Hi there, today I had funny situation(not for me) when I was working on my project I connected nano esp32 a little wrong to my custom board. It was moved by one pin(see on picture). When I connected the arduino usb cable it started to heat up and stink... I am 99% sure that it is a short circuit in processor but a wanna someone to confirm it for me.
sry for my eng))
Remove the esp32 from your PCB and turn of the power. Test with your multimeter. Maybe there is a manufacturing error. Traces often gets overlapped and create unexpected short circuit.
And yes I am proud of this lego model 
To bad. You can get a cheap one for less then the cost of one fried Arduino.
You always could build your own LEGO multimeter!
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That's all it takes. So Vcc and GND got in contact with each other, or with I/O pins. Don't waste any more time on that ESP board...
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