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.
