Thanks for the reply I've taken a look at replacing the voltage regulator maybe I'll leave that for when I'm a little less of a noob. I'm still trying to figure out precisely what went wrong, I didn't put the 12v straight into the system, I used an lm1117v33 to downstep the voltage. My problem is I didn't take action to reduce the current and now my widdle arduino pays the price.
The esp is actually fine, it's the arduino that's buggered.. The little chip next to the T16000 is overheating 