I was attempting to power a Teensy 3.2/Huzzah Feather combo from a breadboard power supply and now I'm worried that I've fried something. I was initially using the teensy to power the huzzah and a 10K pot and everything worked fine. Then I tried to connect the setup to a 3.2 volt breadboard power supply so I could untether from USB. I connected the 3.3V and GND pins on the Teensy and the 3V and GND pins on the Huzzah to the rail. Triple checked to make sure polarity was right. Turned on the power supply and nothing happened. Tried going back to the Teensy-powered setup and now that doesn't work either. So I unhooked everything and tried running sketches on both the Teensy and Huzzah individually and they worked fine. Can anyone suggest what might be up?