Thanks very much for your response Harvey. Right sorry on the mA, I meant mV. Also I sent a picture of the circuit to the Adafruit customer support, it's in that forum thread that I linked to. And they said from looking at it, it shouldn't have been capable of frying the Bone.
I'm surprised I can't find anything similar to this issue. I will check out the regulators. On Thursday, March 5, 2015 at 10:41:17 PM UTC-8, gr...@sensa.io wrote: > > 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. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
