Anyone had a go at making an atomiser?

[jigtg]

I've been looking for a capacitor in that range size but I couldn't find one. I am assuming that the power draw is 4 watts but you're right I didn't account for voltage drop from the battery under load. unfortunately it would be very difficult to measure this. However with the larger power batt i plan on using i think the voltage drop would be much lower and keeping the voltage near 3.7. In addition, using a cap, you get a steady and predictable voltage drop, starting at whatever you charge it to (3.7) down to the cutoff voltage, which is typically considered 63.2% of the original voltage which would be 2.33v
I might be able to help you with your problem with the FET over heating, but it's been a while since i've done something like that. Beautiful PCB though, I can appreciate work like that.

See Digi-Key - 589-1010-ND (NessCap Co Ltd - PSHLR-0030C0-002R3) and Digi-Key - 589-1002-ND (NessCap Co Ltd - ESHSR-0010C0-002R7) .

You can take the cig apart, add wires and measure. Blow through the led side to activate. I have posted voltage readings on vegas disposable. Coil resistances of all devices I own are also there. Coil temperature readouts, some models of different types of wire layouts...

Just added 12K resistor to pull gate down and it now works as expected. Using FDN335N. Tested at 1 amp load and no noticeable heating. Circuit turned out being so simple it would have been easier to solder everything on attiny. I'm glad you like it. Having spent ridiculous amount of time to be able to print layouts directly to pcb it better be good
Plan to turn it into a battery capacity meter later on.