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Wemos D1 mini - accidentally shorted 3.3v and ground
Posted:
Sat Jul 08, 2017 3:08 pmby Mark Osvath
Hello All,
I accidentally shorted 3.3v and ground PINs. Windows detects the USB device if I plugin, but that's all. No life signs. I probably killed something but I don't know what. Any ideas?
Thanks in advance,
Mark
Re: Wemos D1 mini - accidentally shorted 3.3v and ground
Posted:
Mon Jul 10, 2017 9:04 amby martinayotte
Most probably, the RT9013-33 SOT-23-5 3.3V LDO regulator is now broken.
Re: Wemos D1 mini - accidentally shorted 3.3v and ground
Posted:
Mon Jul 10, 2017 10:11 amby btidey
Theoretically the regulator should be protected against that. There is a resettable fuse on some versions of the D1. I don't know what sort that is but if it is a polyfuse then these can take 1 to 2 days to recover. So I would leave it off for a couple of days and try again.
Re: Wemos D1 mini - accidentally shorted 3.3v and ground
Posted:
Mon Jul 10, 2017 10:12 amby Mark Osvath
I'll try to replace it. thank you very much.