New USB Passthrough I got was DOA, so I improvised...

[first2di3]

This looks awesome, and easy! Can you give us some more info on how you built it?

Where did you get the battery box?

And what size are the batteries? It looks like a AAA but it's a "special lithium battery" so I'm not sure if it's standard.

I want one!!!

I bought one of the 15$ USB Passthroughs for 801's at Eastmall.net with no intention of modding it, but when I received on DOA I decided to mod it...

DSE801 USB passthrough-Black - e-Cigs Penstyle e-Cig 801 - Eastmall International Co.,Ltd

The only thing I needed besides the passthrough itself was Hot Glue, and a electronic switch (that I stole from an old Mouse... but you can get bigger ones from radio shack or something... just make sure its small enough to fit in the casing..)


Here is what I did though...

1: Got the Battery connector out of the battery tube by heating it up with a lighter, then connecting an Atomizer to it and gently but firmly pulling on it... It is super glued in there, but it does not have threads, so you just pull till it comes out..

2: I opened up the battery holder and disconnected the wiring after drawing a diagram to where stuff went..

3: I took varying size screw drivers and carved out a hole the size of the manual button I was going to use into the plastic in the back end... but before I could do that, I had to carefully remove the little piece of plastic that the screw goes into... (I was using a button from an old mouse that was having problems...saved it so one day I would have parts for something, good thing! lol)

4: I then carved out the end the USB adapter was sticking out of to be more round to accept the battery conntector.

5: I hot glued the circuit board down, hot glued the button in place (after soldering the wires in place), then soldered the wires the same way they were before, but instead of a USB plug on the end I had the Battery Connector. Then I hot glued the battery connector in on one side of the plastic after soldering the connections, and tried it out...success!

6: Put more hot glue all around the connector and closed it shut.

Also, at this point I still had the USB cable coming out of the other end so I could use it as a passthrough (you can see the black and red wires in the first picture), but I ended up cracking the thing back open to remove the cable. Then hot glued everything again and closed it up.

The Battery came with the USB Passthrough, it is about the same size as a AAA, but its rated at 3.6 volts like the batteries in an E-cig are.


Been using it for 5 days now and its awesome!

[Slender]

Hi first2di3! You have done a great job! I have made something similar some time ago: http://www.e-cigarette-forum.com/for...b-usb-mod.html

It gets power directly from my laptop and I'm happy with it's performance...

Your device is more sophisticated. I'm just curious what is advantage of using the battery in it? Is it just for some protection of atomiser overheating?

[lucart]

has anybody tried a rc glowplug igniter as a basis for a sd unit

[first2di3]

Hi first2di3! You have done a great job! I have made something similar some time ago: http://www.e-cigarette-forum.com/for...b-usb-mod.html

It gets power directly from my laptop and I'm happy with it's performance...

Your device is more sophisticated. I'm just curious what is advantage of using the battery in it? Is it just for some protection of atomiser overheating?

Hi there!

Actually the way the USB Passthrough comes when you buy one is that the USB plug recharges the battery, and the battery supplies the power for the atomizer. If you take the battery out, you will get no power to the Atomizer.

The reason it works like that is that without the battery, the usb could burn out the port on your computer... so the battery acts as a transformer (if you will) that stores power until it is needed, instead of being always on...

I imagine as long as you don't over do it, getting power directly from the USB port wouldnt hurt anything, but, it might fry your USB port, or even worse, your motherboard...(rendering your computer useless until you replace the motherboard..)

I build all my own computers out of custom parts (Im a gamer ) and I don't want to risk burning out my 170$ motherboard...

In all honesty, mine is very uncomplicated... it looks that way because of the circuit board being there, but it is actually more like this...


The gray wire goes to the outside casing (Negative)

The red wire goes from the positive on the battery, to one side of the switch, out the other, and to the middle of the battery connector (Positive)

[jdm-chard]

you should try to make a socket for that battery adapter so you can switch different battery threads for different ecig models. just imagine, a universal usb passthrough. =)

[Slender]

first2di3 thanks a lot for explanation and for picture. I will try to modify my device...
Just one more clarifying question (may be stupid question as I'm weak in electricity): how do the usb wires go? Should I solder them to "+" and "-" of the battery box? And what about the circuit board? Does the last picture mean the device can work without circuit board? Thanks

[first2di3]

first2di3 thanks a lot for explanation and for picture. I will try to modify my device...
Just one more clarifying question (may be stupid question as I'm weak in electricity): how do the usb wires go? Should I solder them to "+" and "-" of the battery box? And what about the circuit board? Does the last picture mean the device can work without circuit board? Thanks

Actually, the box I got had the Red(+) and Black(-) Wires going to one side of the circuit board, and wires going from the other side of the circuit board to the battery Positive and Negative... I just kept it that way and removed the USB cable when I turned it into a battery only box. The circuit board goes inbetween the USB cable and the battery terminals and the internal programming of the chips only allows current to the battery if the battery is under a certain voltage (to keep it from over charging)

I would say that if you want it to be a "battery usb passthrough" whereas, you want it to charge the battery/use usb power while you have it plugged in, but have the battery still supply power if you go to the restroom or make a sandwich (lol), you will have to have the circuit board because it is what limits the battery from getting over charged and blowing up!

The reason Im getting away with using mine without the circuit being used is I purchased 2 of the same USB Passthroughs, so one is modded and pictured in this thread, the other hasnt been modified and is currently used as a battery charger for the mod... (since I have 2 batteries I can swap)

Basically, you could get these: DealExtreme: $4.32 Ultra Fire 10440 3.6V 500mAh 2Pack (but you might want to get a charger with them from there as well, just look around)

And a Battery Holder from Radio Shack: Enclosed "AAA" Battery Holder - RadioShack.com

Mix that with a dead battery for whatever devise you use (I use an 801, you might use a 901 or something, and in that case, look for Madog's posts as he was able to use a Tire Valve as the battery connector for the Atomizer) and get some kind of pushbutton switch ( Mini SPDT 3-Amp Momentary Pushbutton Switch - RadioShack.com or 3-Amp Soft-Touch Momentary Switch - RadioShack.com ... Basically a small Momentary Switch)

Anyhow if you have any questions let me know, I check here fairly often, but I cant lurk all day like I would like to

[Slender]

Anyhow if you have any questions let me know, I check here fairly often, but I cant lurk all day like I would like to

Thanks first2di3. Now I understand. As I crapped out the circuit board when "created" my usb device I expected that just including a battery will save my laptop from burning and reduce a voltage a bit as producing loads of vapor it eats gallons of liquid and I have to top up the cart after every 10 puffs

[infi704]

This looks like an awesome mod. I was thinking about doing something very similar, but instead of removing the USB passthrough completely, replacing it with a female mini usb port, so the cable can be added/removed at any time..

Something like Part Number 538-67503-1020 on mouser (.) com

[Txrider]

Also, at this point I still had the USB cable coming out of the other end so I could use it as a passthrough (you can see the black and red wires in the first picture), but I ended up cracking the thing back open to remove the cable. Then hot glued everything again and closed it up.

The Battery came with the USB Passthrough, it is about the same size as a AAA, but its rated at 3.6 volts like the batteries in an E-cig are.


Been using it for 5 days now and its awesome!

Is there room to put a female USB connector in the battery box? Or a short cord with a female on the end maybe?

That way your cordless but you could just use any USB cable to plug into it to charge the battery.