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I just installed one of those transistors today. Works like a fcking charm and doesn't get too hot. I didn't bother measuring, but it works fine. I probably won't get the thing working until tuesday, because the gate pin is dead.. a casualty of the other day. I'll just reprogram it to use the...

As long as the pic can provide sufficient charge to both gates. I'd try it out and see.

Ok. Got some of those transistors (fdb8832) in the mail. This is gonna be exciting when the transistors stop melting. For you LED try a larger resistance maybe? I forgot to take into account in my other project the heater line is only seeing 3.3v. I've never had an led die with that set up...

I have a temporary solution before I get new transistors ordered. I will use another transistor to give the mosfet 12v from the PSU.

So what is your problem then? Your transistor is fine, but your Vreg is not providing enough voltage to you circuit?

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=NDB6060LCT-ND This might work. It's listed under Logic Gate MOSFET's which seems appropriate.

Wow. Ok. I was retarded and misread threshold and gate as being the same thing without consulting wikipedia first.

I had lead free, but I used it up. I have an infinite supply of leaded solder...so that ends up being what i use. There is a radioshack though. I guess I will go buy some when I go buy a project box. I just snapped the shitty plastic box I made. I finally ran the vape without killing the...

It shouldn't cause a short.... + ==heating element ==Drain +==330ohm resistor==LED==Drain

Also I gotta say that I hate lead solder, tho that is all I have right now. The vape smokes with lead fumes the first few times it gets run..

I think I said something about clamping before, the way to fix that put a resistor before the LED with it in parallel with the heating element. That is how I have duty cycle indicator LED's in other projects. The stuff about the mosfet is interesting. My mosfet has a gate of 3-5v but is rated...

Is it just me or did your method for attaching the heating elements change in these last set of picture?

Ah! Is your transistor is standing up! lol. I hadn't notice that before. The backs of my transistor pcb's are getting real hot and browning. That seems like a better idea. Also, my transistor, which unfortunately i have about 15 of seems to want 5.2V? I got a diff supply, so tomorrow I'll hack...

I've also done slits, which are much easier than holes and with a dremel and abrasive wheel.

In most pcb design software you should be able to select a generic 8-pin soic to lay down the pads. It was running my software. The mosfet melted cuz i overloaded it with approx.18-20A. It heated up to 160C within 5-10s or however long it took me to notice the smoke. Future versions of my pcb...

Have you thought about mounting the buttons in the bottom wood disc opposite the LED? I think that would make sense because the user could reach around and mess with the buttons while watching the led. Anyway, I got back from vacation and I was itching to get the vape working right. I've been...

If you happen to have jumpers it may be the easiest thing. Just place the normal operational connections on jumpers so you can disconnect them if they cause problems. I haven't gotten around to doing any work. Probably won't until at least saturday or sunday

I really wouldn't worry about the IP too much. Most "digital" branded vapes use PID. There a tons of vapes, including many that are built in places that could care less about IP laws in the US or Canada. Also, for many embedded designers, vapes are really trivial. It's just a PID heater that...

Hey Norb, have are you still using your old control implementation or have you migrated to PID? I just got my boards in and they look good. Once all the SMT parts arrive (friday or monday) I will have more pics, this time with better packaging.

Here we go. Finally images. I broke my oven tube tho right before the pics. I'll grab a spare tomorrow. Here the whole thing. Screenshot. Note, I only roll with metric units. I also have a version that has a progress bar. Down the Barrel. Wanna kno what happens when you short really bad...