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Trying to hook up an hazzah feather to a pca9685 scl sda connection and have a bno055 connected to that.The 5 volts to power the PCA is not taken from feather. I have a GPS module connected to pin 12 of feather again not powered from feather. Gps interface works fine. I see it though web page interface. Then I hook up the PCA. the wifi chip overheats and feather is fried

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    you talked about +5 V, but you said nothing about grounds – jsotola Jul 31 at 23:41
  • The grounds are the individual power supplies – James Sampiere Jul 31 at 23:53
  • that means nothing ... how are all of the grounds connected? – jsotola Aug 1 at 0:25

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