Vaping mod based on arduino pro mini with thermocontrol and other functions
This mod works with 2S (two cells) Li-Ion/PO batteries. I've used one for RC models - 25/35C 500 mAh. Resistor R5 should be 0.25 watts at least.
The "LED" output is for flashlight's leds.
Note, this branch is for version 2 (with P-FETs), use branch "OLD_5V_AREF" for version 1 schematics.