the lower voltages but for sure will do the job. LM2596 - SIMPLE SWITCHER Power Converter 150 KHz 3A Step-Down Voltage Regulator
Good to hear, thanks Java_az.
One more question, do you all think it would be doable to put the regulator in the box on its side (with adj screw facing toward the outside of the box, with a hole in the side of the box to get a screwdriver in for adjustment)? I'm thinking that, if this is doable, I can fit the regulator, 2 CR123s, and a 3ml juice bottle in a 3x2x1 enclosure. I'm going to pick up a 3x2x1 today and a 4x2x1, and make some test pieces out of cardboard or something and see if I can make it all fit.
So I decided today that 2 14500s would work best in the 3x2x1 if I'm able to put the regulator in on its side.
WillyB, are you saying to avoid having the components of the board up against the plastic, or the bottom of the board, or both?
WillyB, are you saying to avoid having the components of the board up against the plastic, or the bottom of the board, or both?
Here's a pic of what I'm planning on doing. Are you just saying I should leave some space between the board and the bottom wall of the box as well as the battery compartment above it?
Well, I will see how it goes being on its side and all, and report back, as I'm sure doing this would be preferable for some who want to cram more into a smaller space
I've also got a free TI sample regulator on the way so I'll have to make one of those boards as well and give it a go.
I've also got a free TI sample regulator on the way so I'll have to make one of those boards as well and give it a go.
Good luck getting all that to fit, I had a hard enough time just fitting my evercool with 2 16340's in a 3x2x1
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