Is my D1 mini fried?

  • I got two wemos D1 mini ESP8266. Initially both worked fine, I connected the USB and they are detected immediately and I flashed both a couple of times using Arduino IDE.

    I am not sure what I did exactly, but after an hour of playing around with them they are both completely unresponsive.

    If I connect the USB nothing is detected. If I connect the 3.3v and GND no LED blinks. If I leave it that way for a few mins it gets really hot.

    If I connect the D4 instead to GND the LED is constantly on.

    Have I managed to fry both of them? Is there anything I can do to attempt to recover them?

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