在 2015年3月6日星期五 UTC+8下午2:41:17，[email protected]写道： > > I wired up a circuit with an LED strip, 3 N-channel MOSFETs, and a > separate 12V power supply, with the gate pins on the MOSFETS connected to > I/O pins on the Beaglebone. > > When I didn't connect the circuit to the Bone ground, I apparently fried 2 > boards. Neither will boot up. One gives a flicker on the power light and > then goes off, and on the other the power light turns on, but the other > LEDs don't flash and I can't get into either board. > > Here is the thread on the Adafruit forum with a photo of the circuit: > http://forums.adafruit.com/viewtopic.php?f=8&t=69691&p=353330&sid=eff0f5bd69bba9338e6f0ec2d7fa70c4#p353330 > *The Adafruit support said that setup should not have hurt the board. * > > I checked the voltage on the gate pin on each MOSFET that was connected to > the Bone and it was nominal (~200mA). > > Does anyone have any ideas on this? How could this have fried 2 boards? > > Thanks for any help. > > And PS I posted this earlier today but didn't see it show up in the forum. > Sorry if it needed to be approved and you are getting a duplicate. >
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