Reverse-engineering "Logic" e-cigarette with open-source alternative
I was bored.
Got a broken spare, but main IC had its pin eaten by corrosion.
Since I can't do bonding-wire-level soldering I decided to sacriface this one.
The circuit is actually very, very simple.
There are 5 main subcircuits:
- battery (-) isolation
- output
- charger
- piezo input
- indicator LEDs
The circuit seems a bit messy now. I'm trying to figure out parts used in this.
Unfortunately finding exact parts will be a bit hard (SOT-xx markings, eh?), but I feel like some people might find something suitable based on their experience.
Yeeeeeah. Another project I'm going to start and abandon after a week. It's nothing hard though. Once "somewhat suitable" parts are found, the rest of the work boils down to redoing the PCB.
Just a schematic. For now. Let's see if this takes off.